Overall Red Tropical Cyclone for SINLAKU-26 in Northern Mariana Islands, Guam from 09 Apr 2026 00:00 UTC to 19 Apr 2026 18:00 UTC

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Overall Red Tropical Cyclone for SINLAKU-26

in Northern Mariana Islands, Guam

Global Telecommunication Service

GTS (Global Telecommunication Service) is the official Warning and Alerting channel by the World Meteorological Organization (WMO) adopted by several Warning Organizations. As soon as a new GTS message regarding Tropical Cyclones(WT) or Tsunami(WE) the messages are processed and possibly assigned to the specific event. When a new GTS message is present an new tab in the specific event report page is present.The presence of a GTS message is shown in the homepage with a dedicated icon.

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Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

19/04 20:46 WTPN51PGTW192100

19/04 07:41 WTPN31PGTW190900

19/04 03:41 WTJP31RJTD190300

18/04 21:44 WTJP31RJTD182100

18/04 21:02 WTPQ31PGUM182100

18/04 15:45 WTJP31RJTD181500

18/04 15:03 WTPQ31PGUM181502CCA

18/04 15:02 WTPQ31PGUM181500

18/04 09:43 WTPQ31PGUM180942

18/04 09:43 WTJP31RJTD180900

18/04 03:41 WTJP31RJTD180300

18/04 03:08 WTPQ31PGUM180306

18/04 01:09 WTPQ31PGUM180108

17/04 21:43 WTJP31RJTD172100

17/04 21:15 WTPQ31PGUM172114

17/04 19:01 WTPQ31PGUM171859

17/04 16:01 WTPQ31PGUM171600

17/04 15:42 WTJP31RJTD171500

17/04 13:09 WTPQ31PGUM171307

17/04 09:51 WTPQ31PGUM170950

17/04 09:42 WTJP31RJTD170900

17/04 07:49 WTPQ31PGUM170747CCA

17/04 07:11 WTPQ31PGUM170710

17/04 04:06 WTPQ31PGUM170405

17/04 03:42 WTJP31RJTD170300

17/04 00:57 WTPQ31PGUM170055

16/04 21:41 WTJP31RJTD162100

16/04 21:28 WTPQ31PGUM162127

16/04 19:37 WTPQ30RJTD161800CCA

16/04 19:08 WTPQ31PGUM161907

16/04 16:01 WTPQ31PGUM161600

16/04 15:42 WTJP31RJTD161500

16/04 13:12 WTPQ31PGUM161311

16/04 09:41 WTJP31RJTD160900

16/04 09:10 WTPQ31PGUM160909

16/04 07:20 WTPQ31PGUM160718

16/04 04:00 WTPQ31PGUM160359

16/04 03:42 WTJP31RJTD160300

16/04 01:07 WTPQ31PGUM160105

15/04 21:42 WTJP31RJTD152100

15/04 21:24 WTPQ31PGUM152122

15/04 18:40 WTPQ31PGUM151839

15/04 15:56 WTPQ31PGUM151554

15/04 15:42 WTJP31RJTD151500

15/04 13:13 WTPQ31PGUM151312

15/04 09:47 WTPQ31PGUM150945

15/04 09:42 WTJP31RJTD150900

15/04 06:53 WTPQ31PGUM150652

15/04 03:49 WTPQ31PGUM150348CCA

15/04 03:44 WTPQ31PGUM150343

15/04 03:41 WTJP31RJTD150300

15/04 01:09 WTPQ31PGUM150108

15/04 00:43 WTJP21RJTD150000

14/04 21:38 WTJP31RJTD142100

14/04 21:11 WTPQ31PGUM142109

14/04 18:58 WTPQ31PGUM141856

14/04 18:40 WTJP21RJTD141800

14/04 15:48 WTJP31RJTD141500

14/04 15:15 WTPQ31PGUM141513

14/04 13:04 WTPQ31PGUM141303

14/04 12:42 WTJP21RJTD141200

14/04 10:18 WTPQ31PGUM141017CCA

14/04 10:02 WTPQ31PGUM141000

14/04 09:39 WTJP31RJTD140900

14/04 08:23 WTPN51PGTW140900

14/04 06:59 WTPQ31PGUM140657

14/04 06:41 WTJP21RJTD140600

14/04 04:07 WTPQ31PGUM140406

14/04 03:41 WTJP31RJTD140300

14/04 01:50 WTPN31PGTW140300

14/04 01:50 WTPN51PGTW140300

14/04 01:16 WTPQ31PGUM140114

14/04 00:44 WTJP21RJTD140000

13/04 22:19 WTPQ31PGUM132218

13/04 21:41 WTJP31RJTD132100

13/04 21:21 WTPQ31PGUM132119

13/04 19:29 WTPQ31PGUM131928CCA

13/04 19:13 WTPQ31PGUM131911

13/04 18:40 WTJP21RJTD131800

13/04 16:07 WTPQ31PGUM131605

13/04 15:48 WTPQ50RJTD131500

13/04 15:48 WTJP31RJTD131500

13/04 13:21 WTPQ30RJTD131200

13/04 13:10 WTPQ31PGUM131308

13/04 12:43 WTPQ50RJTD131200

13/04 12:42 WTJP21RJTD131200

13/04 10:02 WTPQ31PGUM131001

13/04 09:41 WTJP31RJTD130900

13/04 09:41 WTPQ50RJTD130900

13/04 08:12 WTPN51PGTW130900

13/04 07:10 WTPQ30RJTD130600

13/04 06:46 WTPQ31PGUM130645

13/04 06:43 WTPQ50RJTD130600

13/04 06:43 WTJP21RJTD130600

13/04 04:19 WTPQ31PGUM130418

13/04 03:37 WTJP31RJTD130300

13/04 03:37 WTPQ50RJTD130300

13/04 01:33 WTPN51PGTW130300

13/04 01:30 WTPQ30RJTD130000

13/04 00:49 WTPQ31PGUM130047

13/04 00:43 WTPQ50RJTD130000

13/04 00:42 WTJP21RJTD130000

12/04 21:42 WTPQ50RJTD122100

12/04 21:41 WTJP31RJTD122100

12/04 21:28 WTPQ31PGUM122126

12/04 19:40 WTPQ30RJTD121800

12/04 19:02 WTPQ31PGUM121900

12/04 18:43 WTJP21RJTD121800

12/04 18:43 WTPQ50RJTD121800

12/04 15:43 WTJP31RJTD121500

12/04 15:43 WTPQ50RJTD121500

12/04 15:19 WTPQ31PGUM121518

12/04 14:32 WTPN51PGTW121500

12/04 13:35 WTPQ30RJTD121200

12/04 12:43 WTPQ50RJTD121200

12/04 12:43 WTJP21RJTD121200

12/04 12:30 WTPQ31PGUM121229

12/04 09:42 WTJP31RJTD120900

12/04 09:42 WTPQ50RJTD120900

12/04 09:31 WTPQ31PGUM120930

12/04 08:22 WTPN51PGTW120900

12/04 08:21 WTPN31PGTW120900

12/04 07:18 WTPQ30RJTD120600

12/04 06:54 WTPQ31PGUM120652

12/04 06:50 WTPQ50RJTD120600

12/04 06:50 WTJP21RJTD120600

12/04 05:01 WTPQ31PGUM120500CCA

12/04 04:23 WTPQ31PGUM120421CCA

12/04 04:00 WTPQ31PGUM120358

12/04 03:39 WTJP31RJTD120300

12/04 03:39 WTPQ50RJTD120300

12/04 01:55 WTPN31PGTW120300

12/04 01:02 WTPQ31PGUM120101

12/04 00:45 WTJP21RJTD120000

11/04 21:42 WTJP31RJTD112100

11/04 21:20 WTPQ31PGUM112118

11/04 18:45 WTPQ31PGUM111843

11/04 15:42 WTJP31RJTD111500

11/04 15:11 WTPQ31PGUM111510

11/04 13:13 WTPQ31PGUM111312CCA

11/04 12:47 WTPQ31PGUM111246

11/04 09:42 WTPQ31PGUM110941

11/04 09:42 WTJP31RJTD110900

11/04 07:03 WTPQ31PGUM110701

11/04 03:41 WTJP31RJTD110300

11/04 03:12 WTPQ31PGUM110311

11/04 01:36 WTPQ31PGUM110135CCA

11/04 01:00 WTPQ31PGUM110059

10/04 21:43 WTJP31RJTD102100

10/04 21:39 WTPQ31PGUM102138

10/04 19:54 WTPN51PGTW102100

10/04 19:14 WTPQ31PGUM101913

10/04 15:41 WTJP31RJTD101500

10/04 15:22 WTPQ31PGUM101521

10/04 13:17 WTPQ31PGUM101316

10/04 12:43 WTJP21RJTD101200

10/04 09:43 WTJP31RJTD100900

10/04 09:38 WTPQ31PGUM100936

10/04 08:32 WTPN31PGTW100900

10/04 07:17 WTPQ31PGUM100716

10/04 06:43 WTJP21RJTD100600

10/04 05:32 WTPQ31PGUM100531CCA

10/04 03:44 WTPQ31PGUM100342

10/04 03:41 WTJP31RJTD100300

10/04 02:52 WTPN31PGTW100300

10/04 02:52 WTPN51PGTW100300

10/04 01:08 WTPQ31PGUM100107

10/04 00:46 WTJP21RJTD100000

09/04 21:47 WTJP31RJTD092100

09/04 21:47 WTPQ50RJTD092100

09/04 21:24 WTPQ31PGUM092123

09/04 20:58 WTPQ30RJTD091800

09/04 20:19 WTPN51PGTW092100

09/04 19:27 WTPQ50RJTD091800

09/04 19:26 WTJP21RJTD091800

09/04 19:05 WTPQ31PGUM091904

09/04 15:28 WTPQ31PGUM091527

09/04 13:46 WTPQ31PGUM091345

09/04 10:17 WTPQ31PGUM091015

09/04 07:32 WTPQ31PGUM090731CCA

09/04 07:08 WTPQ31PGUM090707

09/04 04:49 WTPQ31PGUM090447CCA

09/04 03:32 WTPQ31PGUM090330

Original Message :

WTPN51 PGTW 192100
WARNING ATCG MIL 04W NWP 260419195518
2026041918 04W SINLAKU 044 01 080 21 SATL 060
T000 287N 1561E 050 R050 000 NE QD 000 SE QD 000 SW QD 090 NW QD R034 200 NE QD 250 SE QD 230 SW QD 170 NW QD
T012 294N 1611E 050 R050 000 NE QD 000 SE QD 000 SW QD 080 NW QD R034 190 NE QD 220 SE QD 210 SW QD 160 NW QD
T024 295N 1661E 045 R034 180 NE QD 200 SE QD 180 SW QD 140 NW QD
AMP 000HR BECOMING EXTRATROPICAL
012HR EXTRATROPICAL
024HR EXTRATROPICAL
SUBJ: TROPICAL STORM 04W (SINLAKU) WARNING NR 044
1. TROPICAL STORM 04W (SINLAKU) WARNING NR 044
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
191800Z --- NEAR 28.7N 156.1E
MOVEMENT PAST SIX HOURS - 080 DEGREES AT 21 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 050 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
250 NM SOUTHEAST QUADRANT
230 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
REPEAT POSIT: 28.7N 156.1E
---
FORECASTS:
12 HRS, VALID AT:
200600Z --- 29.4N 161.1E
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
RADIUS OF 050 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
210 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 085 DEG/ 22 KTS
---
24 HRS, VALID AT:
201800Z --- 29.5N 166.1E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
140 NM NORTHWEST QUADRANT
---
REMARKS:
192100Z POSITION NEAR 28.9N 157.4E.
19APR26. TROPICAL STORM 04W (SINLAKU), LOCATED APPROXIMATELY 805
NM NORTHWEST OF WAKE ISLAND, HAS TRACKED EASTWARD AT 21 KNOTS
OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE
IMAGERY DEPICTS AN ELONGATED LOW-LEVEL CIRCULATION CENTER EXPOSED
IN ALL BUT THE NORTHEAST QUADRANTS. CONVECTIVE ACTIVITY IS EVIDENT
ALONG A DEVELOPING WARM FRONT EXTENDING EAST FROM THE LLCC, A
CERTAIN INDICATOR OF THE ONGOING EXTRATROPICAL TRANSITION PROCESS.
THE ENVIRONMENTAL CONDITIONS ARE HIGHLY UNFAVORABLE FOR TROPICAL
CYCLONE DEVELOPMENT, HOWEVER, THEY ARE CONDUCIVE TO SUSTAINING THE
EXTRTROPICAL LOW IN THE NEAR TERM (PRIMARILY DUE TO STRONG POLEWARD
OUTFLOW AND BAROCLINIC FORCING). 04W IS FORECAST TO CONTINUE ON
A RAPID EASTWARD TRAJECTORY AS IT COMPLETES EXTRATROPICAL
TRANSITION IN THE NEXT 12 HOURS, AND WILL MAINTAIN THAT TRAJECTORY
THROUGH THE END OF THE FORECAST PERIOD. THE GALE FORCE WIND FIELD
IS EXPECTED TO REMAIN BROAD THROUGHOUT THE FORECAST PERIOD, WITH
MAXIMUM SUSTAINED WINDS SLOWLY DECREASING TO 45 KTS BY TAU 24.
NUMERICAL MODEL GUIDANCE IS IN TIGHT AGREEMENT ABOUT THE STORM
TRACK, INTENSITY, AND EXTRATROPICAL TRANSITION SCENARIO.
THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON
WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED FOR
SIGNS OF REGENERATION. MINIMUM CENTRAL PRESSURE AT 191800Z IS 986
MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 191800Z IS 30 FEET.//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 81N1513E 65
0426041018 81N1513E 65
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041306 127N1480E 150
0426041306 127N1480E 150
0426041306 127N1480E 150
0426041312 131N1474E 150
0426041312 131N1474E 150
0426041312 131N1474E 150
0426041318 137N1470E 145
0426041318 137N1470E 145
0426041318 137N1470E 145
0426041400 143N1465E 135
0426041400 143N1465E 135
0426041400 143N1465E 135
0426041406 146N1460E 130
0426041406 146N1460E 130
0426041406 146N1460E 130
0426041412 149N1458E 125
0426041412 149N1458E 125
0426041412 149N1458E 125
0426041418 152N1455E 115
0426041418 152N1455E 115
0426041418 152N1455E 115
0426041500 156N1452E 110
0426041500 156N1452E 110
0426041500 156N1452E 110
0426041506 160N1449E 110
0426041506 160N1449E 110
0426041506 160N1449E 110
0426041512 162N1446E 110
0426041512 162N1446E 110
0426041512 162N1446E 110
0426041518 167N1444E 105
0426041518 167N1444E 105
0426041518 167N1444E 105
0426041600 171N1444E 100
0426041600 171N1444E 100
0426041600 171N1444E 100
0426041606 177N1445E 100
0426041606 177N1445E 100
0426041606 177N1445E 100
0426041612 184N1448E 90
0426041612 184N1448E 90
0426041612 184N1448E 90
0426041618 190N1450E 85
0426041618 190N1450E 85
0426041618 190N1450E 85
0426041700 195N1453E 80
0426041700 195N1453E 80
0426041700 195N1453E 80
0426041706 201N1457E 80
0426041706 201N1457E 80
0426041706 201N1457E 80
0426041712 208N1460E 75
0426041712 208N1460E 75
0426041712 208N1460E 75
0426041718 215N1462E 70
0426041718 215N1462E 70
0426041718 215N1462E 70
0426041800 222N1464E 65
0426041800 222N1464E 65
0426041800 222N1464E 65
0426041806 233N1468E 65
0426041806 233N1468E 65
0426041806 233N1468E 65
0426041812 243N1474E 60
0426041812 243N1474E 60
0426041818 254N1483E 55
0426041818 254N1483E 55
0426041900 265N1495E 55
0426041900 265N1495E 55
0426041906 276N1514E 55
0426041906 276N1514E 55
0426041912 283N1537E 55
0426041912 283N1537E 55
0426041918 287N1561E 50
0426041918 287N1561E 50
NNNN

Original Message :

WTPN31 PGTW 190900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 04W (SINLAKU) WARNING NR 042//
RMKS/
1. TROPICAL STORM 04W (SINLAKU) WARNING NR 042
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
190600Z --- NEAR 27.6N 151.4E
MOVEMENT PAST SIX HOURS - 055 DEGREES AT 20 KTS
POSITION ACCURATE TO WITHIN 040 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 050 KT WINDS - 000 NM NORTHEAST QUADRANT
120 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
260 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
REPEAT POSIT: 27.6N 151.4E
---
FORECASTS:
12 HRS, VALID AT:
191800Z --- 29.3N 156.0E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
230 NM SOUTHEAST QUADRANT
210 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 075 DEG/ 23 KTS
---
24 HRS, VALID AT:
200600Z --- 30.2N 161.2E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
230 NM SOUTHEAST QUADRANT
210 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
---
REMARKS:
190900Z POSITION NEAR 28.0N 152.6E.
19APR26. TROPICAL STORM 04W (SINLAKU), LOCATED APPROXIMATELY 248
NM NORTHWEST OF MINAMI TORI SHIMA, HAS TRACKED NORTHEASTWARD AT
20 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 190600Z
IS 984 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 190600Z IS 30 FEET. NEXT
WARNINGS AT 191500Z, 192100Z AND 200300Z.//
NNNN

Original Message :

WTJP31 RJTD 190300
WARNING 190300.
WARNING VALID 200300.
STORM WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) 980 HPA
AT 26.9N 150.2E SEA AROUND OF MINAMITORISIMA MOVING NORTHEAST 17
KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 300 MILES SOUTHEAST SEMICIRCLE AND 180
MILES ELSEWHERE.
FORECAST POSITION FOR 191500UTC AT 28.5N 154.1E WITH 30 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 45 KNOTS NEAR CENTER.
FORECAST POSITION FOR 200300UTC AT 29.2N 158.4E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
990 HPA, MAX WINDS 40 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP31 RJTD 182100
WARNING 182100.
WARNING VALID 192100.
STORM WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) 980 HPA
AT 25.6N 148.9E SEA AROUND OF MINAMITORISIMA MOVING NORTHEAST 16
KNOTS.
POSITION FAIR.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 300 MILES EAST SEMICIRCLE AND 180 MILES
ELSEWHERE.
FORECAST POSITION FOR 190900UTC AT 27.9N 152.0E WITH 25 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
980 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 192100UTC AT 28.9N 156.1E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 45 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 182100
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 40
National Weather Service Tiyan GU WP042026
700 AM ChST Sun Apr 19 2026

...TROPICAL STORM SINLAKU MOVING NORTHEAST NOW OUTSIDE OF THE
REGION...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...25.3N 148.5E

About 315 miles west-northwest of Minamitorishima
About 495 miles east of Iwo To
About 770 miles north-northeast of Saipan
About 780 miles north-northeast of Tinian
About 840 miles north-northeast of Rota
About 895 miles north-northeast of Guam

Maximum sustained winds...65 mph
Present movement...northeast...45 degrees at 16 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 25.3 degrees North and Longitude
148.5 degrees East. Sinlaku is moving northeast at 16 mph. It is
expected to make a slight turn toward the east-northeast with an
increase in forward speed through Monday. Tropical Sinlaku has exited
our region, allowing this to be the last advisory. Residual marine
impacts will continue for the Marianas for the next day or two.

Maximum sustained winds have decreased to 65 mph. Sinlaku is
forecast to weaken through tonight.

Tropical storm force winds extend outward from the center up to
255 miles to the east and up to 205 miles to the west.

NEXT ADVISORY
-------------
This will be the last advisory issued by the National Weather
Service on Sinlaku.

$$

Williams

Original Message :

WTJP31 RJTD 181500
WARNING 181500.
WARNING VALID 191500.
STORM WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) 975 HPA
AT 24.6N 147.5E OGASAWARA SHOTO MOVING NORTHNORTHEAST 10 KNOTS.
POSITION FAIR.
MAX WINDS 55 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 80 MILES EAST SEMICIRCLE AND 40 MILES
ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 300 MILES EAST SEMICIRCLE AND 180 MILES
ELSEWHERE.
FORECAST POSITION FOR 190300UTC AT 26.7N 149.9E WITH 25 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
980 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
FORECAST POSITION FOR 191500UTC AT 28.3N 153.8E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
980 HPA, MAX WINDS 50 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 181502 CCA
TCPPQ1

BULLETIN...CORRECTED
Tropical Storm Sinlaku (04W) Advisory Number 39
National Weather Service Tiyan GU WP042026
102 AM ChST Sun Apr 19 2026

Corrected to update headline.

...SINLAKU CONTINUES TO MOVE NORTHEAST AS IT EXITS THE REGION...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...24.9N 148.1E

About 450 miles north-northeast of Agrihan
About 490 miles north-northeast of Pagan
About 525 miles north-northeast of Alamagan
About 690 miles north-northeast of Saipan
About 700 miles north-northeast of Tinian
About 765 miles north-northeast of Rota
About 815 miles north-northeast of Guam

Maximum sustained winds...70 mph
Present movement...north-northeast...30 degrees at 14 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Tropical Storm Sinlaku was
located near Latitude 24.9 degrees North and Longitude 148.1 degrees
East. Sinlaku is moving north-northeast at 14 mph. It is expected to
make a turn toward the east-northeast with an increase in forward
speed today. Sinlaku is well north of the Marianas and is expected to
exit the region, moving north of 25N before the next advisory at 8
AM.

Maximum sustained winds remain at 70 mph. Sinlaku is forecast to
weaken through Sunday.

Tropical storm force winds extend outward from the center up to
270 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST.

$$

Original Message :

WTPQ31 PGUM 181500
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 39
National Weather Service Tiyan GU WP042026
100 AM ChST Sun Apr 19 2026

...SINLAKU DOWNGRADED TO TROPICAL STORM...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...24.9N 148.1E

About 450 miles north-northeast of Agrihan
About 490 miles north-northeast of Pagan
About 525 miles north-northeast of Alamagan
About 690 miles north-northeast of Saipan
About 700 miles north-northeast of Tinian
About 765 miles north-northeast of Rota
About 815 miles north-northeast of Guam

Maximum sustained winds...70 mph
Present movement...north-northeast...30 degrees at 14 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Tropical Storm Sinlaku was
located near Latitude 24.9 degrees North and Longitude 148.1 degrees
East. Sinlaku is moving north-northeast at 14 mph. It is expected to
make a turn toward the east-northeast with an increase in forward
speed today. Sinlaku is well north of the Marianas and is expected to
exit the region, moving north of 25N before the next advisory at 8
AM.

Maximum sustained winds remain at 70 mph. Sinlaku is forecast to
weaken through Sunday.

Tropical storm force winds extend outward from the center up to
270 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST.

$$

Original Message :

WTPQ31 PGUM 180942
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 38
National Weather Service Tiyan GU WP042026
742 PM ChST Sat Apr 18 2026

...SINLAKU DOWNGRADED TO TROPICAL STORM...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...23.9N 147.2E

About 370 miles north-northeast of Agrihan
About 410 miles north-northeast of Pagan
About 445 miles north of Alamagan
About 615 miles north of Saipan
About 625 miles north of Tinian
About 685 miles north of Rota
About 735 miles north of Guam

Maximum sustained winds...70 mph
Present movement...north-northeast...20 degrees at 14 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 23.9 degrees North and Longitude 147.2
degrees East. Sinlaku is moving north-northeast at 14 mph. It is
expected to make a slight turn toward the northeast with an
increase in forward speed through Sunday. Sinlaku is well north of
the Marianas and is expected to exit the region, moving north of
25N after midnight.

Maximum sustained winds have decreased to 70 mph. Sinlaku is
forecast to weaken through Sunday.

Tropical storm force winds extend outward from the center up to
270 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Sunday morning.

$$

Cruz

Original Message :

WTJP31 RJTD 180900
WARNING 180900.
WARNING VALID 190900.
STORM WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) 975 HPA
AT 23.7N 147.0E OGASAWARA SHOTO MOVING NORTHNORTHEAST 10 KNOTS.
POSITION FAIR.
MAX WINDS 55 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 100 MILES SOUTHEAST SEMICIRCLE AND 80
MILES ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 375 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 182100UTC AT 25.8N 148.7E WITH 25 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 55 KNOTS NEAR CENTER.
FORECAST POSITION FOR 190900UTC AT 27.7N 151.8E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 55 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP31 RJTD 180300
WARNING 180300.
WARNING VALID 190300.
STORM WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) 970 HPA
AT 22.7N 146.5E OGASAWARA SHOTO MOVING NORTH 08 KNOTS.
POSITION FAIR.
MAX WINDS 60 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 100 MILES SOUTHEAST SEMICIRCLE AND 80
MILES ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 375 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 181500UTC AT 24.8N 148.0E WITH 25 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 190300UTC AT 26.9N 150.2E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 180306
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 37
National Weather Service Tiyan GU WP042026
106 PM ChST Sat Apr 18 2026

...TYPHOON SINLAKU MOVING NORTH AWAY FROM THE FAR NORTHERN
MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
None.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...22.8N 146.7E

About 285 miles north-northeast of Agrihan
About 330 miles north of Pagan
About 365 miles north of Alamagan
About 535 miles north of Saipan
About 545 miles north of Tinian
About 605 miles north of Rota
About 655 miles north of Guam

Maximum sustained winds...75 mph
Present movement...north...5 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 22.8 degrees North and Longitude 146.7
degrees East. Sinlaku is moving north at 10 mph. It is expected to
make a turn toward the northeast with an increase in forward
speed through Sunday. Although Sinlaku has continued to weaken and
move away from the far northern Marianas, and sustained tropical
storm force winds have ended at Agrihan, tropical storm force
gusts will remain possible near any showers at Agrihan through
this evening.

Maximum sustained winds have decreased to 75 mph. Sinlaku is
forecast to weaken through tonight.

Typhoon force winds extend outward from the center up to
80 miles. Tropical storm force winds extend outward from the
center up to 270 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 800 PM ChST tonight.

$$

DeCou

Original Message :

WTPQ31 PGUM 180108
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 36A
National Weather Service Tiyan GU WP042026
1108 AM ChST Sat Apr 18 2026

...TYPHOON SINLAKU MOVING NORTHEAST AWAY FROM THE FAR NORTHERN
MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
The Typhoon Warning for Agrihan in the CNMI and adjacent coastal
waters is cancelled.

WATCHES AND WARNINGS
--------------------
The Typhoon Warning for Agrihan in the CNMI and adjacent coastal
waters is cancelled.

SUMMARY OF 1100 AM CHST...0100 UTC...INFORMATION
-----------------------------------------------
Location...22.3N 146.4E

About 250 miles north of Agrihan
About 290 miles north of Pagan
About 325 miles north of Alamagan
About 495 miles north of Saipan
About 505 miles north of Tinian
About 565 miles north of Rota
About 620 miles north of Guam

Maximum sustained winds...80 mph
Present movement...northeast...35 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM CHST...0100 UTC...the center of Typhoon Sinlaku was
located near Latitude 22.3 degrees North and Longitude 146.4
degrees East. Sinlaku is moving northeast at 7 mph. It is expected
to maintain this general course with an increase in forward speed
through Sunday. Sinlaku has continued to weaken and move away from
the far northern Marianas, and sustained tropical storm force
winds have ended at Agrihan. Tropical storm force gusts will
remain possible near any showers at Agrihan through this evening.

Maximum sustained winds remain at 80 mph. Sinlaku is forecast to
weaken through tonight.

Typhoon force winds extend outward from the center up to
70 miles. Tropical storm force winds extend outward from the
center up to 270 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST this afternoon followed by an
intermediate advisory at 500 PM ChST.

$$

DeCou

Original Message :

WTJP31 RJTD 172100
WARNING 172100.
WARNING VALID 182100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 970 HPA
AT 21.6N 146.6E OGASAWARA SHOTO MOVING NORTHNORTHEAST 06 KNOTS.
POSITION GOOD.
MAX WINDS 65 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 182100UTC AT 25.9N 149.1E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 172114
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 36
National Weather Service Tiyan GU WP042026
714 AM ChST Sat Apr 18 2026

...TYPHOON SINLAKU MOVING NORTHEAST AWAY FROM THE FAR NORTHERN
MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Agrihan in the CNMI and
the adjacent coastal waters.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...21.8N 146.7E

About 220 miles north-northeast of Agrihan
About 260 miles north-northeast of Pagan
About 295 miles north of Alamagan
About 465 miles north of Saipan
About 475 miles north of Tinian
About 535 miles north of Rota
About 590 miles north-northeast of Guam

Maximum sustained winds...80 mph
Present movement...northeast...35 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Typhoon Sinlaku was
located near Latitude 21.8 degrees North and Longitude
146.7 degrees East. Sinlaku is moving northeast at 7 mph. It is
expected to maintain this general course with an increase in
forward speed through Sunday. The latest forecast track and
intensity, and overnight satellite scatterometry keep Agrihan on the
very outer edge of tropical storm conditions, but a combination of
Sinlaku weakening and moving away should allow for sustained winds of
39 mph or greater to end within the next hour or two.

Maximum sustained winds have decreased to 80 mph. Sinlaku is
forecast to weaken through tonight.

Typhoon force winds extend outward from the center up to
70 miles. Tropical storm force winds extend outward from the
center up to 270 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST followed by the next scheduled advisory
at 200 PM ChST.

$$

DeCou

Original Message :

WTPQ31 PGUM 171859
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 35A
National Weather Service Tiyan GU WP042026
459 AM ChST Sat Apr 18 2026

...TYPHOON SINLAKU MOVING NORTHEAST AWAY FROM THE FAR
NORTHERN MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Agrihan in the CNMI and the
adjacent coastal waters.

SUMMARY OF 400 AM CHST...1800 UTC...INFORMATION
-----------------------------------------------
Location...21.3N 146.5E

About 185 miles north-northeast of Agrihan
About 225 miles north-northeast of Pagan
About 260 miles north of Alamagan
About 430 miles north of Saipan
About 440 miles north of Tinian
About 500 miles north of Rota
About 550 miles north of Guam

Maximum sustained winds...90 mph
Present movement...north-northeast...25 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 400 AM CHST...1800 UTC...the center of Typhoon Sinlaku was
located near Latitude 21.3 degrees North and Longitude
146.5 degrees East. Sinlaku is moving north-northeast at 10 mph.
It is expected to maintain this general course with a slight
increase in forward speed through Sunday. Tropical storm conditions
continue at Agrihan, but a combination of Sinlaku weakening and
moving away should allow for tropical storm conditions to end within
the next few hours.

Maximum sustained winds remain at 90 mph. Sinlaku is forecast to
weaken through tonight.

Typhoon force winds extend outward from the center up to
80 miles. Tropical storm force winds extend outward from the
center up to 270 miles to the northeast and northwest, and up to 235
miles elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST followed by an intermediate
advisory at 1100 AM ChST.

$$

Williams

Original Message :

WTPQ31 PGUM 171600
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 35
National Weather Service Tiyan GU WP042026
200 AM ChST Sat Apr 18 2026

...TYPHOON SINLAKU MOVING NORTHEAST AWAY FROM THE FAR NORTHERN
MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
The Typhoon Warnings for Alamagan, Pagan and adjacent coastal waters
are cancelled.

WATCHES AND WARNINGS
--------------------
The Typhoon Warnings for Alamagan, Pagan and adjacent coastal waters
are cancelled.

A Typhoon Warning remains in effect for Agrihan in the CNMI and the
adjacent coastal waters.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...21.2N 146.4E

About 175 miles north-northeast of Agrihan
About 215 miles north of Pagan
About 250 miles north of Alamagan
About 420 miles north of Saipan
About 430 miles north of Tinian
About 490 miles north of Rota
About 545 miles north of Guam

Maximum sustained winds...90 mph
Present movement...north-northeast...25 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Typhoon Sinlaku was
located near Latitude 21.2 degrees North and Longitude
146.4 degrees East. Sinlaku is moving north-northeast at 10 mph.
It is expected to maintain this general course with a slight
increase in forward speed through Sunday. Tropical storm force winds
have shifted north of Alamagan and Pagan, but remain over Agrihan.
Tropical storm conditions look to persist over Agrihan through at
least 6 AM this morning.

Maximum sustained winds remain at 90 mph. Sinlaku is forecast to
weaken through Sunday.

Typhoon force winds extend outward from the center up to
80 miles. Tropical storm force winds extend outward from the
center up to 270 miles to the northeast and northwest, and up to 235
miles elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST followed by the next scheduled advisory at
800 AM ChST.

$$

Williams

Original Message :

WTJP31 RJTD 171500
WARNING 171500.
WARNING VALID 181500.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 965 HPA
AT 21.1N 146.3E OGASAWARA SHOTO MOVING NORTHNORTHEAST 08 KNOTS.
POSITION GOOD.
MAX WINDS 70 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 181500UTC AT 24.9N 148.0E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 171307
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 34A
National Weather Service Tiyan GU WP042026
1107 PM ChST Fri Apr 17 2026

...TYPHOON SINLAKU MOVING NORTHEAST AND PASSING THROUGH THE FAR
NORTHERN MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan in the CNMI and the adjacent coastal waters.

SUMMARY OF 1000 PM CHST...1200 UTC...INFORMATION
-----------------------------------------------
Location...20.8N 146.2E

About 145 miles north-northeast of Agrihan
About 185 miles north of Pagan
About 220 miles north of Alamagan
About 395 miles north of Saipan
About 405 miles north of Tinian
About 460 miles north of Rota
About 515 miles north of Guam

Maximum sustained winds...90 mph
Present movement...northeast...45 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CHST...1200 UTC...the center of Typhoon Sinlaku was
located near Latitude 20.8 degrees North and Longitude 146.2 degrees
East. Sinlaku is moving northeast at 8 mph. It is expected to make a
slight turn toward the north-northeast with a slight increase in
forward speed through Saturday. Tropical storm force winds continue
at Alamagan and Pagan through late tonight or early Saturday morning
and through Saturday morning at Agrihan

Maximum sustained winds remain at 90 mph. Sinlaku is forecast to
weaken through Saturday.

Typhoon force winds extend outward from the center up to
85 miles. Tropical storm force winds extend outward from the
center up to 270 miles to the northeast and up to 235 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Saturday morning followed by
an intermediate advisory at 500 AM ChST.

$$

Williams

Original Message :

WTPQ31 PGUM 170950
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 34
National Weather Service Tiyan GU WP042026
750 PM ChST Fri Apr 17 2026

...TYPHOON SINLAKU MOVING NORTHEAST AND PASSING THROUGH THE FAR
NORTHERN MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan in the CNMI and the adjacent coastal waters.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...20.3N 145.9E

About 110 miles north of Agrihan
About 150 miles north of Pagan
About 185 miles north of Alamagan
About 360 miles north of Saipan
About 365 miles north of Tinian
About 425 miles north of Rota
About 475 miles north of Guam

Maximum sustained winds...90 mph
Present movement...northeast...45 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Typhoon Sinlaku was
located near Latitude 20.3 degrees North and Longitude 145.9
degrees East. Sinlaku is moving northeast at 8 mph. It is expected
to make a slight turn toward the north-northeast with a slight
increase in forward speed through Saturday. Tropical storm force
winds continue at Alamagan and Pagan through late tonight or early
Saturday morning and through Saturday morning at Agrihan.

Maximum sustained winds remain at 90 mph. Sinlaku is forecast to
weaken over the next couple of days, possibly becoming
extratropical Sunday.

Typhoon force winds extend outward from the center up to
85 miles. Tropical storm force winds extend outward from the
center up to 270 miles to the northeast and up to 235 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM tonight followed by the next scheduled advisory
at 200 AM early Saturday morning.

$$

IC

Original Message :

WTJP31 RJTD 170900
WARNING 170900.
WARNING VALID 180900.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 965 HPA
AT 20.3N 146.0E OGASAWARA SHOTO MOVING NORTHEAST 08 KNOTS.
POSITION GOOD.
MAX WINDS 70 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 180900UTC AT 23.8N 147.3E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 170747 CCA
TCPPQ1

BULLETIN...CORRECTED
Typhoon Sinlaku (04W) Intermediate Advisory Number 33A
National Weather Service Tiyan GU WP042026
547 PM ChST Fri Apr 17 2026

Correct Discussion and Outlook.

...TYPHOON SINLAKU MOVING NORTHEAST AND PASSING THROUGH THE FAR
NORTHERN MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan in the CNMI and the adjacent coastal waters.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...20.0N 145.8E

About 95 miles north of Agrihan
About 135 miles north of Pagan
About 170 miles north of Alamagan
About 345 miles north of Saipan
About 355 miles north of Tinian
About 410 miles north of Rota
About 460 miles north of Guam

Maximum sustained winds...90 mph
Present movement...northeast...35 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Typhoon Sinlaku was
located near Latitude 20.0 degrees North and Longitude 145.8 degrees
East. Sinlaku is moving northeast at 7 mph. It is expected to make a
slight turn toward the north-northeast with a slight increase in
forward speed through Saturday. Typhoon force winds have moved north
of Agrihan, although tropical storm force conditions remain through
Saturday morning. Alamagan is expected to see tropical storm force
conditions through late this evening or overnight. Pagan is
expected to see tropical storm force conditions through tonight or
early Saturday morning.

Maximum sustained winds remain at 90 mph. Sinlaku is forecast to
continue to weaken over the next couple of days, possibly becoming
extratropical Sunday.

Typhoon force winds extend outward from the center up to
85 miles. Tropical storm force winds extend outward from the
center up to 270 miles to the northeast and up to 235 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 PM ChST this evening followed by an
intermediate advisory at 1100 PM ChST tonight.

$$

Cruz

Original Message :

WTPQ31 PGUM 170710
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 33A
National Weather Service Tiyan GU WP042026
510 PM ChST Fri Apr 17 2026

...TYPHOON SINLAKU MOVING NORTHEAST AND PASSING THROUGH THE FAR
NORTHERN MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan in the CNMI and the adjacent coastal waters.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...20.0N 145.8E

About 95 miles north of Agrihan
About 135 miles north of Pagan
About 170 miles north of Alamagan
About 345 miles north of Saipan
About 355 miles north of Tinian
About 410 miles north of Rota
About 460 miles north of Guam

Maximum sustained winds...90 mph
Present movement...northeast...35 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Typhoon Sinlaku was
located near Latitude 20.0 degrees North and Longitude 145.8
degrees East. Sinlaku is moving northeast at 7 mph. It is expected
to make a slight turn toward the north- northeast with a slight
increase in forward speed through Saturday. Typhoon force winds
have moved north of Agrihan, although tropical storm force
conditions remain through Saturday morning. Alamagan and Pagan are
expected to see tropical storm force conditions overnight into
Saturday morning. Alamagan is expected to see tropical storm force
conditions through late this evening or overnight and Pagan is
expected to see tropical storm force conditions overnight or early
Saturday morning.

Maximum sustained winds remain at 90 mph. Sinlaku is forecast to
continue to weaken over the next couple of days, possibly becoming
extratropical Sunday.

Typhoon force winds extend outward from the center up to
85 miles. Tropical storm force winds extend outward from the
center up to 270 miles to the northeast and up to 235 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 PM ChST this evening followed by an
intermediate advisory at 1100 PM ChST tonight.

$$

Cruz

Original Message :

WTPQ31 PGUM 170405
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 33
National Weather Service Tiyan GU WP042026
205 PM ChST Fri Apr 17 2026

...TYPHOON SINLAKU MOVING NORTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan in the CNMI and the adjacent coastal waters.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...19.8N 145.6E

About 75 miles north of Agrihan
About 115 miles north of Pagan
About 150 miles north of Alamagan
About 325 miles north of Saipan
About 330 miles north of Tinian
About 390 miles north of Rota
About 440 miles north of Guam

Maximum sustained winds...90 mph
Present movement...northeast...35 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------

At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 19.8 degrees North and Longitude
145.6 degrees East. Sinlaku is moving northeast at 7 mph. It is
expected to make a slight turn toward the north-northeast with a
slight increase in forward speed through Saturday. Agrihan
continues to be under typhoon force conditions through this
afternoon or evening, then tropical storm force conditions
through Saturday morning. Alamagan and Pagan are expected to see
tropical storm force conditions overnight into Saturday morning.

Maximum sustained winds have decreased to 90 mph. Sinlaku is
forecast to weaken through the weekend, possibly becoming
extratropical sometime Sunday.

Typhoon force winds extend outward from the center up to
85 miles. Tropical storm force winds extend outward from the
center up to 270 miles to the northeast and up to 235 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST this afternoon followed by the next
scheduled advisory at 800 PM ChST this evening.

$$

Cruz

Original Message :

WTJP31 RJTD 170300
WARNING 170300.
WARNING VALID 180300.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 960 HPA
AT 19.7N 145.5E MARIANAS MOVING NORTHEAST SLOWLY.
POSITION GOOD.
MAX WINDS 75 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 180300UTC AT 22.6N 146.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 170055
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 32A
National Weather Service Tiyan GU WP042026
1055 AM ChST Fri Apr 17 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Alamagan, Pagan, and Agrihan
in the CNMI and the adjacent coastal waters.

SUMMARY OF 1000 AM CHST...0000 UTC...INFORMATION
-----------------------------------------------
Location...19.5N 145.4E

About 55 miles north-northwest of Agrihan
About 100 miles north-northwest of Pagan
About 135 miles north-northwest of Alamagan
About 305 miles north of Saipan
About 310 miles north of Tinian
About 370 miles north of Rota
About 415 miles north of Guam

Maximum sustained winds...100 mph
Present movement...north-northeast...15 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 AM CHST...0000 UTC...the center of Typhoon Sinlaku was
located near Latitude 19.5 degrees North and Longitude 145.4 degrees
East. Sinlaku is moving north-northeast at 7 mph. It is expected to
turn toward the northeast with an increase in forward speed through
Sunday.

Maximum sustained winds remain at 100 mph. Sinlaku is forecast to
weaken through the weekend, possibly becoming extratropical sometime
Sunday.

Typhoon force winds extend outward from the center up to 85 miles.
Tropical storm force winds extend outward from the center up to 270
miles to the northeast and up to 235 miles elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 200 PM ChST followed by an intermediate advisory at
500 PM ChST.

$$

Kleeschulte

Original Message :

WTJP31 RJTD 162100
WARNING 162100.
WARNING VALID 172100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 960 HPA
AT 19.3N 145.2E MARIANAS MOVING NORTHNORTHEAST 07 KNOTS.
POSITION GOOD.
MAX WINDS 75 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 172100UTC AT 21.8N 146.3E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 162127
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 32
National Weather Service Tiyan GU WP042026
727 AM ChST Fri Apr 17 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHEAST THROUGH THE NORTHERN CNMI...

CHANGES WITH THIS ADVISORY
--------------------------
The Typhoon Warnings for Tinian, Saipan and adjacent coastal waters
are cancelled.

WATCHES AND WARNINGS
--------------------
The Typhoon Warnings for Tinian, Saipan and adjacent coastal waters
are cancelled.

A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan in the CNMI and the adjacent coastal waters.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...19.3N 145.2E

About 50 miles northwest of Agrihan
About 90 miles north-northwest of Pagan
About 125 miles north-northwest of Alamagan
About 290 miles north of Saipan
About 300 miles north of Tinian
About 355 miles north of Rota
About 405 miles north of Guam

Maximum sustained winds...100 mph
Present movement...north-northeast...15 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Typhoon Sinlaku was
located near Latitude 19.3 degrees North and Longitude 145.2 degrees
East. Sinlaku is moving north-northeast at 7 mph. It is expected to
maintain this general course with a slight increase in forward speed
through Saturday.

Maximum sustained winds have decreased to 100 mph. Sinlaku is
forecast to weaken over the next couple of days, possibly becoming
extratropical Sunday morning.

Typhoon force winds extend outward from the center up to 85 miles.
Tropical storm force winds extend outward from the center up to 270
miles to the northeast and up to 235 miles elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST followed by the next scheduled advisory
at 200 PM ChST.

$$

Kleeschulte

Original Message :

WTPQ30 RJTD 161800 CCA
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.34 FOR TY 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TY SINLAKU IS LOCATED AT 19.1N, 145.0E. INFORMATION ON THE CURRENT
POSITION IS BASED ON THE EYE IN ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS GOOD. CENTRAL PRESSURE IS
960HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 75KNOTS.
THE SYSTEM IS IN A NEUTRAL ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF WEAK VWS, LOWER SSTS AND REDUCED TCHP. HOWEVER, THE
INSUFFICIENT ENVIRONMENT FOR MAINTENANCE OF ITS INTENSITY HAS
CAUSED IT TO WEAKEN OVER THE LAST SIX HOURS. INFORMATION ON THE
CURRENT INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND
SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTH-NORTHEASTWARD ALONG THE WESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
EYE HAS BECOME OBSCURE. ANIMATED MSI SHOWS GOOD CLOUD
CHARACTERISTICS OF ANTICYCLONIC OUTFLOW. WATER VAPOR IMAGERY SHOWS
DRY AIR IN THE DIRECTION OF THE MOVEMENT. METOP-C/MHS 85 GHZ
MICROWAVE IMAGERY SHOWS THE SYSTEM HAS AN EYE.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTH-NORTHEASTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT60. THE SYSTEM WILL THEN
GRADUALLY ACCELERATE AND MOVE EASTWARD UNDER THE INFLUENCE OF
MID-LATITUDE PREVAILING WESTERLIES UNTIL FT96. THE TRACK FORECAST
IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS.
TRACK FORECAST CONFIDENCE IS FAIR BECAUSE ALL NWP MODELS ARE IN
CLOSE AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL GRADUALLY WEAKEN UNTIL FT96 DUE TO THE INFLUENCE
OF INTERACTION WITH LOW SSTS, LOW TCHP AND INCREASED VWS. THE
SYSTEM WILL TRANSFORM INTO AN EXTRATROPICAL CYCLONE BY FT96. THE
INTENSITY FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA
INCLUDING GSM.
=

Original Message :

WTPQ31 PGUM 161907
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 31A
National Weather Service Tiyan GU WP042026
507 AM ChST Fri Apr 17 2026

...TYPHOON SINLAKU CONTINUES NORTH-NORTHEAST THROUGH THE NORTHERN
CNMI NORTHWEST OF AGRIHAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for
Tinian, Saipan, Alamagan, Pagan, and Agrihan in the CNMI and the
adjacent coastal waters.

SUMMARY OF 400 AM CHST...1800 UTC...INFORMATION
-----------------------------------------------
Location...19.0N 145.0E

About 45 miles west-northwest of Agrihan
About 80 miles northwest of Pagan
About 110 miles north-northwest of Alamagan
About 270 miles north of Saipan
About 280 miles north of Tinian
About 335 miles north of Rota
About 380 miles north of Guam

Maximum sustained winds...105 mph
Present movement...north-northeast...20 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 400 AM CHST...1800 UTC...the center of Typhoon Sinlaku was
located near Latitude 19.0 degrees North and Longitude
145.0 degrees East. Sinlaku is moving north-northeast at 9 mph.
It is expected to maintain this general course and speed through
Saturday. Typhoon Sinlaku will pass north of Agrihan this afternoon.

Maximum sustained winds remain at 105 mph. Sinlaku is forecast to
weaken through tonight.

Typhoon force winds extend outward from the center up to
90 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST early Saturday morning followed by
an intermediate advisory at 1100 AM ChST.

$$

Williams

Original Message :

WTPQ31 PGUM 161600
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 31
National Weather Service Tiyan GU WP042026
200 AM ChST Fri Apr 17 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHEAST THROUGH THE NORTHERN CNMI
TO THE WEST OF AGRIHAN...

CHANGES WITH THIS ADVISORY
--------------------------
The Typhoon Warning has been cancelled for coastal waters and the
island of Rota.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning is no longer in effect for the island and the
coastal waters of Rota.
A Typhoon Warning remains in effect for Tinian, Saipan,
Alamagan, Pagan, and Agrihan in the CNMI and the adjacent coastal
waters.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...18.7N 144.9E

About 50 miles west of Agrihan
About 70 miles northwest of Pagan
About 95 miles northwest of Alamagan
About 255 miles north-northwest of Saipan
About 260 miles north of Tinian
About 315 miles north of Rota
About 360 miles north of Guam

Maximum sustained winds...105 mph
Present movement...north-northeast...20 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Typhoon Sinlaku was
located near Latitude 18.7 degrees North and Longitude 144.9 degrees
East. Sinlaku is moving north-northeast at 9 mph. It is expected to
maintain this general course and speed through Saturday. Typhoon
Sinlaku continues to move through the northern CNMI just west of
Agrihan, turning more to the northeast as it passes north of Agrihan
this afternoon.

Maximum sustained winds have decreased to 105 mph. Sinlaku is
forecast to weaken through Saturday.

Typhoon force winds extend outward from the center up to
90 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST followed by the next scheduled advisory at
800 AM ChST.

$$

Williams

Original Message :

WTJP31 RJTD 161500
WARNING 161500.
WARNING VALID 171500.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 950 HPA
AT 18.7N 144.9E MARIANAS MOVING NORTHNORTHEAST 07 KNOTS.
POSITION GOOD.
MAX WINDS 80 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES.
FORECAST POSITION FOR 171500UTC AT 21.1N 146.1E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 161311
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 30A
National Weather Service Tiyan GU WP042026
1111 PM ChST Thu Apr 16 2026

...TYPHOON SINLAKU MOVING NORTH THROUGH THE NORTHERN
CNMI TO THE WEST OF AGRIHAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan in the CNMI and the adjacent coastal
waters.

SUMMARY OF 1000 PM CHST...1200 UTC...INFORMATION
-----------------------------------------------
Location...18.4N 144.8E

About 60 miles west-southwest of Agrihan
About 65 miles west-northwest of Pagan
About 85 miles northwest of Alamagan
About 235 miles north-northwest of Saipan
About 240 miles north-northwest of Tinian
About 295 miles north of Rota
About 340 miles north of Guam

Maximum sustained winds...115 mph
Present movement...north...10 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CHST...1200 UTC...the center of Typhoon Sinlaku was
located near Latitude 18.4 degrees North and Longitude 144.8 degrees
East. Sinlaku is moving north at 7 mph. It is expected to make a
slight turn toward the north-northeast with little change in forward
speed through Friday. Typhoon Sinlaku continues to move through the
northern CNMI just west of Agrihan, turning more to the northeast as
it passes north of Agrihan Friday afternoon.

Maximum sustained winds remain at 115 mph. Sinlaku is forecast to
continue weakening through Friday.

Typhoon force winds extend outward from the center up to 90 miles.
Tropical storm force winds extend outward from the center up to 290
miles to the northeast and up to 255 miles elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Friday morning followed by
an intermediate advisory at 500 AM ChST.

$$

Williams

Original Message :

WTJP31 RJTD 160900
WARNING 160900.
WARNING VALID 170900.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 945 HPA
AT 18.1N 144.6E MARIANAS MOVING NORTH 07 KNOTS.
POSITION GOOD.
MAX WINDS 85 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES SOUTH SEMICIRCLE AND 270 MILES
ELSEWHERE.
FORECAST POSITION FOR 170900UTC AT 20.6N 145.9E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 160909
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 30
National Weather Service Tiyan GU WP042026
709 PM ChST Thu Apr 16 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHEAST THROUGH THE NORTHERN
CNMI TO THE WEST OF PAGAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan in the CNMI and the adjacent coastal
waters.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...18.0N 144.6E

About 75 miles west of Pagan
About 85 miles west-northwest of Alamagan
About 85 miles southwest of Agrihan
About 210 miles north-northwest of Saipan
About 220 miles north-northwest of Tinian
About 270 miles north of Rota
About 310 miles north of Guam

Maximum sustained winds...115 mph
Present movement...north-northeast...10 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Typhoon Sinlaku was
located near Latitude 18.0 degrees North and Longitude
144.6 degrees East. Sinlaku is moving north-northeast at 7 mph.
It is expected to continue toward the north-northeast with little
change in forward speed through Friday. Typhoon Sinlaku continues
to move through the northern CNMI just west of Alamagan, Pagan,
and Agrihan, turning more to the northeast as it passes north of
Agrihan Friday afternoon.

Maximum sustained winds remain at 115 mph. Sinlaku is forecast to
continue weakening through Friday.

Typhoon force winds extend outward from the center up to
90 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST tonight followed by the next scheduled
advisory at 200 AM ChST early Friday morning.

$$

DeCou

Original Message :

WTPQ31 PGUM 160718
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 29A
National Weather Service Tiyan GU WP042026
518 PM ChST Thu Apr 16 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHEAST THROUGH THE NORTHERN
CNMI......

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan in the CNMI and the adjacent coastal
waters.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...17.8N 144.6E

About 80 miles west of Alamagan
About 80 miles west-southwest of Pagan
About 95 miles southwest of Agrihan
About 200 miles north-northwest of Saipan
About 205 miles north-northwest of Tinian
About 255 miles north of Rota
About 300 miles north of Guam

Maximum sustained winds...115 mph
Present movement...north-northeast...010 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Typhoon Sinlaku was
located near Latitude 17.8 degrees North and Longitude
144.6 degrees East. Sinlaku is moving north-northeast around 8
mph. It is expected to continue toward the north-northeast with
little change in forward speed through Friday. Typhoon Sinlaku
continues to move through the northern CNMI just west of
Alamagan, Pagan, and Agrihan, which will continue through Friday
as it turns more to the northeast and passes north of Agrihan.

Maximum sustained winds remain at 115 mph. Sinlaku is forecast to
continue weakening through Friday.

Typhoon force winds extend outward from the center up to
90 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 PM ChST followed by an intermediate
advisory at 1100 PM ChST.

$$

DeCou

Original Message :

WTPQ31 PGUM 160359
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 29
National Weather Service Tiyan GU WP042026
159 PM ChST Thu Apr 16 2026

...TYPHOON SINLAKU MOVING SLOWLY NORTH THROUGH THE NORTHERN
CNMI...

CHANGES WITH THIS ADVISORY
--------------------------
The Tropical Storm Warning and Typhoon Watch have been cancelled
for northern coastal waters of Guam.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning and Typhoon Watch are no longer in
effect for the northern coastal waters of Guam.

A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan in the CNMI and the adjacent coastal
waters.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...17.4N 144.5E

About 90 miles west of Alamagan
About 95 miles west-southwest of Pagan
About 120 miles southwest of Agrihan
About 175 miles north-northwest of Saipan
About 180 miles north-northwest of Tinian
About 230 miles north-northwest of Rota
About 270 miles north of Guam

Maximum sustained winds...115 mph
Present movement...north...355 degrees at 4 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 17.4 degrees North and Longitude
144.5 degrees East. Sinlaku is moving north at around 4 mph.
It is expected to make a turn toward the north-northeast with a
slight increase in forward speed through Friday. Typhoon Sinlaku
continues to pull away from Tinian and Saipan and has begun to
move through the northern CNMI just west of Alamagan, Pagan, and
Agrihan, which will continue through Friday as it turns more to
the northeast and passes north of Agrihan.

Maximum sustained winds have decreased to 115 mph. Sinlaku is
forecast to weaken through tonight.

Typhoon force winds extend outward from the center up to
90 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST followed by the next scheduled advisory at
800 PM ChST.

$$

DeCou

Original Message :

WTJP31 RJTD 160300
WARNING 160300.
WARNING VALID 170300.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 945 HPA
AT 17.4N 144.5E MARIANAS MOVING NORTH SLOWLY.
POSITION GOOD.
MAX WINDS 85 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES SOUTH SEMICIRCLE AND 270 MILES
ELSEWHERE.
FORECAST POSITION FOR 170300UTC AT 20.1N 145.6E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 160105
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 28A
National Weather Service Tiyan GU WP042026
1105 AM ChST Thu Apr 16 2026

...TYPHOON SINLAKU MOVING SLOWLY NORTH THROUGH THE NORTHERN
CNMI...

CHANGES WITH THIS ADVISORY
--------------------------
A Tropical Storm Warning and Typhoon Watch are no longer in
effect for the island of Guam.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning and Typhoon Watch are no longer
in effect for the island of Guam.
A Tropical Storm Warning and Typhoon Watch remain in effect for
the northern coastal waters of Guam.
A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan in the CNMI and the adjacent coastal
waters.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...17.2N 144.4E

About 100 miles west-southwest of Alamagan
About 110 miles southwest of Pagan
About 135 miles southwest of Agrihan
About 170 miles north-northwest of Saipan
About 175 miles north-northwest of Tinian
About 215 miles north-northwest of Rota
About 260 miles north of Guam

Maximum sustained winds...130 mph
Present movement...north...355 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM CHST...0100 UTC...the center of Typhoon Sinlaku was
located near Latitude 17.2 degrees North and Longitude 144.4
degrees East. Sinlaku is moving north at 3 mph. It is expected to
make a slight turn toward the north-northeast with slight increase
in forward speed through Friday. Typhoon Sinlaku continues to
pull away from Tinian and Saipan and has begun to move through the
northern CNMI just west of Alamagan, Pagan, and Agrihan, which
will continue through Friday.

Maximum sustained winds remain at 130 mph. Sinlaku is forecast to
continue to slowly weaken for the next few days as it moves
through the northern CNMI.

Typhoon force winds extend outward from the center up to
105 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST followed by an intermediate
advisory at 500 PM ChST.

$$

DeCou

Original Message :

WTJP31 RJTD 152100
WARNING 152100.
WARNING VALID 162100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 935 HPA
AT 16.9N 144.5E MARIANAS MOVING NORTHNORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 90 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 162100UTC AT 19.6N 145.2E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 152122
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 28
National Weather Service Tiyan GU WP042026
722 AM ChST Thu Apr 16 2026

...TYPHOON SINLAKU MOVING NORTH THROUGH THE NORTHERN CNMI...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------

A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan in the CNMI.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...17.0N 144.5E

About 90 miles west-northwest of Anatahan
About 95 miles west-southwest of Alamagan
About 115 miles southwest of Pagan
About 145 miles south-southwest of Agrihan
About 155 miles north-northwest of Saipan
About 160 miles north-northwest of Tinian
About 200 miles north-northwest of Rota
About 245 miles north of Guam

Maximum sustained winds...130 mph
Present movement...north...350 degrees at 6 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Typhoon Sinlaku was
located near Latitude 17.0 degrees North and Longitude 144.5 degrees
East. Sinlaku is moving north at 6 mph. It is expected to make a
slight turn toward the north-northeast with little change in forward
speed through Friday. Typhoon Sinlaku continues to pull away from
Tinian and Saipan and has begun to move through the northern CNMI
just west of Alamagan, Pagan, and Agrihan, which will continue
through Friday.

Maximum sustained winds have increased to 130 mph. Sinlaku is
forecast to begin to weaken later this morning and continue to
slowly weaken for the next few days as it moves through the northern
CNMI.

Typhoon force winds extend outward from the center up to
105 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST followed by the next scheduled advisory
at 200 PM ChST.

$$

Kleeschulte

Original Message :

WTPQ31 PGUM 151839
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 27A
National Weather Service Tiyan GU WP042026
439 AM ChST Thu Apr 16 2026

...TYPHOON SINLAKU CONTINUES TO SLOWLY MOVE NORTHWEST AWAY FROM
TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in
effect for Guam.

SUMMARY OF 400 AM CHST...1800 UTC...INFORMATION
-----------------------------------------------
Location...16.7N 144.5E

About 80 miles west-northwest of Anatahan
About 110 miles southwest of Alamagan
About 130 miles southwest of Pagan
About 135 miles northwest of Saipan
About 140 miles north-northwest of Tinian
About 160 miles south-southwest of Agrihan
About 180 miles north-northwest of Rota
About 225 miles north of Guam

Maximum sustained winds...125 mph
Present movement...northwest...305 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Typhoon Sinlaku was
located near Latitude 16.7 degrees North and Longitude
144.5 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to make a turn toward the north with a slight increase
in forward speed through Friday. Typhoon Sinlaku continues to pull
away from Tinian and Saipan and has begun to move through the
northern CNMI just west of Alamagan, Pagan, and Agrihan which will
continue through Friday.

Maximum sustained winds remain at 125 mph. Sinlaku is forecast to
intensify this morning and then begin to weaken tonight.

Typhoon force winds extend outward from the center up to
105 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST today followed by an intermediate
advisory at 1100 AM ChST.

$$

Williams

Original Message :

WTPQ31 PGUM 151554
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 27
National Weather Service Tiyan GU WP042026
154 AM ChST Thu Apr 16 2026

...TYPHOON SINLAKU CONTINUES TO SLOWLY MOVE NORTHWEST AWAY
FROM TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in
effect for Guam.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...16.5N 144.5E

About 75 miles west of Anatahan
About 115 miles southwest of Alamagan
About 125 miles northwest of Saipan
About 130 miles northwest of Tinian
About 140 miles southwest of Pagan
About 170 miles north-northwest of Rota
About 175 miles south-southwest of Agrihan
About 210 miles north of Guam

Maximum sustained winds...125 mph
Present movement...northwest...305 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Typhoon Sinlaku was
located near Latitude 16.5 degrees North and Longitude
144.5 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to make a turn toward the north with a slight increase
in forward speed through Friday. Typhoon Sinlaku continues to pull
away from Tinian and Saipan and has begun to move through the
northern CNMI just west of Alamagan, Pagan, and Agrihan which will
continue through Friday.

Maximum sustained winds remain at 125 mph. Sinlaku is forecast to
briefly intensify this morning and then begin weakening tonight.

Typhoon force winds extend outward from the center up to
105 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the northeast and up to 255 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST followed by the next scheduled advisory at
800 AM ChST.

$$

Williams

Original Message :

WTJP31 RJTD 151500
WARNING 151500.
WARNING VALID 161500.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 935 HPA
AT 16.4N 144.6E MARIANAS MOVING NORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 90 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 120 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 161500UTC AT 18.9N 144.8E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 151312
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 26A
National Weather Service Tiyan GU WP042026
1112 PM ChST Wed Apr 15 2026

...TYPHOON SINLAKU CONTINUES TO MOVE SLOWLY NORTHWEST AWAY FROM
TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, Saipan,
Alamagan, Pagan, and Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in
effect for Guam.

SUMMARY OF 1000 PM CHST...1200 UTC...INFORMATION
-----------------------------------------------
Location...16.2N 144.6E

About 70 miles west of Anatahan
About 105 miles northwest of Saipan
About 110 miles northwest of Tinian
About 125 miles southwest of Alamagan
About 145 miles north-northwest of Rota
About 155 miles south-southwest of Pagan
About 190 miles south-southwest of Agrihan
About 190 miles north of Guam

Maximum sustained winds...125 mph
Present movement...northwest...325 degrees at 6 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CHST...1200 UTC...the center of Typhoon Sinlaku was
located near Latitude 16.2 degrees North and Longitude 144.6
degrees East. Sinlaku is moving northwest at 6 mph. It is expected
to make a turn toward the north with little change in forward
speed through Thursday. Typhoon Sinlaku continues to pull away
northwestward from Tinian and Saipan and will begin to move
through the northern CNMI just west of Alamagan, Pagan, and
Agrihan, through Friday.

Maximum sustained winds remain at 125 mph. Sinlaku is forecast to
maintain this intensity through Thursday.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 275 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Thursday morning followed by
an intermediate advisory at 500 AM ChST.

$$

Williams

Original Message :

WTPQ31 PGUM 150945
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 26
National Weather Service Tiyan GU WP042026
745 PM ChST Wed Apr 15 2026

...TYPHOON SINLAKU CONTINUES TO MOVE SLOWLY NORTHWEST AWAY FROM
TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in
effect for Guam.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...16.2N 144.8E

About 60 miles west of Anatahan
About 95 miles northwest of Saipan
About 100 miles north-northwest of Tinian
About 120 miles southwest of Alamagan
About 145 miles north of Rota
About 150 miles south-southwest of Pagan
About 185 miles south-southwest of Agrihan
About 190 miles north of Guam

Maximum sustained winds...125 mph
Present movement...northwest...325 degrees at 6 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Typhoon Sinlaku was
located near Latitude 16.2 degrees North and Longitude 144.8 degrees
East. Sinlaku is moving northwest at 6 mph. It is expected to make a
turn toward the north with little change in forward speed through
Thursday. Typhoon Sinlaku continues to pull away northwestward from
Tinian and Saipan and will begin to move through the northern CNMI
just west of Alamagan, Pagan, and Agrihan, through the latter half of
the week, making a gradual turn toward the north, and then northeast
starting Thursday.

Maximum sustained winds remain at 125 mph. Sinlaku is forecast to
maintain this intensity through tonight before weakening once again
on Thursday.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 275 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST followed by the next scheduled advisory
at 200 AM ChST early Thursday morning.

$$

Williams

Original Message :

WTJP31 RJTD 150900
WARNING 150900.
WARNING VALID 160900.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 935 HPA
AT 16.1N 144.7E MARIANAS MOVING NORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 90 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 160900UTC AT 18.1N 144.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 150652
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 25A
National Weather Service Tiyan GU WP042026
452 PM ChST Wed Apr 15 2026

...TYPHOON SINLAKU MOVING SLOWLY NORTH-NORTHWEST AWAY FROM TINIAN
AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in
effect for Guam.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...16.0N 144.8E

About 85 miles northwest of Saipan
About 90 miles northwest of Tinian
About 130 miles north-northwest of Rota
About 130 miles south-southwest of Alamagan
About 160 miles south-southwest of Pagan
About 175 miles north of Guam
About 200 miles south-southwest of Agrihan

Maximum sustained winds...125 mph
Present movement...north-northwest...335 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Typhoon Sinlaku was
located near Latitude 16.0 degrees North and Longitude 144.8
degrees East. Sinlaku is moving north-northwest at 3 mph. It is
expected to make a slight turn toward the north with a slight
increase in forward speed through Thursday. Typhoon Sinlaku is
pulling away north-northwestward from Tinian and Saipan and will
begin to move through the northern CNMI just west of Alamagan,
Pagan, and Agrihan, through the latter half of the week, making a
gradual turn toward the north, and then northeast starting
Thursday.

Maximum sustained winds remain at 125 mph. Sinlaku is forecast to
continue weakening through the next few days as it moves through
the northern CNMI.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 PM ChST this evening followed by an
intermediate advisory at 1100 PM ChST tonight.

$$

DeCou

Original Message :

WTPQ31 PGUM 150348 CCA
TCPPQ1

BULLETIN...CORRECTED
Typhoon Sinlaku (04W) Advisory Number 25
National Weather Service Tiyan GU WP042026
148 PM ChST Wed Apr 15 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHWEST AWAY FROM TINIAN AND
SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

Corrected to include distance to Pagan and Agrihan in the summary.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...15.8N 145.1E

About 65 miles north-northwest of Tinian
About 65 miles northwest of Saipan
About 115 miles north of Rota
About 135 miles south-southwest of Alamagan
About 160 miles north of Guam
About 165 miles south-southwest of Pagan
About 205 miles south of Agrihan

Maximum sustained winds...125 mph
Present movement...north-northwest...335 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 15.8 degrees North and Longitude 145.1
degrees East. Sinlaku is moving north-northwest at 5 mph. It is
expected to make a slight turn toward the north with a slight
increase in forward speed through Thursday. Typhoon Sinlaku is
pulling away north-northwestward from Tinian and Saipan and will
begin to move through the northern CNMI just west of Alamagan,
Pagan, and Agrihan, through the latter half of the week, making a
gradual turn toward the north, and then northeast starting
Thursday.

Maximum sustained winds have decreased to 125 mph. Sinlaku is
forecast to continue weakening through the next few days as it
moves through the northern CNMI.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST this afternoon followed by the next
scheduled advisory at 800 PM ChST this evening.

$$

DeCou

Original Message :

WTPQ31 PGUM 150343
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 25
National Weather Service Tiyan GU WP042026
143 PM ChST Wed Apr 15 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHWEST AWAY FROM TINIAN AND
SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...15.8N 145.1E

About 65 miles north-northwest of Tinian
About 65 miles northwest of Saipan
About 115 miles north of Rota
About 135 miles south-southwest of Alamagan
About 160 miles north of Guam

Maximum sustained winds...125 mph
Present movement...north-northwest...335 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 15.8 degrees North and Longitude 145.1
degrees East. Sinlaku is moving north-northwest at 5 mph. It is
expected to make a slight turn toward the north with a slight
increase in forward speed through Thursday. Typhoon Sinlaku is
pulling away north-northwestward from Tinian and Saipan and will
begin to move through the northern CNMI just west of Alamagan,
Pagan, and Agrihan, through the latter half of the week, making a
gradual turn toward the north, and then northeast starting
Thursday.

Maximum sustained winds have decreased to 125 mph. Sinlaku is
forecast to continue weakening through the next few days as it
moves through the northern CNMI.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST this afternoon followed by the next
scheduled advisory at 800 PM ChST this evening.

$$

DeCou

Original Message :

WTJP31 RJTD 150300
WARNING 150300.
WARNING VALID 160300.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 930 HPA
AT 15.7N 145.0E MARIANAS MOVING NORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 95 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 160300UTC AT 17.6N 144.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
940 HPA, MAX WINDS 90 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 150108
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 24A
National Weather Service Tiyan GU WP042026
1108 AM ChST Wed Apr 15 2026

...TYPHOON SINLAKU MOVING NORTHWEST AWAY FROM TINIAN AND
SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 1100 AM CHST...0100 UTC...INFORMATION
-----------------------------------------------
Location...15.7N 145.1E

About 60 miles northwest of Tinian
About 60 miles northwest of Saipan
About 105 miles north of Rota
About 140 miles south-southwest of Alamagan
About 155 miles north of Guam
About 175 miles south-southwest of Pagan
About 215 miles south of Agrihan

Maximum sustained winds...130 mph
Present movement...northwest...320 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM CHST...0100 UTC...the center of Typhoon Sinlaku was
located near Latitude 15.7 degrees North and Longitude
145.1 degrees East. Sinlaku is moving northwest at 8 mph.
It is expected to make a slight turn to the north-northwest
through Thursday with little change in forward speed. Typhoon
Sinlaku is pulling away northwestward from Tinian and Saipan and
will begin to pass through the northern CNMI just west of the
islands of Alamagan, Pagan, and Agrihan, through the latter half
of the week, making a gradual turn toward the north, and then
northeast starting Thursday.

Maximum sustained winds remain at 130 mph. Sinlaku is forecast to
continue weakening through the next few days as it moves through
the northern CNMI.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST this afternoon followed by an
intermediate advisory at 500 PM ChST this evening.

$$

DeCou

Original Message :

WTJP21 RJTD 150000
WARNING 150000.
WARNING VALID 160000.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 925 HPA
AT 15.7N 145.2E MARIANAS MOVING NORTHNORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 100 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 110 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES.
FORECAST POSITION FOR 160000UTC AT 17.3N 144.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
940 HPA, MAX WINDS 90 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 170000UTC AT 19.8N 145.6E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
955 HPA, MAX WINDS 80 KNOTS NEAR CENTER.
FORECAST POSITION FOR 180000UTC AT 22.6N 147.2E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.
FORECAST POSITION FOR 190000UTC AT 26.3N 150.5E WITH 125 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 200000UTC AT 28.8N 159.4E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP31 RJTD 142100
WARNING 142100.
WARNING VALID 152100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 925 HPA
AT 15.4N 145.4E MARIANAS MOVING NORTHNORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 100 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 110 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTH SEMICIRCLE AND 270 MILES
ELSEWHERE.
FORECAST POSITION FOR 152100UTC AT 17.1N 144.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
940 HPA, MAX WINDS 90 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 142109
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 24
National Weather Service Tiyan GU WP042026
709 AM ChST Wed Apr 15 2026

...TYPHOON SINLAKU MOVING NORTH-NORTHWEST AWAY FROM TINIAN AND
SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...15.4N 145.3E

About 35 miles northwest of Tinian
About 35 miles northwest of Saipan
About 85 miles north of Rota
About 135 miles north-northeast of Guam
About 155 miles south-southwest of Alamagan
About 190 miles south of Pagan
About 230 miles south of Agrihan

Maximum sustained winds...130 mph
Present movement...north-northwest...330 degrees at 4 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Typhoon Sinlaku was
located near Latitude 15.4 degrees North and Longitude
145.3 degrees East. Sinlaku is moving north-northwest at 4 mph.
It is expected to continue with this general course and speed
through Thursday. Typhoon Sinlaku is pulling away north-
northwestward from Tinian and Saipan and will begin to pass
through the northern CNMI just west of the islands of Alamagan,
Pagan, and Agrihan, through the latter half of the week, making a
gradual turn toward the north and then northeast starting
Thursday.

Maximum sustained winds have decreased to 130 mph. Sinlaku is
forecast to continue weakening through the next few days as it
moves through the northern CNMI.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST this morning followed by the next
scheduled advisory at 200 PM ChST this afternoon.

$$

DeCou

Original Message :

WTPQ31 PGUM 141856
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 23A
National Weather Service Tiyan GU WP042026
456 AM ChST Wed Apr 15 2026

...TYPHOON SINLAKU MOVING NORTHWEST...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan,
and Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 500 AM CHST...1900 UTC...INFORMATION
-----------------------------------------------
Location...15.2N 145.4E

About 20 miles northwest of Tinian
About 25 miles west-northwest of Saipan
About 70 miles north of Rota
About 125 miles north-northeast of Guam
About 170 miles south of Alamagan
About 205 miles south of Pagan
About 245 miles south of Agrihan

Maximum sustained winds...145 mph
Present movement...northwest...325 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 AM CHST...1900 UTC...the center of Typhoon Sinlaku was
located near Latitude 15.2 degrees North and Longitude
145.4 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to make a slight turn toward the north-northwest with
little change in forward speed through Thursday. Typhoon Sinlaku
is pulling away to the northwest from Tinian and Saipan and will
begin to pass through the northern CNMI just west of the islands of
Alamagan, Pagan, and Agrihan, through the latter half of the week.

Maximum sustained winds remain at 145 mph. Sinlaku is forecast to
weaken through tonight.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST this morning followed by an
intermediate advisory at 1100 AM ChST later this morning.

$$

Schank

Original Message :

WTJP21 RJTD 141800
WARNING 141800.
WARNING VALID 151800.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 925 HPA
AT 15.2N 145.4E MARIANAS MOVING NORTHNORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 100 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 110 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTH SEMICIRCLE AND 270 MILES
ELSEWHERE.
FORECAST POSITION FOR 151800UTC AT 16.8N 144.6E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
940 HPA, MAX WINDS 90 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 161800UTC AT 19.4N 145.0E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
955 HPA, MAX WINDS 80 KNOTS NEAR CENTER.
FORECAST POSITION FOR 171800UTC AT 21.9N 146.7E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.
FORECAST POSITION FOR 181800UTC AT 25.7N 149.1E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 191800UTC AT 29.3N 156.7E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP31 RJTD 141500
WARNING 141500.
WARNING VALID 151500.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 920 HPA
AT 15.1N 145.7E MARIANAS MOVING NORTHNORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 105 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES.
FORECAST POSITION FOR 151500UTC AT 16.7N 144.7E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 141513
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 23
National Weather Service Tiyan GU WP042026
113 AM ChST Wed Apr 15 2026

...SINLAKU DOWNGRADED TO TYPHOON AND MOVING NORTHWEST...

CHANGES WITH THIS ADVISORY
--------------------------
Sinlaku downgraded from Super Typhoon to Typhoon.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...15.1N 145.7E

About 5 miles west-southwest of Saipan
About 10 miles north of Tinian
About 70 miles north-northeast of Rota
About 125 miles north-northeast of Guam
About 175 miles south of Alamagan
About 210 miles south of Pagan
About 250 miles south of Agrihan

Maximum sustained winds...145 mph
Present movement...northwest...325 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Typhoon Sinlaku was
located near Latitude 15.1 degrees North and Longitude
145.7 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to make a slight turn toward the north-northwest with
little change in forward speed through Thursday. Typhoon Sinlaku
will begin to pull away to the northwest from Tinian and Saipan over
the next few hours, then it will begin to pass through the northern
CNMI just west of the islands of Alamagan, Pagan, and Agrihan,
through the latter half of the week.

Maximum sustained winds have decreased to 145 mph. Sinlaku is
forecast to weaken through Thursday.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST this morning followed by the next scheduled
advisory at 800 AM ChST later this morning.

$$

Schank

Original Message :

WTPQ31 PGUM 141303
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 22A
National Weather Service Tiyan GU WP042026
1103 PM ChST Tue Apr 14 2026

...DANGEROUS SUPER TYPHOON SINLAKU MOVING NORTH-NORTHWEST OVER
TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.

SUMMARY OF 1100 PM CHST...1300 UTC...INFORMATION
-----------------------------------------------
Location...15.0N 145.7E

About 5 miles east of Tinian
About 10 miles south-southwest of Saipan
About 65 miles north-northeast of Rota
About 120 miles north-northeast of Guam
About 180 miles south of Alamagan
About 215 miles south of Pagan
About 260 miles south of Agrihan

Maximum sustained winds...150 mph
Present movement...north-northwest...330 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 PM CHST...1300 UTC...the center of Super Typhoon Sinlaku
was located by PGUA radar near Latitude 15.0 degrees North and
Longitude 145.7 degrees East. Sinlaku is moving north-northwest at
5 mph. It is expected to maintain this general course and forward
speed through Wednesday. as it begins to pass through the northern
CNMI just west of the islands of Alamagan, Pagan, and Agrihan,
through the latter half of the week.

Maximum sustained winds remain at 150 mph. Sinlaku is forecast to
weaken through Wednesday.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Wednesday morning followed
by an intermediate advisory at 500 AM ChST Wednesday morning.

$$

Schank

Original Message :

WTJP21 RJTD 141200
WARNING 141200.
WARNING VALID 151200.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 920 HPA
AT 14.9N 145.9E MARIANAS MOVING NORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 105 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES.
FORECAST POSITION FOR 151200UTC AT 16.5N 144.7E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 161200UTC AT 19.0N 144.8E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 171200UTC AT 21.7N 146.7E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.
FORECAST POSITION FOR 181200UTC AT 25.2N 149.0E WITH 125 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
FORECAST POSITION FOR 191200UTC AT 28.8N 155.6E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 141017 CCA
TCPPQ1

BULLETIN...CORRECTED
SUPER TYPHOON SINLAKU (04W) ADVISORY NUMBER 22
NATIONAL WEATHER SERVICE TIYAN GU WP042026
817 PM CHST TUE APR 14 2026

CORRECTED FORWARD MOTION DIRECTION TYPO IN DISCUSSION SECTION.

...DANGEROUS SUPER TYPHOON SINLAKU NEARLY STATIONARY SOUTH-SOUTHEAST
OF TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
NONE.

WATCHES AND WARNINGS
--------------------
A TYPHOON WARNING REMAINS IN EFFECT FOR ROTA, TINIAN, AND SAIPAN.
A TROPICAL STORM WARNING AND TYPHOON WATCH REMAIN IN EFFECT FOR
GUAM.
A TYPHOON WARNING REMAINS IN EFFECT FOR ALAMAGAN, PAGAN, AND
AGRIHAN.

SUMMARY OF 800 PM CHST...1000 UTC...INFORMATION
-----------------------------------------------
LOCATION...14.7N 145.9E

ABOUT 30 MILES SOUTHEAST OF TINIAN
ABOUT 30 MILES SOUTH-SOUTHEAST OF SAIPAN
ABOUT 64 MILES NORTHEAST OF ROTA
ABOUT 115 MILES NORTHEAST OF GUAM
ABOUT 200 MILES SOUTH OF ALAMAGAN
ABOUT 235 MILES SOUTH OF PAGAN
ABOUT 280 MILES SOUTH OF AGRIHAN

MAXIMUM SUSTAINED WINDS...150 MPH
PRESENT MOVEMENT...NORTHWEST...320 DEGREES AT 3 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 800 PM CHST...1000 UTC...THE CENTER OF SUPER TYPHOON SINLAKU
WAS LOCATED BY PGUA RADAR NEAR LATITUDE 14.7 DEGREES NORTH AND
LONGITUDE 145.9 DEGREES EAST. SINLAKU'S FORWARD HAS SLOWED OVER
THE PAST FEW HOURS AND IS NEARLY STATIONARY ACCORDING TO RADAR,
MOVING NORTHWEST AT 3 MPH, AND WILL LIKELY PASS NEAR OR OVER
TINIAN AND SAIPAN OVER THE NEXT FEW HOURS. IT IS EXPECTED TO MAKE A
SLIGHT TURN TOWARD THE NORTHWEST WITH A SLIGHT INCREASE IN FORWARD
SPEED THROUGH WEDNESDAY NIGHT AS IT BEGINS TO PASS THROUGH
THE NORTHERN CNMI JUST WEST OF THE ISLANDS OF ALAMAGAN, PAGAN, AND
AGRIHAN, THROUGH THE LATTER HALF OF THE WEEK.

MAXIMUM SUSTAINED WINDS HAVE DECREASED TO 150 MPH. SINLAKU IS
FORECAST TO WEAKEN THROUGH WEDNESDAY.

TYPHOON FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO 75
MILES. TROPICAL STORM FORCE WINDS EXTEND OUTWARD FROM THE CENTER
UP TO 265 MILES.

NEXT ADVISORY
-------------
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL WEATHER
SERVICE AT 1100 PM CHST TONIGHT FOLLOWED BY THE NEXT SCHEDULED
ADVISORY AT 200 AM CHST EARLY WEDNESDAY MORNING.

$$

SCHANK=

Original Message :

WTPQ31 PGUM 141000
TCPPQ1
BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 22
National Weather Service Tiyan GU WP042026
800 PM ChST Tue Apr 14 2026
...DANGEROUS SUPER TYPHOON SINLAKU NEARLY STATIONARY SOUTH-SOUTHEAST
OF TINIAN AND SAIPAN...
CHANGES WITH THIS ADVISORY
--------------------------
None.
WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
SUMMARY OF 800 PM CHST...1000 UTC...INFORMATION
-----------------------------------------------
Location...14.7N 145.9E
About 30 miles southeast of Tinian
About 30 miles south-southeast of Saipan
About 64 miles northeast of Rota
About 115 miles northeast of Guam
About 200 miles south of Alamagan
About 235 miles south of Pagan
About 280 miles south of Agrihan
Maximum sustained winds...150 mph
Present movement...northwest...320 degrees at 3 mph
DISCUSSION AND OUTLOOK
----------------------
At 800 PM CHST...1000 UTC...the center of Super Typhoon Sinlaku
was located by PGUA radar near Latitude 14.7 degrees North and
Longitude 145.9 degrees East. Sinlaku's forward has slowed over
the past few hours and is nearly stationary according to radar,
moving west-north west at 3 mph, and will likely pass near or over
Tinian and Saipan over the next few hours. It is expected to make a
slight turn toward the northwest with a slight increase in forward
speed through Wednesday night as it begins to pass through
the northern CNMI just west of the islands of Alamagan, Pagan, and
Agrihan, through the latter half of the week.
Maximum sustained winds have decreased to 150 mph. Sinlaku is
forecast to weaken through Wednesday.
Typhoon force winds extend outward from the center up to 75
miles. Tropical storm force winds extend outward from the center
up to 265 miles.
NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST tonight followed by the next scheduled
advisory at 200 AM ChST early Wednesday morning.
$$
Schank

Original Message :

WTJP31 RJTD 140900
WARNING 140900.
WARNING VALID 150900.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 920 HPA
AT 14.7N 145.9E MARIANAS MOVING NORTHWEST 06 KNOTS.
POSITION GOOD.
MAX WINDS 105 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES.
FORECAST POSITION FOR 150900UTC AT 16.3N 144.9E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPN51 PGTW 140900
WARNING ATCG MIL 04W NWP 260414081339
2026041406 04W SINLAKU 022 01 300 06 SATL RADR 010
T000 146N 1460E 130 R064 055 NE QD 065 SE QD 040 SW QD 055 NW QD R050 120 NE QD 100 SE QD 100 SW QD 110 NW QD R034 230 NE QD 220 SE QD 200 SW QD 220 NW QD
T012 151N 1454E 125 R064 050 NE QD 050 SE QD 040 SW QD 050 NW QD R050 110 NE QD 100 SE QD 090 SW QD 100 NW QD R034 220 NE QD 220 SE QD 190 SW QD 210 NW QD
T024 159N 1448E 120 R064 050 NE QD 050 SE QD 030 SW QD 050 NW QD R050 110 NE QD 100 SE QD 080 SW QD 090 NW QD R034 220 NE QD 220 SE QD 180 SW QD 190 NW QD
T036 169N 1446E 105 R064 050 NE QD 050 SE QD 030 SW QD 030 NW QD R050 110 NE QD 100 SE QD 080 SW QD 090 NW QD R034 220 NE QD 220 SE QD 180 SW QD 180 NW QD
T048 183N 1447E 090 R064 040 NE QD 050 SE QD 040 SW QD 040 NW QD R050 110 NE QD 100 SE QD 070 SW QD 080 NW QD R034 220 NE QD 220 SE QD 180 SW QD 180 NW QD
T072 216N 1473E 075 R064 030 NE QD 040 SE QD 040 SW QD 030 NW QD R050 080 NE QD 070 SE QD 060 SW QD 080 NW QD R034 220 NE QD 220 SE QD 180 SW QD 210 NW QD
T096 244N 1502E 065 R064 010 NE QD 030 SE QD 010 SW QD 000 NW QD R050 070 NE QD 070 SE QD 050 SW QD 050 NW QD R034 210 NE QD 220 SE QD 180 SW QD 170 NW QD
T120 279N 1550E 060 R050 040 NE QD 100 SE QD 140 SW QD 110 NW QD R034 210 NE QD 220 SE QD 200 SW QD 140 NW QD
AMP
120HR BECOMING EXTRATROPICAL
SUBJ: SUPER TYPHOON 04W (SINLAKU) WARNING NR 022
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 022
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
140600Z --- NEAR 14.6N 146.0E
MOVEMENT PAST SIX HOURS - 300 DEGREES AT 06 KTS
POSITION ACCURATE TO WITHIN 010 NM
POSITION BASED ON EYE FIXED BY A COMBINATION OF
SATELLITE AND RADAR
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 055 NM NORTHEAST QUADRANT
065 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
220 NM NORTHWEST QUADRANT
REPEAT POSIT: 14.6N 146.0E
---
FORECASTS:
12 HRS, VALID AT:
141800Z --- 15.1N 145.4E
MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
190 NM SOUTHWEST QUADRANT
210 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 325 DEG/ 05 KTS
---
24 HRS, VALID AT:
150600Z --- 15.9N 144.8E
MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 350 DEG/ 05 KTS
---
36 HRS, VALID AT:
151800Z --- 16.9N 144.6E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 005 DEG/ 07 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
160600Z --- 18.3N 144.7E
MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 035 DEG/ 10 KTS
---
72 HRS, VALID AT:
170600Z --- 21.6N 147.3E
MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
210 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 045 DEG/ 10 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
180600Z --- 24.4N 150.2E
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 010 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 050 DEG/ 14 KTS
---
120 HRS, VALID AT:
190600Z --- 27.9N 155.0E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
140 NM NORTHWEST QUADRANT
---
REMARKS:
140900Z POSITION NEAR 14.7N 145.8E.
14APR26. SUPER TYPHOON 04W (SINLAKU), LOCATED APPROXIMATELY 38 NM
SOUTH-SOUTHEAST OF SAIPAN, HAS TRACKED WEST-NORTHWESTWARD AT 06
KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 140600Z IS 925 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 140600Z IS 48 FEET. NEXT WARNINGS AT
141500Z, 142100Z, 150300Z AND 150900Z.
//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 81N1513E 65
0426041018 81N1513E 65
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041306 127N1480E 150
0426041306 127N1480E 150
0426041306 127N1480E 150
0426041312 131N1474E 150
0426041312 131N1474E 150
0426041312 131N1474E 150
0426041318 137N1470E 145
0426041318 137N1470E 145
0426041318 137N1470E 145
0426041400 143N1465E 135
0426041400 143N1465E 135
0426041400 143N1465E 135
0426041406 146N1460E 130
0426041406 146N1460E 130
0426041406 146N1460E 130
NNNN

Original Message :

WTPQ31 PGUM 140657
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 20B
National Weather Service Tiyan GU WP042026
457 PM ChST Tue Apr 14 2026

...DANGEROUS SUPER TYPHOON SINLAKU MOVING WEST-NORTHWEST TOWARD
TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...14.6N 146.0E

About 35 miles southeast of Tinian
About 40 miles south-southeast of Saipan
About 60 miles east-northeast of Rota
About 110 miles northeast of Guam
About 210 miles south of Alamagan
About 245 miles south of Pagan
About 285 miles south of Agrihan

Maximum sustained winds...155 mph
Present movement...west-northwest..300 degrees at 6 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST, 0700 UTC, the center of Super Typhoon Sinlaku was
located near Latitude 14.6 degrees North and Longitude 146.0
degrees East. Sinlaku is moving west-northwest at 4 mph. It is
expected to make a turn toward the north-northwest with an
increase in forward speed tonight, then make a slight turn to the
north Wednesday and Wednesday night as it begins to pass through
the northern CNMI just west of the islands of Alamagan, Pagan, and
Agrihan, through the latter half of the week.

Maximum sustained winds remain at 155 mph. Sinlaku is forecast to
gradually weaken through the next several days after crossing the
Marianas near or over Tinian and Saipan tonight as a Category 4
storm.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 PM ChST this evening followed by an
intermediate advisory at 1100 PM ChST tonight.

$$

DeCou

Original Message :

WTJP21 RJTD 140600
WARNING 140600.
WARNING VALID 150600.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 920 HPA
AT 14.6N 146.0E MARIANAS MOVING WESTNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 105 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES.
FORECAST POSITION FOR 150600UTC AT 16.2N 145.1E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 160600UTC AT 18.5N 144.7E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 170600UTC AT 21.0N 146.2E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.
FORECAST POSITION FOR 180600UTC AT 24.1N 148.2E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.
FORECAST POSITION FOR 190600UTC AT 28.0N 153.5E WITH 215 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 140406
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 21
National Weather Service Tiyan GU WP042026
Issued by National Weather Service Honolulu HI
206 PM ChST Tue Apr 14 2026

...DANGEROUS SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD TINIAN
AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------

A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Alamagan, Pagan, and Agrihan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 200 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...14.6N 146.1E

About 45 miles south-southeast of Tinian
About 40 miles southeast of Saipan
About 60 miles east-northeast of Rota
About 100 miles northeast of Guam
About 210 miles south of Alamagan
About 240 miles south of Pagan
About 290 miles south of Agrihan

Maximum sustained winds...155 mph
Present movement...northwest...320 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 200 PM CHST...0400 UTC...the center of Super Typhoon Sinlaku
was located near Latitude 14.6 degrees North and Longitude
146.1 degrees East. Sinlaku is moving northwest at 9 mph. It is
expected to continue this motion through tonight then make a slight
turn toward the north-northwest Wednesday.

Maximum sustained winds have decreased to 155 mph. Sinlaku is
forecast to gradually weaken through Wednesday.

Typhoon force winds extend outward from the center up to
75 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST followed by the next scheduled advisory at
800 PM ChST.

$$

Wroe

Original Message :

WTJP31 RJTD 140300
WARNING 140300.
WARNING VALID 150300.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 920 HPA
AT 14.5N 146.2E MARIANAS MOVING NORTHWEST 08 KNOTS.
POSITION GOOD.
MAX WINDS 105 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES.
FORECAST POSITION FOR 150300UTC AT 16.1N 145.3E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPN31 PGTW 140300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SUPER TYPHOON 04W (SINLAKU) WARNING NR 021//
RMKS/
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 021
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
140000Z --- NEAR 14.3N 146.5E
MOVEMENT PAST SIX HOURS - 320 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 065 NM NORTHEAST QUADRANT
065 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
190 NM SOUTHWEST QUADRANT
220 NM NORTHWEST QUADRANT
REPEAT POSIT: 14.3N 146.5E
---
FORECASTS:
12 HRS, VALID AT:
141200Z --- 15.2N 145.9E
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
// END PART 01 //

Original Message :

WTPN51 PGTW 140300
WARNING ATCG MIL 04W NWP 260414013433
2026041400 04W SINLAKU 021 01 320 08 SATL 020
T000 143N 1465E 135 R064 065 NE QD 065 SE QD 060 SW QD 060 NW QD R050 120 NE QD 100 SE QD 100 SW QD 110 NW QD R034 230 NE QD 220 SE QD 190 SW QD 220 NW QD
T012 152N 1459E 130 R064 060 NE QD 060 SE QD 050 SW QD 050 NW QD R050 120 NE QD 110 SE QD 090 SW QD 100 NW QD R034 220 NE QD 220 SE QD 180 SW QD 210 NW QD
T024 160N 1455E 120 R064 060 NE QD 060 SE QD 040 SW QD 050 NW QD R050 110 NE QD 100 SE QD 090 SW QD 090 NW QD R034 220 NE QD 210 SE QD 180 SW QD 200 NW QD
T036 170N 1453E 110 R064 050 NE QD 050 SE QD 040 SW QD 040 NW QD R050 110 NE QD 100 SE QD 090 SW QD 090 NW QD R034 220 NE QD 220 SE QD 180 SW QD 190 NW QD
T048 183N 1453E 100 R064 050 NE QD 050 SE QD 040 SW QD 040 NW QD R050 110 NE QD 100 SE QD 080 SW QD 090 NW QD R034 210 NE QD 220 SE QD 180 SW QD 180 NW QD
T072 210N 1469E 080 R064 040 NE QD 050 SE QD 040 SW QD 030 NW QD R050 090 NE QD 080 SE QD 070 SW QD 080 NW QD R034 210 NE QD 210 SE QD 170 SW QD 200 NW QD
T096 237N 1498E 065 R064 040 NE QD 040 SE QD 040 SW QD 030 NW QD R050 070 NE QD 060 SE QD 060 SW QD 060 NW QD R034 210 NE QD 190 SE QD 150 SW QD 190 NW QD
T120 271N 1543E 060 R050 100 NE QD 100 SE QD 100 SW QD 090 NW QD R034 210 NE QD 200 SE QD 170 SW QD 150 NW QD
AMP
120HR BECOMING EXTRATROPICAL
SUBJ: SUPER TYPHOON 04W (SINLAKU) WARNING NR 021
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 021
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
140000Z --- NEAR 14.3N 146.5E
MOVEMENT PAST SIX HOURS - 320 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 065 NM NORTHEAST QUADRANT
065 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
190 NM SOUTHWEST QUADRANT
220 NM NORTHWEST QUADRANT
REPEAT POSIT: 14.3N 146.5E
---
FORECASTS:
12 HRS, VALID AT:
141200Z --- 15.2N 145.9E
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
210 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 335 DEG/ 04 KTS
---
24 HRS, VALID AT:
150000Z --- 16.0N 145.5E
MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
210 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
200 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 350 DEG/ 05 KTS
---
36 HRS, VALID AT:
151200Z --- 17.0N 145.3E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 360 DEG/ 06 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
160000Z --- 18.3N 145.3E
MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 030 DEG/ 08 KTS
---
72 HRS, VALID AT:
170000Z --- 21.0N 146.9E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
210 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
200 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 045 DEG/ 10 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
180000Z --- 23.7N 149.8E
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 050 DEG/ 13 KTS
---
120 HRS, VALID AT:
190000Z --- 27.1N 154.3E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
---
REMARKS:
140300Z POSITION NEAR 14.5N 146.3E.
14APR26. SUPER TYPHOON 04W (SINLAKU), LOCATED APPROXIMATELY 68 NM
SOUTHEAST OF SAIPAN, HAS TRACKED NORTHWESTWARD AT 08 KNOTS OVER
THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 140000Z IS 919 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 140000Z IS 42 FEET.
NEXT WARNINGS AT 140900Z, 141500Z, 142100Z AND 150300Z.//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 81N1513E 65
0426041018 81N1513E 65
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041306 127N1480E 150
0426041306 127N1480E 150
0426041306 127N1480E 150
0426041312 131N1474E 150
0426041312 131N1474E 150
0426041312 131N1474E 150
0426041318 137N1470E 145
0426041318 137N1470E 145
0426041318 137N1470E 145
0426041400 143N1465E 135
0426041400 143N1465E 135
0426041400 143N1465E 135
NNNN

Original Message :

WTPQ31 PGUM 140114
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 20A
National Weather Service Tiyan GU WP042026
1114 AM ChST Tue Apr 14 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Alamagan, Pagan, and
Agrihan.
A Typhoon Warning remains in effect for Rota, Tinian,
and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in
effect for Guam.

SUMMARY OF 1100 AM CHST...0100 UTC...INFORMATION
-----------------------------------------------
Location...14.3N 146.4E

About 70 miles southeast of Tinian
About 70 miles southeast of Saipan
About 80 miles east of Rota
About 120 miles east-northeast of Guam
About 230 miles south of Alamagan
About 270 miles south of Pagan
About 310 miles south of Agrihan

Maximum sustained winds...165 mph
Present movement...northwest...315 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM CHST...0100 UTC...the center of Super Typhoon Sinlaku
was located by PGUA radar near Latitude 14.3 degrees North and
Longitude 146.4 degrees East. Sinlaku is moving northwest at 10
mph. It is expected to make a slight turn toward the north-
northwest with little change in forward speed through Wednesday,
before making a turn to the north, passing through the northern
CNMI through the latter half of the week. Tropical storm force
winds will continue to spread and increase across Guam, Rota,
Tinian, and Saipan. Typhoon force winds are expected to start
reaching Tinian and Saipan this afternoon. Latest JTWC forecast
track still indicate passage near or over Tinian and Saipan.

Maximum sustained winds remain at 165 mph. Sinlaku is forecast to
gradually weaken through the next several days, but it is still
expected to cross the Marianas near or over Tinian and Saipan as a
Category 4 storm.

Typhoon force winds extend outward from the center up to
80 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST this afternoon followed by an
intermediate advisory at 500 PM ChST.

$$

DeCou/Cruz

Original Message :

WTJP21 RJTD 140000
WARNING 140000.
WARNING VALID 150000.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 910 HPA
AT 14.2N 146.6E MARIANAS MOVING NORTHNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 110 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES.
FORECAST POSITION FOR 150000UTC AT 15.9N 145.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 160000UTC AT 18.0N 144.8E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 170000UTC AT 20.7N 146.2E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.
FORECAST POSITION FOR 180000UTC AT 23.4N 148.5E WITH 125 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.
FORECAST POSITION FOR 190000UTC AT 27.2N 152.7E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 132218
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 20
National Weather Service Tiyan GU WP042026
818 AM ChST Tue Apr 14 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST...

CHANGES WITH THIS ADVISORY
--------------------------
A Typhoon Warning has been issued for Alamagan, Pagan, and Agrihan.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning is now in effect for Alamagan, Pagan, and Agrihan.
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 800 AM CHST...2200 UTC...INFORMATION
-----------------------------------------------
Location...14.1N 146.7E

About 105 miles east of Rota
About 110 miles southeast of Tinian
About 110 miles southeast of Saipan
About 140 miles east-northeast of Guam
About 265 miles south-southeast of Alamagan
About 300 miles south-southeast of Pagan
About 345 miles south-southeast of Agrihan

Maximum sustained winds...165 mph
Present movement...northwest...320 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 800 AM CHST...2200 UTC...the center of Super Typhoon Sinlaku
was located by PGUA radar near Latitude 14.1 degrees North and
Longitude 146.7 degrees East. Sinlaku is moving northwest at 7
mph. It is expected to maintain this general course and speed through
Wednesday, before making a turn to the north, passing through the
northern CNMI through the latter half of the week. Tropical storm
force winds will continue to spread and increase across Guam, Rota,
Tinian, and Saipan. Typhoon force winds are expected to start
reaching Tinian and Saipan this afternoon. Latest JTWC forecast
track has shifted further north, still indicating passage near or
over Tinian and Saipan.

Maximum sustained winds have decreased to 165 mph. Sinlaku is
forecast to weaken through tonight.

Typhoon force winds extend outward from the center up to
80 miles. Tropical storm force winds extend outward from the
center up to 265 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST followed by the next scheduled advisory
at 200 AM ChST early Wednesday morning.

$$

DeCou

Original Message :

WTJP31 RJTD 132100
WARNING 132100.
WARNING VALID 142100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 13.9N 146.8E MARIANAS MOVING NORTHNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 142100UTC AT 15.7N 145.3E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 100 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 132119
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 19
National Weather Service Tiyan GU WP042026
719 AM ChST Tue Apr 14 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD TINIAN AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
A Typhoon Warning has been issued for Alamagan, Pagan, and Agrihan.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning is now in effect for Alamagan, Pagan, and Agrihan.
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...13.9N 146.8E

About 145 miles east-southeast of Rota
About 155 miles southeast of Tinian
About 160 miles east of Guam
About 160 miles southeast of Saipan
About 310 miles south-southeast of Alamagan
About 345 miles south-southeast of Pagan
About 390 miles south-southeast of Agrihan

Maximum sustained winds...175 mph
Present movement...northwest...320 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Super Typhoon Sinlaku
was located by PGUA radar near Latitude 13.9 degrees North and
Longitude 146.8 degrees East. Sinlaku is moving northwest at 8 mph.
It is expected to maintain this general course and speed through
Wednesday, before making a turn to the north, passing through the
northern CNMI through the latter half of the week. Tropical storm
force winds will continue to spread and increase across Guam, Rota,
Tinian, and Saipan. Typhoon force winds are expected to start
reaching Tinian and Saipan this afternoon. Latest JTWC forecast
track has shifted further north, still indicating passage near or
over Tinian and Saipan.

Maximum sustained winds remain at 175 mph. Sinlaku is forecast to
gradually weaken through the next several days, but it is still
expected to cross the Marianas near or over Tinian and Saipan as a
Category 4 storm.

Typhoon force winds extend outward from the center up to
80 miles. Tropical storm force winds extend outward from the
center up to 290 miles to the east and up to 215 miles to the
west.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST followed by the next scheduled advisory
at 200 PM ChST.

$$

DeCou

Original Message :

WTPQ31 PGUM 131928 CCA
TCPPQ1

BULLETIN...CORRECTED
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 19A
National Weather Service Tiyan GU WP042026
528 AM ChST Tue Apr 14 2026

Corrected headline for duplicate words.

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD TINIAN
AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning remains in effect for Pagan and Alamagan.
A Tropical Storm Watch remains in effect for Agrihan.

SUMMARY OF 500 AM CHST...1900 UTC...INFORMATION
-----------------------------------------------
Location...13.8N 146.9E

About 115 miles east-southeast of Rota
About 120 miles southeast of Tinian
About 120 miles southeast of Saipan
About 145 miles east of Guam
About 270 miles south-southeast of Alamagan
About 310 miles south-southeast of Pagan
About 350 miles south-southeast of Agrihan

Maximum sustained winds...175 mph
Present movement...northwest...320 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 AM CHST...1900 UTC...the center of Super Typhoon Sinlaku was
located by PGUA radar near Latitude 13.8 degrees North and Longitude
146.9 degrees East. Sinlaku is moving northwest at 9 mph. It is
expected to maintain this general course and speed through Wednesday.
Tropical storm force winds will continue to spread and increase
across across Guam, Rota, Tinian, and Saipan. Typhoon force winds are
expected to start reaching Tinian, and Saipan this afternoon. Latest
JTWC Latest forecast track still has passage near or over Tinian and
Saipan.

Maximum sustained winds remain at 175 mph. Sinlaku is forecast to
weaken through tonight. Sinlaku is forecast to weaken through
Wednesday. While Sinlaku is forecast to gradually weaken through the
next several days, it is still expected to cross the Marianas near or
over Tinian and Saipan as a Category 4 or Category 5 storm.

Typhoon force winds extend outward from the center up to 80 miles.
Tropical storm force winds extend outward from the center up to 290
miles to the east and up to 215 miles to the west.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST this morning followed by an
intermediate advisory at 1100 AM ChST late this morning.

$$

Schank

Original Message :

WTPQ31 PGUM 131911
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 19A
National Weather Service Tiyan GU WP042026
511 AM ChST Tue Apr 14 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST NORTHWEST TOWARD TINIAN
AND SAIPAN...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning remains in effect for Pagan and Alamagan.
A Tropical Storm Watch remains in effect for Agrihan.

SUMMARY OF 500 AM CHST...1900 UTC...INFORMATION
-----------------------------------------------
Location...13.8N 146.9E

About 115 miles east-southeast of Rota
About 120 miles southeast of Tinian
About 120 miles southeast of Saipan
About 145 miles east of Guam
About 270 miles south-southeast of Alamagan
About 310 miles south-southeast of Pagan
About 350 miles south-southeast of Agrihan

Maximum sustained winds...175 mph
Present movement...northwest...320 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 AM CHST...1900 UTC...the center of Super Typhoon Sinlaku was
located by PGUA radar near Latitude 13.8 degrees North and Longitude
146.9 degrees East. Sinlaku is moving northwest at 9 mph. It is
expected to maintain this general course and speed through Wednesday.
Tropical storm force winds will continue to spread and increase
across across Guam, Rota, Tinian, and Saipan. Typhoon force winds are
expected to start reaching Tinian, and Saipan this afternoon. Latest
JTWC Latest forecast track still has passage near or over Tinian and
Saipan.

Maximum sustained winds remain at 175 mph. Sinlaku is forecast to
weaken through tonight. Sinlaku is forecast to weaken through
Wednesday. While Sinlaku is forecast to gradually weaken through the
next several days, it is still expected to cross the Marianas near or
over Tinian and Saipan as a Category 4 or Category 5 storm.

Typhoon force winds extend outward from the center up to 80 miles.
Tropical storm force winds extend outward from the center up to 290
miles to the east and up to 215 miles to the west.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST this morning followed by an
intermediate advisory at 1100 AM ChST late this morning.

$$

Schank

Original Message :

WTJP21 RJTD 131800
WARNING 131800.
WARNING VALID 141800.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 13.7N 147.1E MARIANAS MOVING NORTHNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 141800UTC AT 15.5N 145.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 151800UTC AT 17.4N 144.3E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 90 KNOTS NEAR CENTER.
FORECAST POSITION FOR 161800UTC AT 20.0N 144.8E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.
FORECAST POSITION FOR 171800UTC AT 22.5N 146.3E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.
FORECAST POSITION FOR 181800UTC AT 26.1N 149.2E WITH 120 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 131605
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 19
National Weather Service Tiyan GU WP042026
205 AM ChST Tue Apr 14 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning remains in effect for Pagan and Alamagan.
A Tropical Storm Watch remains in effect for Agrihan.

SUMMARY OF 200 AM CHST...1600 UTC...INFORMATION
-----------------------------------------------
Location...13.4N 147.2E

About 145 miles east-southeast of Rota
About 155 miles southeast of Tinian
About 155 miles southeast of Saipan
About 165 miles east of Guam
About 310 miles south-southeast of Alamagan
About 340 miles south-southeast of Pagan
About 385 miles south-southeast of Agrihan

Maximum sustained winds...175 mph
Present movement...northwest...320 degrees at 7 mph

DISCUSSION AND OUTLOOK
----------------------
At 200 AM CHST...1600 UTC...the center of Super Typhoon Sinlaku was
located near Latitude 13.3 degrees North and Longitude 147.2 degrees
East. Sinlaku is moving northwest at 7 mph. It is expected maintain
this general motion and speed through Wednesday. Tropical storm force
winds will continue to spread and increase across across Guam, Rota,
Tinian, and Saipan. Typhoon force winds are expected to start
reaching Rota, Tinian, and Saipan this afternoon. Latest JTWC
forecast track has shifted southward slightly but still maintains
passage near or over Tinian and Saipan.

Maximum sustained winds remain at 175 mph. Sinlaku is forecast to
weaken through Wednesday. While Sinlaku is forecast to gradually
weaken through the next several days, it is still expected to cross
the Marianas near or over Tinian and Saipan as a Category 4 or
Category 5 storm.

Typhoon force winds extend outward from the center up to 80 miles.
Tropical storm force winds extend outward from the center up to 290
miles to the east and up to 215 miles to the west.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST this morning followed by the next scheduled
advisory at 800 AM ChST later in the morning.

$$

Schank

Original Message :

WTPQ50 RJTD 131500
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 131500UTC 13.3N 147.2E GOOD
MOVE WNW 07KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 141500UTC 15.3N 145.4E 35NM 70%
MOVE NW 07KT
PRES 920HPA
MXWD 105KT
GUST 150KT
45HF 151200UTC 16.8N 144.3E 55NM 70%
MOVE NW SLOWLY
PRES 935HPA
MXWD 095KT
GUST 135KT
69HF 161200UTC 19.3N 143.9E 80NM 70%
MOVE N 06KT
PRES 945HPA
MXWD 085KT
GUST 120KT
93HF 171200UTC 21.7N 144.6E 100NM 70%
MOVE NNE 06KT
PRES 965HPA
MXWD 070KT
GUST 100KT
117HF 181200UTC 25.2N 146.2E 150NM 70%
MOVE NNE 09KT
PRES 970HPA
MXWD 065KT
GUST 095KT =

Original Message :

WTJP31 RJTD 131500
WARNING 131500.
WARNING VALID 141500.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 13.3N 147.2E MARIANAS MOVING WESTNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 141500UTC AT 15.3N 145.4E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 105 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ30 RJTD 131200
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.21 FOR TY 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TY SINLAKU IS LOCATED AT 13.1N, 147.5E. INFORMATION ON THE CURRENT
POSITION IS BASED ON THE EYE IN ANIMATED MSI. POSITIONAL ACCURACY
IS GOOD. CENTRAL PRESSURE IS 905HPA AND MAXIMUM SUSTAINED WINDS
NEAR THE CENTER ARE 115KNOTS. THE SYSTEM IS IN A FAVORABLE
ENVIRONMENT FOR DEVELOPMENT UNDER THE INFLUENCE OF HIGH SSTS, HIGH
TCHP, WEAK VWS AND GOOD UPPER-LEVEL OUTFLOW. HOWEVER, THE
INSUFFICIENT ENVIRONMENT FOR ITS FURTHER DEVELOPMENT HAS CAUSED IT
TO MAINTAIN ITS INTENSITY OVER THE LAST SIX HOURS. INFORMATION ON
THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING WEST-NORTHWESTWARD ALONG THE SOUTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
SYSTEM HAS AN EYE. ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS
OF ANTICYCLONIC OUTFLOW. DMSP-F17/SSMIS 89 GHZ MICROWAVE IMAGERY
SHOWS THE SYSTEM HAS AN EYE.
3.TRACK FORECAST
THE SYSTEM WILL MOVE SLOWLY NORTHWESTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT48. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH-NORTHEAST UNTIL FT72. THE SYSTEM WILL
THEN MOVE NORTH-NORTHEASTWARD UNTIL FT120. THE TRACK FORECAST IS
BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS. TRACK
FORECAST CONFIDENCE IS FAIR BECAUSE ALL NWP MODELS ARE IN CLOSE
AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL WEAKEN UNTIL FT120 DUE TO THE INFLUENCE OF
INTERACTION WITH LOWER SSTS AND REDUCED TCHP. THE INTENSITY
FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ31 PGUM 131308
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 18A
National Weather Service Tiyan GU WP042026
1108 PM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING WEST-NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning remains in effect for Pagan and Alamagan.
A Tropical Storm Watch remains in effect for Agrihan.

SUMMARY OF 1100 PM CHST...1300 UTC...INFORMATION
-----------------------------------------------
Location...13.2N 147.3E

About 155 miles east-southeast of Rota
About 165 miles southeast of Tinian
About 170 miles southeast of Saipan
About 170 miles east of Guam
About 320 miles south-southeast of Alamagan
About 355 miles south-southeast of Pagan
About 400 miles south-southeast of Agrihan

Maximum sustained winds...175 mph
Present movement...west-northwest...305 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 PM CHST...1300 UTC...the center of Super Typhoon Sinlaku was
located by PGUA radar near Latitude 13.2 degrees North and Longitude
147.3 degrees East. Sinlaku is moving west-northwest at 8 mph. It is
expected to turn slightly to the northwest with a slight decrease in
speed through Tuesday. Tropical storm force winds will continue to
spread and increase across across Guam, Rota, Tinian, and Saipan.
Typhoon force winds are expected to start reaching Rota, Tinian, and
Saipan late Tuesday morning or early Tuesday afternoon. Latest JTWC
forecast track still maintains passage near or over Tinian and
Saipan.

Maximum sustained winds remain at 175 mph. Sinlaku is forecast to
weaken through Tuesday Sinlaku is forecast to gradually weaken
through the next several days, however, it is still expected to cross
the Marianas near or over Tinian and Saipan as a Category 4 or
Category 5 storm.

Typhoon force winds extend outward from the center up to 80 miles.
Tropical storm force winds extend outward from the center up to 275
miles to the northeast and up to 215 miles elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Tuesday morning followed by
an intermediate advisory at 500 AM ChST Tuesday morning.

$$

Schank

Original Message :

WTPQ50 RJTD 131200
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 131200UTC 13.1N 147.5E GOOD
MOVE WNW 07KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 141200UTC 15.2N 145.6E 35NM 70%
MOVE NW 07KT
PRES 920HPA
MXWD 105KT
GUST 150KT
48HF 151200UTC 16.8N 144.3E 55NM 70%
MOVE NW SLOWLY
PRES 935HPA
MXWD 095KT
GUST 135KT
72HF 161200UTC 19.3N 143.9E 80NM 70%
MOVE N 06KT
PRES 945HPA
MXWD 085KT
GUST 120KT
96HF 171200UTC 21.7N 144.6E 100NM 70%
MOVE NNE 06KT
PRES 965HPA
MXWD 070KT
GUST 100KT
120HF 181200UTC 25.2N 146.2E 150NM 70%
MOVE NNE 09KT
PRES 970HPA
MXWD 065KT
GUST 095KT =

Original Message :

WTJP21 RJTD 131200
WARNING 131200.
WARNING VALID 141200.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 13.1N 147.5E MARIANAS MOVING WESTNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 141200UTC AT 15.2N 145.6E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 105 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 151200UTC AT 16.8N 144.3E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
FORECAST POSITION FOR 161200UTC AT 19.3N 143.9E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 171200UTC AT 21.7N 144.6E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.
FORECAST POSITION FOR 181200UTC AT 25.2N 146.2E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 131001
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 18
National Weather Service Tiyan GU WP042026
801 PM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING WEST-NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning remains in effect for Pagan and Alamagan.
A Tropical Storm Watch remains in effect for Agrihan.

SUMMARY OF 800 PM CHST...1000 UTC...INFORMATION
-----------------------------------------------
Location...13.0N 147.7E

About 185 miles east-southeast of Rota
About 195 miles southeast of Tinian
About 195 miles southeast of Saipan
About 200 miles east of Guam
About 340 miles south-southeast of Alamagan
About 375 miles south-southeast of Pagan
About 420 miles south-southeast of Agrihan

Maximum sustained winds...175 mph
Present movement...west-northwest...305 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 800 PM CHST...1000 UTC...the center of Super Typhoon Sinlaku was
located BY PGUA radar near Latitude 13.0 degrees North and Longitude
147.7 degrees East. Sinlaku is moving west-northwest at 8 mph. It is
expected to maintain this general course with a slight decrease in
forward speed through Tuesday. The onset of tropical storm force
winds are expected to occur shortly across Guam, Rota, Tinian, and
Saipan. Typhoon force winds are expected to start reaching Rota,
Tinian, and Saipan late Tuesday morning or early Tuesday afternoon.
Latest JTWC forecast track still maintains passage near or over
Tinian and Saipan.

Maximum sustained winds have decreased to 175 mph. Sinlaku is
forecast to weaken through Tuesday. Sinlaku is forecast to gradually
weaken through the next several days, however, it is still expected
to cross the Marianas near or over Tinian and Saipan as a Category 4
or Category 5 storm.

Typhoon force winds extend outward from the center up to 80 miles.
Tropical storm force winds extend outward from the center up to 275
miles to the northeast and up to 215 miles elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM tonight ChST followed by the next scheduled
advisory at 200 AM ChST early Tuesday morning.

$$

Schank

Original Message :

WTJP31 RJTD 130900
WARNING 130900.
WARNING VALID 140900.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 12.9N 147.8E MARIANAS MOVING WESTNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 140900UTC AT 15.0N 145.8E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 105 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 130900
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 130900UTC 12.9N 147.8E GOOD
MOVE WNW 07KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 140900UTC 15.0N 145.8E 35NM 70%
MOVE NW 07KT
PRES 920HPA
MXWD 105KT
GUST 150KT
45HF 150600UTC 16.4N 144.6E 55NM 70%
MOVE NW SLOWLY
PRES 935HPA
MXWD 095KT
GUST 135KT
69HF 160600UTC 18.8N 143.9E 80NM 70%
MOVE NNW 06KT
PRES 945HPA
MXWD 085KT
GUST 120KT
93HF 170600UTC 21.3N 145.2E 100NM 70%
MOVE NNE 07KT
PRES 960HPA
MXWD 075KT
GUST 105KT
117HF 180600UTC 24.2N 146.8E 150NM 70%
MOVE NNE 08KT
PRES 970HPA
MXWD 065KT
GUST 095KT =

Original Message :

WTPN51 PGTW 130900
WARNING ATCG MIL 04W NWP 260413075547
2026041306 04W SINLAKU 018 01 305 09 SATL RADR 020
T000 127N 1480E 150 R064 070 NE QD 070 SE QD 045 SW QD 055 NW QD R050 085 NE QD 090 SE QD 135 SW QD 090 NW QD R034 240 NE QD 180 SE QD 185 SW QD 180 NW QD
T012 138N 1468E 145 R064 060 NE QD 060 SE QD 040 SW QD 050 NW QD R050 100 NE QD 090 SE QD 100 SW QD 090 NW QD R034 230 NE QD 210 SE QD 170 SW QD 180 NW QD
T024 147N 1460E 135 R064 060 NE QD 060 SE QD 040 SW QD 050 NW QD R050 100 NE QD 100 SE QD 100 SW QD 090 NW QD R034 220 NE QD 200 SE QD 180 SW QD 180 NW QD
T036 155N 1454E 120 R064 060 NE QD 050 SE QD 040 SW QD 050 NW QD R050 100 NE QD 100 SE QD 100 SW QD 090 NW QD R034 220 NE QD 200 SE QD 180 SW QD 180 NW QD
T048 163N 1448E 115 R064 050 NE QD 050 SE QD 040 SW QD 040 NW QD R050 100 NE QD 100 SE QD 100 SW QD 090 NW QD R034 210 NE QD 200 SE QD 180 SW QD 180 NW QD
T072 185N 1443E 095 R064 050 NE QD 060 SE QD 050 SW QD 040 NW QD R050 090 NE QD 090 SE QD 100 SW QD 080 NW QD R034 200 NE QD 200 SE QD 180 SW QD 160 NW QD
T096 213N 1451E 080 R064 030 NE QD 040 SE QD 030 SW QD 025 NW QD R050 070 NE QD 070 SE QD 060 SW QD 070 NW QD R034 200 NE QD 180 SE QD 160 SW QD 170 NW QD
T120 242N 1468E 070 R064 035 NE QD 035 SE QD 025 SW QD 020 NW QD R050 090 NE QD 090 SE QD 090 SW QD 070 NW QD R034 210 NE QD 180 SE QD 130 SW QD 160 NW QD
AMP
SUBJ: SUPER TYPHOON 04W (SINLAKU) WARNING NR 018
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 018
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
130600Z --- NEAR 12.7N 148.0E
MOVEMENT PAST SIX HOURS - 305 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON EYE FIXED BY A COMBINATION OF
SATELLITE AND RADAR
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 150 KT, GUSTS 180 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 070 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
135 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 240 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
185 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
REPEAT POSIT: 12.7N 148.0E
---
FORECASTS:
12 HRS, VALID AT:
131800Z --- 13.8N 146.8E
MAX SUSTAINED WINDS - 145 KT, GUSTS 175 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
210 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 320 DEG/ 06 KTS
---
24 HRS, VALID AT:
140600Z --- 14.7N 146.0E
MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 325 DEG/ 05 KTS
---
36 HRS, VALID AT:
141800Z --- 15.5N 145.4E
MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 325 DEG/ 05 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
150600Z --- 16.3N 144.8E
MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 350 DEG/ 06 KTS
---
72 HRS, VALID AT:
160600Z --- 18.5N 144.3E
MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 015 DEG/ 07 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
170600Z --- 21.3N 145.1E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 030 DEG/ 08 KTS
---
120 HRS, VALID AT:
180600Z --- 24.2N 146.8E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
---
REMARKS:
130900Z POSITION NEAR 13.0N 147.7E.
13APR26. SUPER TYPHOON 04W (SINLAKU), LOCATED APPROXIMATELY 203
NM EAST-SOUTHEAST OF NAVSTA GUAM, HAS TRACKED NORTHWESTWARD AT 09
KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 130600Z IS 903 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 130600Z IS 43 FEET. NEXT WARNINGS AT
131500Z, 132100Z, 140300Z AND 140900Z.
//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 81N1513E 65
0426041018 81N1513E 65
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041300 122N1488E 155
0426041306 127N1480E 150
0426041306 127N1480E 150
0426041306 127N1480E 150
NNNN

0000777500
00001

Original Message :

WTPQ30 RJTD 130600
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.20 FOR TY 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TY SINLAKU IS LOCATED AT 12.7N, 148.1E. INFORMATION ON THE CURRENT
POSITION IS BASED ON THE EYE IN ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS GOOD. CENTRAL PRESSURE IS
905HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 115KNOTS.
THE SYSTEM IS IN A NEUTRAL ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS, GOOD UPPER-LEVEL
OUTFLOW AND DRY AIR. THIS HAS CAUSED THE SYSTEM TO MAINTAIN ITS
INTENSITY OVER THE LAST SIX HOURS. INFORMATION ON THE CURRENT
INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND SURFACE
OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHWESTWARD ALONG THE SOUTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
SYSTEM HAS AN EYE. ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS
OF ANTICYCLONIC OUTFLOW. WATER VAPOR IMAGERY SHOWS DRY AIR IN THE
DIRECTION OF THE MOVEMENT. GCOM-W/AMSR2 89 GHZ MICROWAVE IMAGERY
SHOWS THE SYSTEM HAS AN EYE.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHWESTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT48. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH-NORTHEAST UNTIL FT120. THE TRACK
FORECAST IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP
MODELS. TRACK FORECAST CONFIDENCE IS FAIR BECAUSE ALL NWP MODELS
ARE IN CLOSE AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL WEAKEN UNTIL FT120 DUE TO THE INFLUENCE OF
INTERACTION WITH LOWER SSTS AND REDUCED TCHP. THE INTENSITY
FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ31 PGUM 130645
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 17A
National Weather Service Tiyan GU WP042026
445 PM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning remains in effect for Pagan and
Alamagan.
A Tropical Storm Watch remains in effect for Agrihan.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...12.7N 148.0E

About 210 miles east-southeast of Rota
About 220 miles east-southeast of Guam
About 225 miles southeast of Tinian
About 225 miles southeast of Saipan
About 370 miles south-southeast of Alamagan
About 405 miles south-southeast of Pagan
About 445 miles south-southeast of Agrihan

Maximum sustained winds...180 mph
Present movement...west-northwest...300 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Super Typhoon Sinlaku
was located by PGUA radar near Latitude 12.7 degrees North and
Longitude 148.0 degrees East. Sinlaku is moving northwest at
8 mph. It is expected to continue toward the northwest with
little change in forward speed through Tuesday. The onset of
tropical storm force winds are expected to reach Guam, Rota,
Tinian, and Saipan soon this evening or tonight. Typhoon force
winds are expected to start reaching Rota, Tinian, and Saipan
Tuesday or Tuesday afternoon. Latest JTWC forecast track still
maintains passage near or over Tinian and Saipan.

Maximum sustained winds remain at 180 mph. Sinlaku is forecast to
gradually weaken through the next several days, however, it is
still expected to cross the Marianas near or over Tinian and
Saipan as a Category 4 or Category 5 storm.

Typhoon force winds extend outward from the center up to
80 miles. Tropical storm force winds extend outward from the
center up to 275 miles to the northeast and up to 215 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 PM ChST this evening followed by an
intermediate advisory at 1100 PM ChST tonight.

$$

DeCou

Original Message :

WTPQ50 RJTD 130600
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 130600UTC 12.7N 148.1E GOOD
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 140600UTC 14.9N 145.9E 35NM 70%
MOVE NW 08KT
PRES 920HPA
MXWD 105KT
GUST 150KT
48HF 150600UTC 16.4N 144.6E 55NM 70%
MOVE NW SLOWLY
PRES 935HPA
MXWD 095KT
GUST 135KT
72HF 160600UTC 18.8N 143.9E 80NM 70%
MOVE NNW 06KT
PRES 945HPA
MXWD 085KT
GUST 120KT
96HF 170600UTC 21.3N 145.2E 100NM 70%
MOVE NNE 07KT
PRES 960HPA
MXWD 075KT
GUST 105KT
120HF 180600UTC 24.2N 146.8E 150NM 70%
MOVE NNE 08KT
PRES 970HPA
MXWD 065KT
GUST 095KT =

Original Message :

WTJP21 RJTD 130600
WARNING 130600.
WARNING VALID 140600.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 12.7N 148.1E MARIANAS MOVING NORTHWEST 09 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 140600UTC AT 14.9N 145.9E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 105 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 150600UTC AT 16.4N 144.6E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
FORECAST POSITION FOR 160600UTC AT 18.8N 143.9E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 170600UTC AT 21.3N 145.2E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.
FORECAST POSITION FOR 180600UTC AT 24.2N 146.8E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 130418
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 17
National Weather Service Tiyan GU WP042026
218 PM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
A Tropical Storm Warning has been issued for Pagan and Alamagan.
A Tropical Storm Watch has been issued for Agrihan.
The Tropical Storm Warning and Typhoon Watch for Ulul in Chuuk
State have been cancelled.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning is now in effect for Pagan and Alamagan.
A Tropical Storm Watch has been issued for Agrihan.
The Tropical Storm Warning and Typhoon Watch for Ulul in Chuuk
State have been cancelled.
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning is now in effect for Pagan and Alamagan.
A Tropical Storm Watch has been issued for Agrihan.

SUMMARY OF 200 PM CHST...0400 UTC...INFORMATION
-----------------------------------------------
Location...12.6N 148.2E

About 255 miles east-southeast of Rota
About 265 miles east-southeast of Guam
About 265 miles southeast of Tinian
About 265 miles southeast of Saipan
About 400 miles south-southeast of Alamagan
About 430 miles south-southeast of Pagan
About 475 miles south-southeast of Agrihan

Maximum sustained winds...180 mph
Present movement...west-northwest...300 degrees at 8 mph

DISCUSSION AND OUTLOOK
----------------------
At 200 PM CHST...0400 UTC...the center of Super Typhoon Sinlaku
was located by PGUA radar near Latitude 12.6 degrees North and
Longitude 148.2 degrees East. Sinlaku is moving west-northwest at 8
mph. It is expected to maintain this general course and speed with
a slight turn to the northwest through Tuesday. The onset of
tropical storm force winds are expected to reach Guam, Rota,
Tinian, and Saipan this evening or tonight. Typhoon force winds
are expected to start reaching Rota, Tinian, and Saipan Tuesday or
Tuesday afternoon. Latest JTWC forecast track has shifted the
storm path slightly northward, with passage still expected near or
over Tinian and Saipan.

Maximum sustained winds remain at 180 mph. Sinlaku is forecast to
gradually weaken through the next several days, still expecting to
cross the Marianas near or over Tinian and Saipan as a Category 4 or
Category 5 storm.

Typhoon force winds extend outward from the center up to 80
miles. Tropical storm force winds extend outward from the center
up to 275 miles to the northeast and up to 215 miles elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST this afternoon followed by the next
scheduled advisory at 800 PM ChST this evening.

$$

DeCou

Original Message :

WTJP31 RJTD 130300
WARNING 130300.
WARNING VALID 140300.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 12.5N 148.4E MARIANAS MOVING NORTHWEST 09 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 140300UTC AT 14.4N 145.8E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
905 HPA, MAX WINDS 115 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 130300
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 130300UTC 12.5N 148.4E GOOD
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 140300UTC 14.4N 145.8E 35NM 70%
MOVE NW 08KT
PRES 905HPA
MXWD 115KT
GUST 165KT
45HF 150000UTC 15.8N 144.6E 55NM 70%
MOVE NW SLOWLY
PRES 925HPA
MXWD 100KT
GUST 140KT
69HF 160000UTC 18.1N 143.4E 80NM 70%
MOVE NNW 06KT
PRES 935HPA
MXWD 090KT
GUST 130KT
93HF 170000UTC 20.6N 143.5E 100NM 70%
MOVE N 06KT
PRES 950HPA
MXWD 080KT
GUST 115KT
117HF 180000UTC 23.3N 144.5E 150NM 70%
MOVE NNE 07KT
PRES 965HPA
MXWD 070KT
GUST 100KT =

Original Message :

WTPN51 PGTW 130300
WARNING ATCG MIL 04W NWP 260413011514
2026041300 04W SINLAKU 017 01 315 08 SATL 015
T000 122N 1489E 155 R064 070 NE QD 070 SE QD 045 SW QD 055 NW QD R050 085 NE QD 090 SE QD 135 SW QD 090 NW QD R034 240 NE QD 180 SE QD 185 SW QD 180 NW QD
T012 132N 1476E 150 R064 070 NE QD 060 SE QD 040 SW QD 060 NW QD R050 100 NE QD 090 SE QD 100 SW QD 090 NW QD R034 230 NE QD 210 SE QD 170 SW QD 190 NW QD
T024 142N 1465E 140 R064 060 NE QD 050 SE QD 040 SW QD 060 NW QD R050 100 NE QD 100 SE QD 100 SW QD 100 NW QD R034 230 NE QD 210 SE QD 180 SW QD 190 NW QD
T036 151N 1457E 125 R064 060 NE QD 050 SE QD 040 SW QD 050 NW QD R050 100 NE QD 100 SE QD 110 SW QD 100 NW QD R034 220 NE QD 200 SE QD 180 SW QD 190 NW QD
T048 160N 1451E 115 R064 060 NE QD 060 SE QD 040 SW QD 050 NW QD R050 100 NE QD 100 SE QD 110 SW QD 090 NW QD R034 220 NE QD 200 SE QD 180 SW QD 190 NW QD
T072 182N 1442E 100 R064 060 NE QD 060 SE QD 040 SW QD 050 NW QD R050 100 NE QD 100 SE QD 100 SW QD 090 NW QD R034 210 NE QD 200 SE QD 180 SW QD 170 NW QD
T096 206N 1446E 085 R064 040 NE QD 050 SE QD 040 SW QD 040 NW QD R050 080 NE QD 080 SE QD 080 SW QD 080 NW QD R034 200 NE QD 190 SE QD 170 SW QD 170 NW QD
T120 236N 1458E 070 R064 035 NE QD 035 SE QD 035 SW QD 035 NW QD R050 080 NE QD 080 SE QD 080 SW QD 080 NW QD R034 200 NE QD 190 SE QD 170 SW QD 170 NW QD
AMP
SUBJ: SUPER TYPHOON 04W (SINLAKU) WARNING NR 017
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 017
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
130000Z --- NEAR 12.2N 148.9E
MOVEMENT PAST SIX HOURS - 315 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 015 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 155 KT, GUSTS 190 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 070 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
135 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 240 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
185 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
REPEAT POSIT: 12.2N 148.9E
---
FORECASTS:
12 HRS, VALID AT:
131200Z --- 13.2N 147.6E
MAX SUSTAINED WINDS - 150 KT, GUSTS 180 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 070 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
210 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 315 DEG/ 07 KTS
---
24 HRS, VALID AT:
140000Z --- 14.2N 146.5E
MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
210 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 320 DEG/ 06 KTS
---
36 HRS, VALID AT:
141200Z --- 15.1N 145.7E
MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 325 DEG/ 05 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
150000Z --- 16.0N 145.1E
MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 340 DEG/ 06 KTS
---
72 HRS, VALID AT:
160000Z --- 18.2N 144.2E
MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 010 DEG/ 06 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
170000Z --- 20.6N 144.6E
MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 020 DEG/ 08 KTS
---
120 HRS, VALID AT:
180000Z --- 23.6N 145.8E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
---
REMARKS:
130300Z POSITION NEAR 12.5N 148.6E.
13APR26. SUPER TYPHOON 04W (SINLAKU), LOCATED APPROXIMATELY 262
NM EAST-SOUTHEAST OF NAVSTA GUAM, HAS TRACKED NORTHWESTWARD AT 08
KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 130000Z IS 897 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 130000Z IS 43 FEET. NEXT WARNINGS AT
130900Z, 131500Z, 132100Z AND 140300Z.//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 81N1513E 65
0426041018 81N1513E 65
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041218 116N1495E 160
0426041300 122N1489E 155
0426041300 122N1489E 155
0426041300 122N1489E 155
NNNN

Original Message :

WTPQ30 RJTD 130000
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.19 FOR TY 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TY SINLAKU IS LOCATED AT 12.2N, 148.8E. INFORMATION ON THE CURRENT
POSITION IS BASED ON THE EYE IN ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS GOOD. CENTRAL PRESSURE IS
905HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 115KNOTS.
THE SYSTEM IS IN A NEUTRAL ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS, GOOD UPPER-LEVEL
OUTFLOW AND DRY AIR. THIS HAS CAUSED THE SYSTEM TO MAINTAIN ITS
INTENSITY OVER THE LAST SIX HOURS. INFORMATION ON THE CURRENT
INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND SURFACE
OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHWESTWARD ALONG THE SOUTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
SYSTEM HAS AN EYE. ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS
OF ANTICYCLONIC OUTFLOW. WATER VAPOR IMAGERY SHOWS DRY AIR IN THE
DIRECTION OF THE MOVEMENT. DMSP-F18/SSMIS 89 GHZ MICROWAVE IMAGERY
SHOWS THE SYSTEM HAS AN EYE.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHWESTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT48. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH-NORTHEAST UNTIL FT120. THE TRACK
FORECAST IS BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP
MODELS. TRACK FORECAST CONFIDENCE IS FAIR BECAUSE ALL NWP MODELS
ARE IN CLOSE AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL MAINTAIN ITS INTENSITY UNTIL FT24 DUE TO THE
INFLUENCE OF INTERACTION WITH HIGH SSTS, HIGH TCHP, WEAK VWS AND
DRY AIR. THE SYSTEM WILL THEN WEAKEN UNTIL FT120 DUE TO THE
INFLUENCE OF INTERACTION WITH LOWER SSTS AND REDUCED TCHP. THE
INTENSITY FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA
INCLUDING GSM.
=

Original Message :

WTPQ31 PGUM 130047
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 16A
National Weather Service Tiyan GU WP042026
1047 AM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Ulul in Chuuk State.
A Tropical Storm Watch remains in effect for Pagan and Alamagan.

Residents of Agrihan should carefully monitor the progress of Super
Typhoon Sinlaku.

SUMMARY OF 1000 AM CHST...0000 UTC...INFORMATION
-----------------------------------------------
Location...12.2N 148.9E

About 255 miles north of Ulul
About 280 miles east-southeast of Rota
About 290 miles east-southeast of Guam
About 290 miles southeast of Tinian
About 295 miles southeast of Saipan
About 385 miles north-northwest of Chuuk
About 460 miles south-southeast of Pagan

Maximum sustained winds...180 mph
Present movement...northwest...305 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 AM CHST...0000 UTC...the center of Super Typhoon Sinlaku was
located near Latitude 12.2 degrees North and Longitude 148.9 degrees
East. Sinlaku is moving northwest at 9 mph. It is expected to
maintain this general course and speed through Tuesday. The onset of
tropical storm force winds are expected to reach Guam, Rota, Tinian,
and Saipan this evening or tonight. Typhoon force winds are expected
to start reaching Rota, Tinian, and Saipan Tuesday or Tuesday
afternoon. Latest JTWC forecast track has shifted the storm path
slightly southward, with passage still expected near or over Tinian
and Saipan.

Maximum sustained winds remain at 180 mph. Sinlaku is forecast to
gradually weaken through the next several days, still expecting to
cross the Marianas near or over Tinian and Saipan as a Category 4 or
Category 5 storm.

Typhoon force winds extend outward from the center up to 60 miles.
Tropical storm force winds extend outward from the center up to 275
miles to the northeast and up to 215 miles elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST followed by an intermediate
advisory at 500 PM ChST.

$$

DeCou

Original Message :

WTPQ50 RJTD 130000
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 130000UTC 12.2N 148.8E GOOD
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 140000UTC 14.3N 146.0E 35NM 70%
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
48HF 150000UTC 15.8N 144.6E 55NM 70%
MOVE NW SLOWLY
PRES 925HPA
MXWD 100KT
GUST 140KT
72HF 160000UTC 18.1N 143.4E 80NM 70%
MOVE NNW 06KT
PRES 935HPA
MXWD 090KT
GUST 130KT
96HF 170000UTC 20.6N 143.5E 100NM 70%
MOVE N 06KT
PRES 950HPA
MXWD 080KT
GUST 115KT
120HF 180000UTC 23.3N 144.5E 150NM 70%
MOVE NNE 07KT
PRES 965HPA
MXWD 070KT
GUST 100KT =

Original Message :

WTJP21 RJTD 130000
WARNING 130000.
WARNING VALID 140000.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 12.2N 148.8E MARIANAS MOVING NORTHWEST 09 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 140000UTC AT 14.3N 146.0E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
905 HPA, MAX WINDS 115 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 150000UTC AT 15.8N 144.6E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 160000UTC AT 18.1N 143.4E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 90 KNOTS NEAR CENTER.
FORECAST POSITION FOR 170000UTC AT 20.6N 143.5E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.
FORECAST POSITION FOR 180000UTC AT 23.3N 144.5E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 122100
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 122100UTC 11.9N 149.2E GOOD
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 132100UTC 14.1N 146.3E 35NM 70%
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
45HF 141800UTC 15.6N 144.9E 55NM 70%
MOVE NW 06KT
PRES 915HPA
MXWD 105KT
GUST 150KT
69HF 151800UTC 17.6N 143.8E 80NM 70%
MOVE NNW 06KT
PRES 925HPA
MXWD 095KT
GUST 135KT
93HF 161800UTC 20.3N 143.9E 100NM 70%
MOVE N 07KT
PRES 945HPA
MXWD 085KT
GUST 120KT
117HF 171800UTC 22.9N 145.2E 150NM 70%
MOVE NNE 07KT
PRES 965HPA
MXWD 070KT
GUST 100KT =

Original Message :

WTJP31 RJTD 122100
WARNING 122100.
WARNING VALID 132100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 11.9N 149.2E MARIANAS MOVING NORTHWEST 09 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 132100UTC AT 14.1N 146.3E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
905 HPA, MAX WINDS 115 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 122126
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 16
National Weather Service Tiyan GU WP042026
726 AM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Guam.
A Tropical Storm Warning and Typhoon Watch remain in effect for
Ulul in Chuuk State.
A Tropical Storm Watch remains in effect for Pagan and Alamagan.

Residents of Agrihan should carefully monitor the progress of Super
Typhoon Sinlaku.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...11.9N 149.1E

About 230 miles north of Ulul
About 305 miles east-southeast of Rota
About 310 miles east-southeast of Guam
About 315 miles southeast of Tinian
About 315 miles southeast of Saipan
About 360 miles north-northwest of Chuuk
About 450 miles south-southeast of Alamagan
About 485 miles south-southeast of Pagan

Maximum sustained winds...180 mph
Present movement...northwest...305 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Super Typhoon Sinlaku
was located near Latitude 11.9 degrees North and Longitude
149.1 degrees East. Sinlaku is moving northwest at 9 mph. It is
expected to maintain this general course and speed through
Tuesday. The onset of tropical storm force winds are expected to
reach Guam, Rota, Tinian, and Saipan this evening or tonight. Typhoon
force winds are expected to start reaching Rota, Tinian, and Saipan
Tuesday or Tuesday afternoon. Latest forecast track has shifted the
storm path slightly southward, with passage still expected near or
over Tinian and Saipan.

Maximum sustained winds have increased to 180 mph. Sinlaku is
forecast to gradually weaken through the next several days.

Typhoon force winds extend outward from the center up to
60 miles. Tropical storm force winds extend outward from the
center up to 275 miles to the northeast and up to 215 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST followed by the next scheduled advisory
at 200 PM ChST.

$$

DeCou

Original Message :

WTPQ30 RJTD 121800
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.18 FOR TY 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TY SINLAKU IS LOCATED AT 11.6N, 149.5E. INFORMATION ON THE CURRENT
POSITION IS BASED ON THE EYE IN ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS GOOD. CENTRAL PRESSURE IS
905HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 115KNOTS.
THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD UPPER-LEVEL
OUTFLOW. THIS HAS CAUSED THE SYSTEM TO DEVELOP OVER THE LAST SIX
HOURS. IT HAS ALSO DEVELOPED RAPIDLY OVER THE LAST 12 HOURS.
INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY
ANALYSES AND SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHWESTWARD ALONG THE SOUTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
SYSTEM HAS AN EYE. ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS
OF ANTICYCLONIC OUTFLOW. WATER VAPOR IMAGERY SHOWS DRY AIR IN THE
DIRECTION OF THE MOVEMENT. NOAA-20/ATMS 85 GHZ MICROWAVE IMAGERY
SHOWS THE SYSTEM HAS AN EYE.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHWESTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT48. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH UNTIL FT120. THE TRACK FORECAST IS
BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS. TRACK
FORECAST CONFIDENCE IS HIGH BECAUSE ALL NWP MODELS ARE IN CLOSE
AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL MAINTAIN ITS INTENSITY UNTIL FT24 DUE TO THE
INFLUENCE OF INTERACTION WITH HIGH SSTS, HIGH TCHP, WEAK VWS AND
DRY AIR. THE SYSTEM WILL THEN WEAKEN UNTIL FT48 DUE TO THE
INFLUENCE OF DRY AIR. THE SYSTEM WILL THEN WEAKEN UNTIL FT120 DUE
TO THE INFLUENCE OF INTERACTION WITH LOWER SSTS AND REDUCED TCHP.
THE INTENSITY FORECAST IS BASED ON A CONSENSUS OF GUIDANCE DATA
INCLUDING GSM.
=

Original Message :

WTPQ31 PGUM 121900
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 15A
National Weather Service Tiyan GU WP042026
500 AM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING NORTH-NORTHWEST...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
Tropical Storm Warning and Typhoon Watch remains in effect for Guam.
A Tropical Storm Warning and Typhoon Watch remains in effect for Ulul
in Chuuk State.
A Tropical Storm Watch remains in effect for Pagan and Alamagan.

Residents of Agrihan should carefully monitor the progress of Super
Typhoon Sinlaku.

SUMMARY OF 400 AM CHST...1800 UTC...INFORMATION
-----------------------------------------------
Location...11.7N 149.5E

About 215 miles north of Ulul
About 285 miles northwest of Fananu
About 335 miles north-northwest of Chuuk
About 335 miles east-southeast of Rota
About 340 miles east-southeast of Guam
About 345 miles southeast of Tinian
About 345 miles southeast of Saipan

Maximum sustained winds...175 mph
Present movement...north-northwest...335 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 400 AM CHST...1800 UTC...the center of Super Typhoon Sinlaku was
located near Latitude 11.7 degrees North and Longitude 149.5 degrees
East. Sinlaku is moving north-northwest at 10 mph. It is expected to
make a slight turn toward the northwest with little change in forward
speed through Tuesday. The onset of tropical storm force winds are
expected to reach Guam, Rota, Tinian, and Saipan this evening or
tonight. Typhoon force winds are expected to start reaching Rota,
Tinian, and Saipan Tuesday or Tuesday afternoon. Latest track has
continued the slight northward shift in the storm path, with passage
near or over Tinian and Saipan.

Maximum sustained winds remain at 175 mph. Sinlaku is forecast to
maintain this intensity through Tuesday. Sinlaku may move into the
Marianas as a category 4 or 5 typhoon.

Typhoon force winds extend outward from the center up to 60 miles.
Tropical storm force winds extend outward from the center up to 275
miles to the northeast and up to 215 miles elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service in Tiyan at 800 AM ChST this morning followed by an
intermediate advisory at 1100 AM ChST late this morning.

$$

Schank

Original Message :

WTJP21 RJTD 121800
WARNING 121800.
WARNING VALID 131800.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 905 HPA
AT 11.6N 149.5E MARIANAS MOVING NORTHWEST 09 KNOTS.
POSITION GOOD.
MAX WINDS 115 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 90 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 131800UTC AT 13.9N 146.5E WITH 35 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
905 HPA, MAX WINDS 115 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 141800UTC AT 15.6N 144.9E WITH 55 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
915 HPA, MAX WINDS 105 KNOTS NEAR CENTER.
FORECAST POSITION FOR 151800UTC AT 17.6N 143.8E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
FORECAST POSITION FOR 161800UTC AT 20.3N 143.9E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 171800UTC AT 22.9N 145.2E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 121800
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 121800UTC 11.6N 149.5E GOOD
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
50KT 90NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 131800UTC 13.9N 146.5E 35NM 70%
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
48HF 141800UTC 15.6N 144.9E 55NM 70%
MOVE NW 06KT
PRES 915HPA
MXWD 105KT
GUST 150KT
72HF 151800UTC 17.6N 143.8E 80NM 70%
MOVE NNW 06KT
PRES 925HPA
MXWD 095KT
GUST 135KT
96HF 161800UTC 20.3N 143.9E 100NM 70%
MOVE N 07KT
PRES 945HPA
MXWD 085KT
GUST 120KT
120HF 171800UTC 22.9N 145.2E 150NM 70%
MOVE NNE 07KT
PRES 965HPA
MXWD 070KT
GUST 100KT =

Original Message :

WTJP31 RJTD 121500
WARNING 121500.
WARNING VALID 131500.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 910 HPA
AT 11.3N 149.9E MARIANAS MOVING NORTHNORTHWEST 08 KNOTS.
POSITION GOOD.
MAX WINDS 110 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 80 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 131500UTC AT 13.6N 147.1E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
905 HPA, MAX WINDS 115 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 121500
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 121500UTC 11.3N 149.9E GOOD
MOVE NNW 08KT
PRES 910HPA
MXWD 110KT
GUST 155KT
50KT 80NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 131500UTC 13.6N 147.1E 42NM 70%
MOVE NW 09KT
PRES 905HPA
MXWD 115KT
GUST 165KT
45HF 141200UTC 15.2N 145.4E 70NM 70%
MOVE NW 07KT
PRES 910HPA
MXWD 110KT
GUST 155KT
69HF 151200UTC 17.2N 144.4E 80NM 70%
MOVE NNW 06KT
PRES 925HPA
MXWD 100KT
GUST 140KT
93HF 161200UTC 19.8N 144.2E 100NM 70%
MOVE N 07KT
PRES 935HPA
MXWD 090KT
GUST 130KT
117HF 171200UTC 22.6N 145.8E 120NM 70%
MOVE NNE 08KT
PRES 960HPA
MXWD 075KT
GUST 105KT =

Original Message :

WTPQ31 PGUM 121518
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 15
National Weather Service Tiyan GU WP042026
118 AM ChST Mon Apr 13 2026

...SUPER TYPHOON SINLAKU MOVING NORTH-NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
The Typhoon Warning for Fananu in Chuuk State cancelled.

WATCHES AND WARNINGS
--------------------
The Typhoon Warning for Fananu in Chuuk State cancelled.
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
Tropical Storm Warning and Typhoon Watch remains in effect for Guam.
A Tropical Storm Warning and Typhoon Watch remains in effect for Ulul
in Chuuk State.
A Tropical Storm Watch remains in effect for Pagan and Alamagan.

Residents of Agrihan should carefully monitor the progress of Super
Typhoon Sinlaku.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...11.4N 149.9E

About 195 miles north of Ulul
About 250 miles northwest of Fananu
About 300 miles north-northwest of Chuuk
About 365 miles east-southeast of Rota
About 375 miles east-southeast of Guam
About 380 miles southeast of Tinian
About 380 miles southeast of Saipan

Maximum sustained winds...175 mph
Present movement...north-northwest...335 degrees at 10 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Super Typhoon Sinlaku was
located near Latitude 11.4 degrees North and Longitude 149.9 degrees
East. Sinlaku is moving north-northwest at 10 mph. It is expected to
make a slight turn toward the northwest with little change in forward
speed through Tuesday. The onset of tropical storm force winds are
expected to reach Guam, Rota, Tinian, and Saipan this evening or
tonight. Typhoon force winds are expected to start reaching Rota,
Tinian, and Saipan Tuesday or Tuesday afternoon. Latest track has
continued the slight northward shift in the storm path, with passage
near or over Tinian and Saipan.

Maximum sustained winds have increased to 175 mph. Sinlaku is
forecast to maintain this intensity through Tuesday. Sinlaku may move
into the Marianas as a category 4 or 5 typhoon.

Typhoon force winds extend outward from the center up to 60 miles.
Tropical storm force winds extend outward from the center up to 275
miles to the northeast and up to 215 miles elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST this morning followed by the next scheduled
advisory at 800 AM ChST this morning.

$$

Schank

Original Message :

WTPN51 PGTW 121500
WARNING ATCG MIL 04W NWP 260412140752
2026041212 04W SINLAKU 015 01 335 09 SATL 020
T000 111N 1502E 150 R064 040 NE QD 050 SE QD 030 SW QD 035 NW QD R050 085 NE QD 090 SE QD 105 SW QD 100 NW QD R034 240 NE QD 180 SE QD 185 SW QD 180 NW QD
T012 122N 1490E 150 R064 050 NE QD 040 SE QD 030 SW QD 040 NW QD R050 100 NE QD 080 SE QD 080 SW QD 090 NW QD R034 220 NE QD 200 SE QD 160 SW QD 190 NW QD
T024 133N 1477E 145 R064 050 NE QD 040 SE QD 030 SW QD 040 NW QD R050 100 NE QD 080 SE QD 070 SW QD 090 NW QD R034 220 NE QD 210 SE QD 160 SW QD 190 NW QD
T036 143N 1465E 140 R064 040 NE QD 040 SE QD 040 SW QD 040 NW QD R050 100 NE QD 090 SE QD 080 SW QD 090 NW QD R034 220 NE QD 200 SE QD 170 SW QD 190 NW QD
T048 153N 1457E 135 R064 050 NE QD 050 SE QD 040 SW QD 050 NW QD R050 100 NE QD 090 SE QD 080 SW QD 090 NW QD R034 210 NE QD 200 SE QD 170 SW QD 190 NW QD
T072 174N 1447E 125 R064 060 NE QD 050 SE QD 040 SW QD 050 NW QD R050 100 NE QD 090 SE QD 090 SW QD 090 NW QD R034 210 NE QD 200 SE QD 170 SW QD 170 NW QD
T096 198N 1446E 105 R064 050 NE QD 040 SE QD 030 SW QD 050 NW QD R050 090 NE QD 090 SE QD 080 SW QD 090 NW QD R034 200 NE QD 200 SE QD 170 SW QD 170 NW QD
T120 226N 1454E 080 R064 040 NE QD 030 SE QD 030 SW QD 050 NW QD R050 070 NE QD 080 SE QD 060 SW QD 070 NW QD R034 220 NE QD 200 SE QD 160 SW QD 200 NW QD
AMP
SUBJ: SUPER TYPHOON 04W (SINLAKU) WARNING NR 015
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 015
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
121200Z --- NEAR 11.1N 150.2E
MOVEMENT PAST SIX HOURS - 335 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 150 KT, GUSTS 180 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
105 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 240 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
185 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
REPEAT POSIT: 11.1N 150.2E
---
FORECASTS:
12 HRS, VALID AT:
130000Z --- 12.2N 149.0E
MAX SUSTAINED WINDS - 150 KT, GUSTS 180 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 310 DEG/ 08 KTS
---
24 HRS, VALID AT:
131200Z --- 13.3N 147.7E
MAX SUSTAINED WINDS - 145 KT, GUSTS 175 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
210 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 310 DEG/ 08 KTS
---
36 HRS, VALID AT:
140000Z --- 14.3N 146.5E
MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 320 DEG/ 06 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
141200Z --- 15.3N 145.7E
MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 335 DEG/ 06 KTS
---
72 HRS, VALID AT:
151200Z --- 17.4N 144.7E
MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 360 DEG/ 06 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
161200Z --- 19.8N 144.6E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 015 DEG/ 07 KTS
---
120 HRS, VALID AT:
171200Z --- 22.6N 145.4E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
200 NM NORTHWEST QUADRANT
---
REMARKS:
121500Z POSITION NEAR 11.4N 149.9E.
12APR26. SUPER TYPHOON 04W (SINLAKU), LOCATED APPROXIMATELY 356
NM EAST-SOUTHEAST OF NAVSTA GUAM, HAS TRACKED NORTH-NORTHWESTWARD
AT 09 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 121200Z IS 902 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 121200Z IS 38 FEET. NEXT WARNINGS AT
122100Z, 130300Z, 130900Z AND 131500Z.
//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 81N1513E 65
0426041018 81N1513E 65
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041212 111N1502E 150
0426041212 111N1502E 150
0426041212 111N1502E 150
NNNN

Original Message :

WTPQ30 RJTD 121200
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.17 FOR TY 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TY SINLAKU IS LOCATED AT 11.0N, 150.3E. INFORMATION ON THE CURRENT
POSITION IS BASED ON THE EYE IN ANIMATED MSI AND SURFACE
OBSERVATIONS. POSITIONAL ACCURACY IS GOOD. CENTRAL PRESSURE IS
920HPA AND MAXIMUM SUSTAINED WINDS NEAR THE CENTER ARE 105KNOTS.
THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT UNDER THE
INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD UPPER-LEVEL
OUTFLOW. THIS HAS CAUSED THE SYSTEM TO DEVELOP OVER THE LAST SIX
HOURS. IT HAS ALSO DEVELOPED RAPIDLY OVER THE LAST 12 HOURS.
INFORMATION ON THE CURRENT INTENSITY IS BASED ON DVORAK INTENSITY
ANALYSES AND SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTH-NORTHWESTWARD ALONG THE SOUTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS THE
SYSTEM HAS AN EYE. ANIMATED MSI SHOWS GOOD CLOUD CHARACTERISTICS
OF ANTICYCLONIC OUTFLOW.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHWESTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT48. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH UNTIL FT120. THE TRACK FORECAST IS
BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS. TRACK
FORECAST CONFIDENCE IS HIGH BECAUSE ALL NWP MODELS ARE IN CLOSE
AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL DEVELOP UNTIL FT24 DUE TO THE INFLUENCE OF
INTERACTION WITH HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD
UPPER-LEVEL OUTFLOW. THE SYSTEM WILL THEN MAINTAIN ITS INTENSITY
UNTIL FT48 DUE TO THE INFLUENCE OF INTERACTION WITH HIGH SSTS,
HIGH TCHP, WEAK VWS AND DRY AIR. THE SYSTEM WILL THEN WEAKEN UNTIL
FT120 DUE TO THE INFLUENCE OF INTERACTION WITH LOWER SSTS AND
REDUCED TCHP. THE INTENSITY FORECAST IS BASED ON A CONSENSUS OF
GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ50 RJTD 121200
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 121200UTC 11.0N 150.3E GOOD
MOVE NNW 08KT
PRES 920HPA
MXWD 105KT
GUST 150KT
50KT 80NM
30KT 325NM NORTHEAST 270NM SOUTHWEST
FORECAST
24HF 131200UTC 13.3N 147.3E 42NM 70%
MOVE NW 09KT
PRES 910HPA
MXWD 110KT
GUST 155KT
48HF 141200UTC 15.2N 145.4E 70NM 70%
MOVE NW 07KT
PRES 910HPA
MXWD 110KT
GUST 155KT
72HF 151200UTC 17.2N 144.4E 80NM 70%
MOVE NNW 06KT
PRES 925HPA
MXWD 100KT
GUST 140KT
96HF 161200UTC 19.8N 144.2E 100NM 70%
MOVE N 07KT
PRES 935HPA
MXWD 090KT
GUST 130KT
120HF 171200UTC 22.6N 145.8E 120NM 70%
MOVE NNE 08KT
PRES 960HPA
MXWD 075KT
GUST 105KT =

Original Message :

WTJP21 RJTD 121200
WARNING 121200.
WARNING VALID 131200.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 920 HPA
AT 11.0N 150.3E SEA NORTH OF TRUKS MOVING NORTHNORTHWEST 08 KNOTS.
POSITION GOOD.
MAX WINDS 105 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 80 MILES.
RADIUS OF OVER 30 KNOT WINDS 325 MILES NORTHEAST SEMICIRCLE AND 270
MILES ELSEWHERE.
FORECAST POSITION FOR 131200UTC AT 13.3N 147.3E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
910 HPA, MAX WINDS 110 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 141200UTC AT 15.2N 145.4E WITH 70 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
910 HPA, MAX WINDS 110 KNOTS NEAR CENTER.
FORECAST POSITION FOR 151200UTC AT 17.2N 144.4E WITH 80 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 161200UTC AT 19.8N 144.2E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 90 KNOTS NEAR CENTER.
FORECAST POSITION FOR 171200UTC AT 22.6N 145.8E WITH 120 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 121229
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Intermediate Advisory Number 14A
National Weather Service Tiyan GU WP042026
1029 PM ChST Sun Apr 12 2026

...SUPER TYPHOON SINLAKU MOVING NORTHWEST TOWARD THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Guam.
A Tropical Storm Warning remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam.
A Tropical Storm Watch remains in effect for Pagan and Alamagan.

Residents of Agrihan should carefully monitor the progress of
Super Typhoon Sinlaku.

SUMMARY OF 1000 PM CHST...1200 UTC...INFORMATION
-----------------------------------------------
Location...11.1N 150.2E

About 175 miles north of Ulul
About 220 miles northwest of Fananu
About 275 miles north-northwest of Chuuk
About 395 miles east-southeast of Rota
About 400 miles east-southeast of Guam
About 410 miles southeast of Tinian
About 410 miles southeast of Saipan

Maximum sustained winds...150 mph
Present movement...northwest...310 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CHST...1200 UTC...the center of Super Typhoon Sinlaku
was located near Latitude 11.1 degrees North and Longitude
150.2 degrees East. Sinlaku is moving northwest at 9 mph. It is
expected to maintain this general course and speed through Monday
night as it heads towards the Marianas. The onset of tropical storm
force winds are expected to reach Guam, Rota, Tinian, and Saipan
Monday evening or Monday night. Typhoon force winds are expected to
start reaching Rota, Tinian, and Saipan Tuesday.

Maximum sustained winds remain at 150 mph. Sinlaku is forecast to
intensify through Monday.

Typhoon force winds extend outward from the center up to
60 miles. Tropical storm force winds extend outward from the
center up to 245 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Monday morning followed by
an intermediate advisory at 500 AM ChST Monday morning.

$$

Schank

Original Message :

WTJP31 RJTD 120900
WARNING 120900.
WARNING VALID 130900.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 935 HPA
AT 10.5N 150.6E SEA NORTH OF TRUKS MOVING NORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 100 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 80 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 130900UTC AT 13.0N 147.6E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
915 HPA, MAX WINDS 105 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 120900
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 120900UTC 10.5N 150.6E GOOD
MOVE NW 07KT
PRES 935HPA
MXWD 100KT
GUST 140KT
50KT 80NM
30KT 300NM NORTHEAST 210NM SOUTHWEST
FORECAST
24HF 130900UTC 13.0N 147.6E 50NM 70%
MOVE NW 10KT
PRES 915HPA
MXWD 105KT
GUST 150KT
45HF 140600UTC 14.8N 145.4E 85NM 70%
MOVE NW 08KT
PRES 925HPA
MXWD 100KT
GUST 140KT
69HF 150600UTC 16.5N 144.4E 100NM 70%
MOVE NNW SLOWLY
PRES 935HPA
MXWD 095KT
GUST 135KT
93HF 160600UTC 18.8N 143.8E 125NM 70%
MOVE N 06KT
PRES 945HPA
MXWD 085KT
GUST 120KT
117HF 170600UTC 21.6N 144.5E 150NM 70%
MOVE N 07KT
PRES 960HPA
MXWD 075KT
GUST 105KT =

Original Message :

WTPQ31 PGUM 120930
TCPPQ1

BULLETIN
Super Typhoon Sinlaku (04W) Advisory Number 14
National Weather Service Tiyan GU WP042026
730 PM ChST Sun Apr 12 2026

...SINLAKU UPGRADED TO SUPER TYPHOON AND IS MOVING NORTHWEST TOWARD
THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
Sinlaku is now a super typhoon.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Guam.
A Tropical Storm Warning remains in effect for Ulul in Chuuk State.
A Tropical Storm Watch remains in effect for Pagan and Alamagan.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam.

Residents of Agrihan should carefully monitor the progress of
Super Typhoon Sinlaku.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...10.6N 150.3E

About 145 miles north-northeast of Ulul
About 190 miles northwest of Fananu
About 240 miles north-northwest of Chuuk
About 420 miles east-southeast of Guam
About 420 miles southeast of Rota
About 435 miles southeast of Tinian
About 440 miles southeast of Saipan

Maximum sustained winds...150 mph
Present movement...northwest...310 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Super Typhoon Sinlaku
was located near Latitude 10.6 degrees North and Longitude
150.3 degrees East. Sinlaku is moving northwest at 9 mph. It is
expected to maintain this general course and speed through
through Monday night as it heads towards the Marianas. The onset
of tropical storm force winds are expected to reach Guam,
Rota, Tinian, and Saipan Monday night. Typhoon force winds are
expected to start reaching Rota, Tinian, and Saipan Tuesday.

Maximum sustained winds have increased to 150 mph. Sinlaku is
forecast to intensify through Monday. Sinlaku may move into the
Marianas as a category 4 or 5 typhoon.

Typhoon force winds extend outward from the center up to
60 miles. Tropical storm force winds extend outward from the
center up to 245 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST tonight followed by the next scheduled
advisory at 200 AM ChST early Monday morning.

$$

Schank

Original Message :

WTPN51 PGTW 120900
WARNING ATCG MIL 04W NWP 260412075544
2026041206 04W SINLAKU 014 01 310 08 SATL 015
T000 103N 1506E 130 R064 040 NE QD 050 SE QD 030 SW QD 035 NW QD R050 085 NE QD 090 SE QD 105 SW Q
D 100 NW QD R034 215 NE QD 180 SE QD 200 SW QD 180 NW QD
T012 115N 1494E 140 R064 050 NE QD 040 SE QD 030 SW QD 040 NW QD R050 090 NE QD 080 SE QD 080 SW Q
D 090 NW QD R034 210 NE QD 190 SE QD 170 SW QD 180 NW QD
T024 125N 1482E 140 R064 050 NE QD 040 SE QD 030 SW QD 040 NW QD R050 100 NE QD 080 SE QD 080 SW Q
D 090 NW QD R034 210 NE QD 200 SE QD 170 SW QD 190 NW QD
T036 136N 1468E 135 R064 050 NE QD 040 SE QD 030 SW QD 040 NW QD R050 100 NE QD 080 SE QD 080 SW Q
D 090 NW QD R034 210 NE QD 200 SE QD 170 SW QD 180 NW QD
T048 146N 1457E 130 R064 040 NE QD 040 SE QD 040 SW QD 040 NW QD R050 100 NE QD 090 SE QD 090 SW Q
D 090 NW QD R034 200 NE QD 200 SE QD 180 SW QD 180 NW QD
T072 166N 1446E 120 R064 050 NE QD 050 SE QD 040 SW QD 040 NW QD R050 100 NE QD 100 SE QD 090 SW Q
D 090 NW QD R034 200 NE QD 200 SE QD 180 SW QD 170 NW QD
T096 189N 1442E 100 R064 060 NE QD 060 SE QD 040 SW QD 040 NW QD R050 100 NE QD 100 SE QD 090 SW Q
D 090 NW QD R034 190 NE QD 200 SE QD 180 SW QD 160 NW QD
T120 217N 1450E 080 R064 060 NE QD 060 SE QD 040 SW QD 040 NW QD R050 100 NE QD 100 SE QD 090 SW Q
D 090 NW QD R034 225 NE QD 225 SE QD 180 SW QD 160 NW QD
AMP
SUBJ: SUPER TYPHOON 04W (SINLAKU) WARNING NR 014
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 014
UPGRADED FROM TYPHOON 04W
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
120600Z --- NEAR 10.3N 150.6E
MOVEMENT PAST SIX HOURS - 310 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 015 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
105 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 215 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
REPEAT POSIT: 10.3N 150.6E
---
FORECASTS:
12 HRS, VALID AT:
121800Z --- 11.5N 149.4E
MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 310 DEG/ 08 KTS
---
24 HRS, VALID AT:
130600Z --- 12.5N 148.2E
MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 310 DEG/ 09 KTS
---
36 HRS, VALID AT:
131800Z --- 13.6N 146.8E
MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 315 DEG/ 07 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
140600Z --- 14.6N 145.7E
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 330 DEG/ 06 KTS
---
72 HRS, VALID AT:
150600Z --- 16.6N 144.6E
MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 350 DEG/ 06 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
160600Z --- 18.9N 144.2E
MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 015 DEG/ 07 KTS
---
120 HRS, VALID AT:
170600Z --- 21.7N 145.0E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 225 NM NORTHEAST QUADRANT
225 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
---
REMARKS:
120900Z POSITION NEAR 10.6N 150.3E.
12APR26. SUPER TYPHOON 04W (SINLAKU), LOCATED APPROXIMATELY 398
NM EAST-SOUTHEAST OF NAVSTA GUAM, HAS TRACKED NORTHWESTWARD AT 08
KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 120600Z IS 921 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 120600Z IS 36 FEET. NEXT WARNINGS AT
121500Z, 122100Z, 130300Z AND 130900Z.
//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 81N1513E 65
0426041018 81N1513E 65
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041100 85N1516E 75
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041106 88N1516E 80
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041112 89N1514E 85
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041118 92N1514E 95
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041200 98N1512E 115
0426041206 103N1506E 130
0426041206 103N1506E 130
0426041206 103N1506E 130

Original Message :

WTPN31 PGTW 120900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SUPER TYPHOON 04W (SINLAKU) WARNING NR 014//
RMKS/
1. SUPER TYPHOON 04W (SINLAKU) WARNING NR 014
UPGRADED FROM TYPHOON 04W
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
120600Z --- NEAR 10.3N 150.6E
MOVEMENT PAST SIX HOURS - 310 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 015 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
105 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 215 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
REPEAT POSIT: 10.3N 150.6E
---
FORECASTS:
12 HRS, VALID AT:
121800Z --- 11.5N 149.4E
MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
// END PART 01 //

Original Message :

WTPQ30 RJTD 120600
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO.16 FOR TY 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TY SINLAKU IS LOCATED AT 10.3N, 150.7E. INFORMATION ON THE CURRENT
POSITION IS BASED ON ANIMATED MSI. POSITIONAL ACCURACY IS GOOD.
CENTRAL PRESSURE IS 940HPA AND MAXIMUM SUSTAINED WINDS NEAR THE
CENTER ARE 95KNOTS. THE SYSTEM IS IN A FAVORABLE ENVIRONMENT FOR
DEVELOPMENT UNDER THE INFLUENCE OF HIGH SSTS, HIGH TCHP, WEAK VWS
AND GOOD UPPER-LEVEL OUTFLOW. THIS HAS CAUSED THE SYSTEM TO
DEVELOP OVER THE LAST SIX HOURS. INFORMATION ON THE CURRENT
INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING NORTHWESTWARD ALONG THE SOUTHWESTERN
PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH. ANIMATED MSI SHOWS A
BAND SPIRALING AROUND THE EYE BY AT LEAST 360 DEGREES. ANIMATED
MSI SHOWS GOOD CLOUD CHARACTERISTICS OF ANTICYCLONIC OUTFLOW.
3.TRACK FORECAST
THE SYSTEM WILL MOVE NORTHWESTWARD ALONG THE PERIPHERY OF A
MID-LEVEL SUB-TROPICAL HIGH UNTIL FT48. THE SYSTEM WILL THEN
GRADUALLY TURN TO THE NORTH UNTIL FT120. THE TRACK FORECAST IS
BASED ON GSM PREDICTIONS, AND REFERENCE TO OTHER NWP MODELS. TRACK
FORECAST CONFIDENCE IS FAIR BECAUSE ALL NWP MODELS ARE IN CLOSE
AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL DEVELOP UNTIL FT12 DUE TO THE INFLUENCE OF
INTERACTION WITH HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD
UPPER-LEVEL OUTFLOW. THE SYSTEM WILL THEN MAINTAIN ITS INTENSITY
UNTIL FT60 DUE TO THE INFLUENCE OF INTERACTION WITH HIGH SSTS,
HIGH TCHP, WEAK VWS AND DRY AIR. THE SYSTEM WILL THEN WEAKEN UNTIL
FT120 DUE TO THE INFLUENCE OF INTERACTION WITH LOWER SSTS AND
REDUCED TCHP. THE INTENSITY FORECAST IS BASED ON A CONSENSUS OF
GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPQ31 PGUM 120652
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 13A
National Weather Service Tiyan GU WP042026
452 PM ChST Sun Apr 12 2026

...TYPHOON SINLAKU CONTINUES MOVING NORTH-NORTHWEST TOWARD THE
MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning remains in effect for Guam.
A Tropical Storm Watch is now in effect for Pagan and Alamagan.
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam.

A Typhoon Warning means that damaging winds of 39 mph or more are
expected within 24 hours. For Fananu, typhoon force winds of 74 mph
or more are occurring or imminent. For Rota, Tinian, and Saipan,
the onset of typhoon force winds are forecast for Tuesday morning.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

A Tropical Storm Watch means that tropical storm conditions,
including winds of 39 to 73 mph, are possible within 48 hours.

Residents of Agrihan should carefully monitor the progress of Typhoon
Sinlaku.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...10.3N 150.6E

About 135 miles north-northeast of Ulul
About 160 miles northwest of Fananu
About 210 miles north-northwest of Chuuk
About 450 miles east-southeast of Guam
About 450 miles southeast of Rota
About 465 miles southeast of Tinian
About 465 miles southeast of Saipan

Maximum sustained winds...125 mph
Present movement...north-northwest...345 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Typhoon Sinlaku was located
near Latitude 10.3 degrees North and Longitude 150.6 degrees East.
Sinlaku is moving north-northwest at 9 mph. It is expected to make a
slight turn toward the northwest with little change in forward speed
through Monday as it heads toward the Marianas.

Maximum sustained winds remain at 125 mph. Sinlaku is forecast to
intensify through Monday.

Typhoon force winds extend outward from the center up to 60 miles.
Tropical storm force winds extend outward from the center up to
245 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 800 PM ChST early this evening, followed by an intermediate
advisory at 1100 PM ChST tonight.

$$

Montvila

Original Message :

WTPQ50 RJTD 120600
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 120600UTC 10.3N 150.7E GOOD
MOVE NW 07KT
PRES 940HPA
MXWD 095KT
GUST 135KT
50KT 70NM
30KT 300NM NORTHEAST 210NM SOUTHWEST
FORECAST
24HF 130600UTC 12.8N 147.9E 50NM 70%
MOVE NW 09KT
PRES 925HPA
MXWD 100KT
GUST 140KT
48HF 140600UTC 14.8N 145.4E 85NM 70%
MOVE NW 08KT
PRES 925HPA
MXWD 100KT
GUST 140KT
72HF 150600UTC 16.5N 144.4E 100NM 70%
MOVE NNW SLOWLY
PRES 935HPA
MXWD 095KT
GUST 135KT
96HF 160600UTC 18.8N 143.8E 125NM 70%
MOVE N 06KT
PRES 945HPA
MXWD 085KT
GUST 120KT
120HF 170600UTC 21.6N 144.5E 150NM 70%
MOVE N 07KT
PRES 960HPA
MXWD 075KT
GUST 105KT =

Original Message :

WTJP21 RJTD 120600
WARNING 120600.
WARNING VALID 130600.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 940 HPA
AT 10.3N 150.7E SEA NORTH OF TRUKS MOVING NORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 95 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 70 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 130600UTC AT 12.8N 147.9E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 140600UTC AT 14.8N 145.4E WITH 85 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 150600UTC AT 16.5N 144.4E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
FORECAST POSITION FOR 160600UTC AT 18.8N 143.8E WITH 125 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 170600UTC AT 21.6N 144.5E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 120500 CCA
TCPPQ1

BULLETIN...CORRECTED
TYPHOON SINLAKU (04W) ADVISORY NUMBER 13
NATIONAL WEATHER SERVICE TIYAN GU WP042026
300 PM CHST SUN APR 12 2026

CORRECTED WATCHES AND WARNINGS SECTION.

...TYPHOON SINLAKU TURNS TO THE NORTH-NORTHWEST AND TREKS TOWARD
THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
A TYPHOON WARNING HAS BEEN ISSUED FOR ROTA, TINIAN, AND SAIPAN.
A TROPICAL STORM WARNING HAS BEEN ISSUED FOR GUAM.
A TROPICAL STORM WATCH HAS BEEN ISSUED FOR PAGAN AND ALAMAGAN.

WATCHES AND WARNINGS
--------------------
A TYPHOON WARNING IS NOW IN EFFECT FOR ROTA, TINIAN, AND SAIPAN.
A TROPICAL STORM WARNING IS NOW IN EFFECT FOR GUAM.
A TROPICAL STORM WATCH IS NOW IN EFFECT FOR PAGAN AND ALAMAGAN.
A TYPHOON WARNING REMAINS IN EFFECT FOR FANANU IN CHUUK STATE.
A TROPICAL STORM WARNING REMAINS IN EFFECT FOR ULUL IN CHUUK STATE.
A TYPHOON WATCH REMAINS IN EFFECT FOR ULUL IN CHUUK STATE.
A TYPHOON WATCH REMAINS IN EFFECT FOR GUAM.

A TYPHOON WARNING MEANS THAT DAMAGING WINDS OF 39 MPH OR MORE ARE
EXPECTED WITHIN 24 HOURS. FOR FANANU, TYPHOON FORCE WINDS OF 74 MPH
OR MORE ARE OCCURRING OR IMMINENT. FOR ROTA, TINIAN, AND SAIPAN,
THE ONSET OF TYPHOON FORCE WINDS ARE FORECAST FOR TUESDAY MORNING.
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS,
INCLUDING WINDS OF 39 TO 73 MPH, ARE EXPECTED WITHIN 24 HOURS.
A TYPHOON WATCH MEANS THAT TYPHOON CONDITIONS, INCLUDING WINDS OF 74
MPH OR MORE, ARE POSSIBLE WITHIN 48 HOURS.
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS,
INCLUDING WINDS OF 39 TO 73 MPH, ARE POSSIBLE WITHIN 48 HOURS.

RESIDENTS OF AGRIHAN SHOULD CAREFULLY MONITOR THE PROGRESS OF TYPHOON
SINLAKU.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...10.2N 151.0E

ABOUT 140 MILES NORTHWEST OF FANANU
ABOUT 145 MILES NORTHEAST OF ULUL
ABOUT 200 MILES NORTH-NORTHWEST OF CHUUK
ABOUT 475 MILES EAST-SOUTHEAST OF GUAM
ABOUT 475 MILES SOUTHEAST OF ROTA
ABOUT 490 MILES SOUTHEAST OF TINIAN
ABOUT 490 MILES SOUTHEAST OF SAIPAN

MAXIMUM SUSTAINED WINDS...125 MPH
PRESENT MOVEMENT...NORTH-NORTHWEST...345 DEGREES AT 9 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 100 PM CHST...0300 UTC...THE CENTER OF TYPHOON SINLAKU WAS
LOCATED NEAR LATITUDE 10.2 DEGREES NORTH AND LONGITUDE
151.0 DEGREES EAST. SINLAKU IS MOVING NORTH-NORTHWEST AT 9 MPH.
IT IS EXPECTED TO MAKE A SLIGHT TURN TOWARD THE NORTHWEST WITH
LITTLE CHANGE IN FORWARD SPEED THROUGH MONDAY AS IT HEADS TOWARD THE
MARIANAS.

MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 125 MPH. SINLAKU IS
FORECAST TO INTENSIFY THROUGH TONIGHT, REMAINING A TYPHOON WHILE
HEADING TOWARD THE MARIANAS.

TYPHOON FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO 60 MILES.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO
245 MILES.

NEXT ADVISORY
-------------
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL WEATHER
SERVICE AT 500 PM CHST LATE THIS AFTERNOON, FOLLOWED BY THE NEXT
SCHEDULED ADVISORY AT 800 PM CHST EARLY THIS EVENING.

$$

MONTVILA/CRUZ=

Original Message :

WTPQ31 PGUM 120421 CCA
TCPPQ1

BULLETIN...CORRECTED
Typhoon Sinlaku (04W) Advisory Number 13
National Weather Service Tiyan GU WP042026
221 PM ChST Sun Apr 12 2026

Corrected Watches and Warnings section.

...TYPHOON SINLAKU TURNS TO THE NORTH-NORTHWEST AND TREKS TOWARD
THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
A Typhoon Warning has been issued for Rota, Tinian, and Saipan.
A Tropical Storm Warning has been issued for Guam.
A Tropical Storm Watch has been issued for Pagan and Alamagan.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning is now in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning is now in effect for Guam.
A Tropical Storm Watch is now in effect for Pagan and Alamagan.
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam.

A Typhoon Warning means that damaging winds of 39 mph or more are
expected within 24 hours, with the onset of typhoon force winds
of 74 mph or more forecast for Tuesday morning.
A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.
A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.
A Tropical Storm Watch means that tropical storm conditions, including
winds of 39 to 73 mph, are possible within 48 hours.

Residents of Agrihan should carefully monitor the progress of Typhoon
Sinlaku.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...10.2N 151.0E

About 140 miles northwest of Fananu
About 145 miles northeast of Ulul
About 200 miles north-northwest of Chuuk
About 475 miles east-southeast of Guam
About 475 miles southeast of Rota
About 490 miles southeast of Tinian
About 490 miles southeast of Saipan

Maximum sustained winds...125 mph
Present movement...north-northwest...345 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 10.2 degrees North and Longitude
151.0 degrees East. Sinlaku is moving north-northwest at 9 mph.
It is expected to make a slight turn toward the northwest with
little change in forward speed through Monday as it heads toward the
Marianas.

Maximum sustained winds have increased to 125 mph. Sinlaku is
forecast to intensify through tonight, remaining a typhoon while
heading toward the Marianas.

Typhoon force winds extend outward from the center up to 60 miles.
Tropical storm force winds extend outward from the center up to
245 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST late this afternoon, followed by the next
scheduled advisory at 800 PM ChST early this evening.

$$

Montvila

Original Message :

WTPQ31 PGUM 120358
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 13
National Weather Service Tiyan GU WP042026
158 PM ChST Sun Apr 12 2026

...TYPHOON SINLAKU TURNS TO THE NORTH-NORTHWEST AND TREKS TOWARD
THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
A Typhoon Warning has been issued for Rota, Tinian, and Saipan.
A Tropical Storm Warning has been issued for Guam.
A Tropical Storm Watch has been issued for Pagan and Alamagan.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning is now in effect for Rota, Tinian, and Saipan.
A Tropical Storm Warning is now in effect for Guam.
A Tropical Storm Watch is now in effect for Pagan and Alamagan.
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that damaging winds of 39 mph or more are
expected within 24 hours, with the onset of typhoon force winds
expected.
A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.
A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.
A Tropical Storm Watch means that tropical storm conditions, including
winds of 39 to 73 mph, are possible within 48 hours.

Residents of Agrihan should carefully monitor the progress of Typhoon
Sinlaku.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...10.2N 151.0E

About 140 miles northwest of Fananu
About 145 miles northeast of Ulul
About 200 miles north-northwest of Chuuk
About 475 miles east-southeast of Guam
About 475 miles southeast of Rota
About 490 miles southeast of Tinian
About 490 miles southeast of Saipan

Maximum sustained winds...125 mph
Present movement...north-northwest...345 degrees at 9 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 10.2 degrees North and Longitude
151.0 degrees East. Sinlaku is moving north-northwest at 9 mph.
It is expected to make a slight turn toward the northwest with
little change in forward speed through Monday as it heads toward the
Marianas.

Maximum sustained winds have increased to 125 mph. Sinlaku is
forecast to intensify through tonight, remaining a typhoon while
heading toward the Marianas.

Typhoon force winds extend outward from the center up to 60 miles.
Tropical storm force winds extend outward from the center up to
245 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST late this afternoon, followed by the next
scheduled advisory at 800 PM ChST early this evening.

$$

Montvila

Original Message :

WTJP31 RJTD 120300
WARNING 120300.
WARNING VALID 130300.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 940 HPA
AT 10.1N 150.9E SEA NORTH OF TRUKS MOVING NORTHNORTHWEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 90 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 70 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 130300UTC AT 12.4N 148.2E WITH 57 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 120300
RSMC TROPICAL CYCLONE ADVISORY
NAME TY 2604 SINLAKU (2604)
ANALYSIS
PSTN 120300UTC 10.1N 150.9E GOOD
MOVE NNW 07KT
PRES 940HPA
MXWD 090KT
GUST 130KT
50KT 70NM
30KT 300NM NORTHEAST 210NM SOUTHWEST
FORECAST
24HF 130300UTC 12.4N 148.2E 57NM 70%
MOVE NW 09KT
PRES 920HPA
MXWD 100KT
GUST 140KT
45HF 140000UTC 14.3N 145.7E 85NM 70%
MOVE NW 09KT
PRES 920HPA
MXWD 100KT
GUST 140KT
69HF 150000UTC 16.1N 144.3E 120NM 70%
MOVE NW 06KT
PRES 925HPA
MXWD 095KT
GUST 135KT
93HF 160000UTC 18.2N 143.3E 150NM 70%
MOVE NNW 06KT
PRES 935HPA
MXWD 090KT
GUST 130KT
117HF 170000UTC 20.6N 143.4E 180NM 70%
MOVE N 06KT
PRES 960HPA
MXWD 075KT
GUST 105KT =

Original Message :

WTPN31 PGTW 120300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TYPHOON 04W (SINLAKU) WARNING NR 013 //
RMKS/
1. TYPHOON 04W (SINLAKU) WARNING NR 013
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
120000Z --- NEAR 9.9N 151.2E
MOVEMENT PAST SIX HOURS - 345 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 020 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 085 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
105 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 215 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
REPEAT POSIT: 9.9N 151.2E
---
FORECASTS:
12 HRS, VALID AT:
121200Z --- 10.9N 150.3E
MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
055 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 315 DEG/ 09 KTS
---
24 HRS, VALID AT:
130000Z --- 12.1N 149.0E
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 055 NM NORTHEAST QUADRANT
055 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
190 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 305 DEG/ 08 KTS
---
36 HRS, VALID AT:
131200Z --- 13.1N 147.6E
MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
200 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 305 DEG/ 09 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
140000Z --- 14.1N 146.0E
MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 310 DEG/ 06 KTS
---
72 HRS, VALID AT:
150000Z --- 15.6N 144.2E
MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 065 NM NORTHEAST QUADRANT
065 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 345 DEG/ 07 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
160000Z --- 18.4N 143.5E
MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 055 NM NORTHEAST QUADRANT
055 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 010 DEG/ 06 KTS
---
120 HRS, VALID AT:
170000Z --- 20.9N 143.9E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
---
REMARKS:
120300Z POSITION NEAR 10.2N 151.0E.
12APR26. TYPHOON 04W (SINLAKU), LOCATED APPROXIMATELY 440 NM
EAST-SOUTHEAST OF NAVSTA GUAM, HAS TRACKED NORTH-NORTHWESTWARD AT 08
KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 120000Z IS 944 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 120000Z IS 35 FEET. NEXT WARNINGS AT
120900Z, 121500Z, 122100Z AND 130300Z.//
NNNN

Original Message :

WTPQ31 PGUM 120101
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 12A
National Weather Service Tiyan GU WP042026
1101 AM ChST Sun Apr 12 2026

...TYPHOON SINLAKU CONTINUES SLOWLY MOVING NORTH-NORTHEAST AWAY FROM
CHUUK...

CHANGES WITH THIS ADVISORY
--------------------------
The Tropical Storm Warning for Chuuk in Chuuk State is cancelled.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Ulul in Chuuk State.

A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds
of 74 mph or more, are occurring.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

Residents of Agrihan, Anatahan, Alamagan and Pagan should carefully
monitor the progress of Typhoon Sinlaku.

SUMMARY OF 1100 AM CHST...0100 UTC...INFORMATION
-----------------------------------------------
Location...9.9N 151.2E

About 115 miles northwest of Fananu
About 140 miles northeast of Ulul
About 175 miles north-northwest of Chuuk
About 500 miles east-southeast of Guam
About 500 miles southeast of Rota
About 515 miles southeast of Tinian
About 515 miles southeast of Saipan

Maximum sustained winds...110 mph
Present movement...north-northeast...15 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM CHST...0100 UTC...the center of Typhoon Sinlaku was located
near Latitude 9.9 degrees North and Longitude 151.2 degrees East.
Sinlaku is moving north-northeast at 5 mph. It is expected to make a
turn toward the north and then northwest with a slight increase in
forward speed through Monday as it heads toward the Marianas.

Maximum sustained winds remain at 110 mph. Sinlaku is forecast to
intensify through tonight, remaining a typhoon as it heads toward the
Marianas.

Typhoon force winds extend outward from the center up to 50 miles.
Tropical storm force winds extend outward from the center up to 245
miles to the northeast and up to 200 miles elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 200 PM ChST this afternoon, followed by an intermediate
advisory at 500 PM ChST late this afternoon.

$$

Montvila

Original Message :

WTJP21 RJTD 120000
WARNING 120000.
WARNING VALID 130000.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 940 HPA
AT 09.8N 151.2E TRUKS MOVING NORTHNORTHWEST 06 KNOTS.
POSITION GOOD.
MAX WINDS 90 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 70 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 130000UTC AT 12.1N 148.6E WITH 57 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 140000UTC AT 14.3N 145.7E WITH 85 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 150000UTC AT 16.1N 144.3E WITH 120 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 95 KNOTS NEAR CENTER.
FORECAST POSITION FOR 160000UTC AT 18.2N 143.3E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 90 KNOTS NEAR CENTER.
FORECAST POSITION FOR 170000UTC AT 20.6N 143.4E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
960 HPA, MAX WINDS 75 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP31 RJTD 112100
WARNING 112100.
WARNING VALID 122100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 950 HPA
AT 09.5N 151.3E TRUKS MOVING NORTH SLOWLY.
POSITION GOOD.
MAX WINDS 85 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 70 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 122100UTC AT 11.8N 148.7E WITH 57 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
925 HPA, MAX WINDS 95 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 112118
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 12
National Weather Service Tiyan GU WP042026
718 AM ChST Sun Apr 12 2026

...TYPHOON SINLAKU CONTINUES TO INTENSIFY AS IT PIVOTS TOWARD THE
MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk and Ulul in
Chuuk State.

A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds
of 74 mph or more, are occurring.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

Residents of Agrihan, Anatahan, Alamagan and Pagan should carefully
monitor the progress of Typhoon Sinlaku.

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...9.5N 151.3E

About 90 miles northwest of Fananu
About 125 miles east-northeast of Ulul
About 145 miles north-northwest of Chuuk
About 225 miles northeast of Puluwat
About 520 miles east-southeast of Guam
About 520 miles southeast of Rota
About 540 miles southeast of Tinian
About 540 miles southeast of Saipan

Maximum sustained winds...110 mph
Present movement...north-northeast...15 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Typhoon Sinlaku was located
near Latitude 9.5 degrees North and Longitude 151.3 degrees East.
Sinlaku is moving north-northeast at 5 mph. It is expected to make a
turn toward the northwest with a slight increase in forward speed
through Monday as it heads toward the Marianas.

Maximum sustained winds have increased to 110 mph. Sinlaku is forecast
to intensify through tonight, remaining a typhoon as it heads toward
the Marianas.

Typhoon force winds extend outward from the center up to 50 miles.
Tropical storm force winds extend outward from the center up to 245
miles to the northeast and up to 200 miles elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST later this morning, followed by the next
scheduled advisory at 200 PM ChST this afternoon.

$$

Montvila

Original Message :

WTPQ31 PGUM 111843
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 11A
National Weather Service Tiyan GU WP042026
443 AM ChST Sun Apr 12 2026

...TYPHOON SINLAKU CONTINUES TO SLOWLY STRENGTHEN AS IT HEADS
TOWARDS THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk and Ulul in
Chuuk State.

A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds
of 74 mph or more, are occurring.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

SUMMARY OF 400 AM CHST...1800 UTC...INFORMATION
-----------------------------------------------
Location...9.3N 151.4E

About 75 miles northwest of Fananu
About 125 miles east-northeast of Ulul
About 130 miles north-northwest of Chuuk
About 450 miles north-northwest of Nukuoro
About 530 miles east-southeast of Guam
About 535 miles southeast of Rota
About 555 miles southeast of Tinian
About 555 miles southeast of Saipan
About 905 miles east of Yap

Maximum sustained winds...100 mph
Present movement...northwest...325 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 400 AM CHST...1800 UTC...the center of Typhoon Sinlaku was
located near Latitude 9.3 degrees North and Longitude
151.4 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to maintain this general course with a slight increase
in forward speed through Monday.

Maximum sustained winds remain at 100 mph. Sinlaku is forecast to
intensify through Monday.

Typhoon force winds extend outward from the center up to
50 miles. Tropical storm force winds extend outward from the
center up to 245 miles to the northeast and up to 165 miles
elsewhere.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST followed by an intermediate
advisory at 1100 AM ChST.

$$

Doll

Original Message :

WTJP31 RJTD 111500
WARNING 111500.
WARNING VALID 121500.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 965 HPA
AT 09.1N 151.2E TRUKS MOVING NORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 75 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 60 MILES.
RADIUS OF OVER 30 KNOT WINDS 300 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 121500UTC AT 11.2N 149.3E WITH 57 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 90 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 111510
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 11
National Weather Service Tiyan GU WP042026
110 AM ChST Sun Apr 12 2026

...TYPHOON SINLAKU STRENGTHENING AS IT MOVES NORTHWEST TOWARDS
THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk and Ulul in
Chuuk State.

A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds
of 74 mph or more, are occurring.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...9.2N 150.9E

About 95 miles east-northeast of Ulul
About 100 miles west-northwest of Fananu
About 135 miles north-northwest of Chuuk
About 195 miles northeast of Puluwat
About 465 miles northwest of Nukuoro
About 510 miles southeast of Guam
About 515 miles southeast of Rota
About 535 miles southeast of Tinian
About 535 miles southeast of Saipan
About 875 miles east of Yap

Maximum sustained winds...100 mph
Present movement...northwest...305 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Typhoon Sinlaku was
located near Latitude 9.2 degrees North and Longitude
150.9 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to maintain this general course with a slight increase
in forward speed through Monday.

Maximum sustained winds have increased to 100 mph. Sinlaku is
forecast to intensify through Monday, potentially passing through
the Marianas as a category 3 or 4 typhoon.

Typhoon force winds extend outward from the center up to
50 miles. Tropical storm force winds extend outward from the
center up to 245 miles to the northeast and up to 165 miles
elsewhere.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST followed by the next scheduled advisory at
800 AM ChST.

$$

Doll

Original Message :

WTPQ31 PGUM 111312 CCA
TCPPQ1

BULLETIN...CORRECTED
Typhoon Sinlaku (04W) Intermediate Advisory Number 10A
National Weather Service Tiyan GU WP042026
1112 PM ChST Sat Apr 11 2026

Corrected to add Tinian and Rota
...TYPHOON SINLAKU MOVING NORTHWEST AWAY FROM CHUUK AND TOWARDS
THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk and Ulul in
Chuuk State.

A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds
of 74 mph or more, are occurring.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

SUMMARY OF 1000 PM CHST...1200 UTC...INFORMATION
-----------------------------------------------
Location...9.3N 151.0E

About 95 miles west-northwest of Fananu
About 105 miles east-northeast of Ulul
About 140 miles north-northwest of Chuuk
About 205 miles northeast of Puluwat
About 465 miles northwest of Nukuoro
About 510 miles southeast of Guam
About 520 miles southeast of Rota
About 530 miles southeast of Tinian
About 535 miles southeast of Saipan
About 880 miles east of Yap

Maximum sustained winds...90 mph
Present movement...northwest...325 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CHST...1200 UTC...the center of Typhoon Sinlaku was
located near Latitude 9.3 degrees North and Longitude
151.0 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to maintain this general course with a slight increase
in forward speed through Sunday.

Maximum sustained winds remain at 90 mph. Sinlaku is
forecast to intensify through Sunday night, potentially
nearing the Marianas as a category 3 or 4 typhoon.

Typhoon force winds extend outward from the center up to
50 miles. Tropical storm force winds extend outward from the
center up to 185 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Sunday morning followed by
an intermediate advisory at 500 AM ChST.

$$

Doll

Original Message :

WTPQ31 PGUM 111246
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 10A
National Weather Service Tiyan GU WP042026
1046 PM ChST Sat Apr 11 2026

...TYPHOON SINLAKU MOVING NORTHWEST AWAY FROM CHUUK AND TOWARDS
THE MARIANAS...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk and Ulul in
Chuuk State.

A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds
of 74 mph or more, are occurring.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

SUMMARY OF 1000 PM CHST...1200 UTC...INFORMATION
-----------------------------------------------
Location...9.3N 151.0E

About 95 miles west-northwest of Fananu
About 105 miles east-northeast of Ulul
About 140 miles north-northwest of Chuuk
About 205 miles northeast of Puluwat
About 465 miles northwest of Nukuoro
About 510 miles southeast of Guam
About 535 miles southeast of Saipan
About 880 miles east of Yap

Maximum sustained winds...90 mph
Present movement...northwest...325 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CHST...1200 UTC...the center of Typhoon Sinlaku was
located near Latitude 9.3 degrees North and Longitude
151.0 degrees East. Sinlaku is moving northwest at 5 mph. It is
expected to maintain this general course with a slight increase
in forward speed through Sunday.

Maximum sustained winds remain at 90 mph. Sinlaku is
forecast to intensify through Sunday night, potentially
nearing the Marianas as a category 3 or 4 typhoon.

Typhoon force winds extend outward from the center up to
50 miles. Tropical storm force winds extend outward from the
center up to 185 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Sunday morning followed by
an intermediate advisory at 500 AM ChST.

$$

Doll

Original Message :

WTPQ31 PGUM 110941
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 10
National Weather Service Tiyan GU WP042026
741 PM ChST Sat Apr 11 2026

...TYPHOON SINLAKU MOVING NORTHWEST...

CHANGES WITH THIS ADVISORY
--------------------------
The Tropical Storm Warning for Polowat in Chuuk State is cancelled.

WATCHES AND WARNINGS
--------------------
The Tropical Storm Warning is cancelled for Polowat in Chuuk State.
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk and Ulul in
Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds
of 74 mph or more, are occurring.
A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 73 mph, are expected within 24 hours.
A Typhoon Watch means that typhoon conditions, including winds of 74
mph or more, are possible within 48 hours.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...9.0N 151.3E

About 70 miles west-northwest of Fananu
About 110 miles north-northwest of Chuuk
About 115 miles east-northeast of Ulul
About 205 miles northeast of Puluwat
About 435 miles northwest of Nukuoro
About 540 miles southeast of Guam
About 545 miles southeast of Rota
About 565 miles southeast of Tinian
About 565 miles southeast of Saipan

Maximum sustained winds...90 mph
Present movement...northwest...325 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Typhoon Sinlaku was
located near Latitude 9.0 degrees North and Longitude 151.3 degrees
East. Sinlaku is moving northwest at 5 mph, likely signaling the
beginning long-awaited slow departure out of Chuuk State. It is
expected to maintain this general course with a slight increase in
forward speed through Sunday as it heads toward the Marianas.

Maximum sustained winds have increased to 90 mph. Sinlaku is
forecast to intensify through Sunday night, potentially
nearing the Marianas as a category 3 or 4 typhoon.

Typhoon force winds extend outward from the center up to
50 miles. Tropical storm force winds extend outward from the
center up to 185 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST tonight followed by the next scheduled
advisory at 200 AM ChST early Sunday morning.

$$

Schank

Original Message :

WTJP31 RJTD 110900
WARNING 110900.
WARNING VALID 120900.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 970 HPA
AT 08.9N 151.3E TRUKS MOVING WESTNORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 70 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 50 MILES.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 120900UTC AT 10.8N 149.6E WITH 57 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 90 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 110701
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Intermediate Advisory Number 9A
National Weather Service Tiyan GU WP042026
501 PM ChST Sat Apr 11 2026

...TYPHOON SINLAKU CONTINUING TO MOVE NORTH-NORTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning remains in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk, Ulul and
Polowat in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds of 74
mph or more, are occurring.
A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 74 mph, are expected within 24 hours.
A Typhoon Watch means that typhoon conditions, including winds
of 74 mph or more, are possible within 48 hours.

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...8.8N 151.6E

About 45 miles west-northwest of Fananu
About 95 miles north of Chuuk
About 130 miles east of Ulul
About 210 miles northeast of Puluwat
About 415 miles north-northwest of Nukuoro
About 565 miles southeast of Guam
About 570 miles southeast of Rota
About 590 miles southeast of Tinian
About 590 miles southeast of Saipan

Maximum sustained winds...85 mph
Present movement...north-northeast...25 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Typhoon Sinlaku was
located near Latitude 8.8 degrees North and Longitude 151.6 degrees
East. Sinlaku is moving north-northeast at 5 mph. It is expected to
make a turn toward the northwest with a slight increase in forward
speed through Sunday as it heads toward the Marianas.

Maximum sustained winds remain at 85 mph. Sinlaku is forecast to
intensify through Sunday, remaining as a typhoon as it moves toward
the Marianas.

Typhoon force winds extend outward from the center up to 50 miles.
Tropical storm force winds extend outward from the center up to 185
miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 800 PM ChST this evening, followed by an intermediate
advisory at 1100 PM ChST later tonight.

$$

Montvila

Original Message :

WTJP31 RJTD 110300
WARNING 110300.
WARNING VALID 120300.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 970 HPA
AT 08.7N 151.4E TRUKS MOVING NORTH SLOWLY.
POSITION GOOD.
MAX WINDS 70 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 50 MILES.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 120300UTC AT 10.2N 149.8E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
935 HPA, MAX WINDS 90 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 110311
TCPPQ1

BULLETIN
Typhoon Sinlaku (04W) Advisory Number 9
National Weather Service Tiyan GU WP042026
111 PM ChST Sat Apr 11 2026

...SINLAKU UPGRADED TO TYPHOON AND NOW MOVING NORTH-NORTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
Tropical Storm Sinlaku has strengthened to a typhoon.
A Typhoon Warning has been issued for Fananu.

WATCHES AND WARNINGS
--------------------
A Typhoon Warning now in effect for Fananu in Chuuk State.
A Tropical Storm Warning remains in effect for Chuuk, Ulul and
Polowat in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch remains in effect for Guam, Rota, Tinian and Saipan.

A Typhoon Warning means that typhoon conditions, including winds of 74
mph or more, are occurring.
A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 74 mph, are expected within 24 hours.
A Typhoon Watch means that typhoon conditions, including winds
of 74 mph or more, are possible within 48 hours.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...8.7N 151.5E

About 50 miles west of Fananu
About 90 miles north-northwest of Chuuk
About 125 miles east of Ulul
About 200 miles northeast of Puluwat
About 560 miles southeast of Guam
About 570 miles southeast of Rota
About 590 miles southeast of Tinian
About 590 miles southeast of Saipan
About 915 miles east of Yap

Maximum sustained winds...85 mph
Present movement...north-northeast...25 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Typhoon Sinlaku was
located near Latitude 8.7 degrees North and Longitude
151.5 degrees East. Sinlaku is moving north-northeast at 5 mph.
It is expected to make a turn toward the northwest with a slight
increase in forward speed through Sunday as it heads toward the
Marianas.

Maximum sustained winds have increased to 85 mph. Sinlaku is forecast
to intensify through tonight.

Typhoon force winds extend outward from the center up to 50 miles.
Tropical storm force winds extend outward from the center up to
185 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST this afternoon, followed by the next scheduled
advisory at 800 PM ChST this evening.

$$

Montvila

Original Message :

WTPQ31 PGUM 110135 CCA
TCPPQ1

BULLETIN...CORRECTED
Tropical Storm Sinlaku (04W) Special Advisory Number 8A
National Weather Service Tiyan GU WP042026
1135 AM ChST Sat Apr 11 2026

...TROPICAL STORM SINLAKU NEARLY STATIONARY AND DIRECTLY IMPACTING
CHUUK...

CHANGES WITH THIS ADVISORY
--------------------------
A Typhoon Watch is now in effect for Guam, Rota, Tinian and Saipan.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Chuuk, Fananu,
Ulul and Polowat in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch is now in effect for Guam, Rota, Tinian and Saipan.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 74 mph, are expected within 24 hours.
A Typhoon Watch means that typhoon conditions, including winds
of 74 mph or more, are possible within 48 hours.

SUMMARY OF 1000 AM CHST...0000 UTC...INFORMATION
-----------------------------------------------
Location...8.5N 151.5E

About 50 miles west of Fananu
About 75 miles north-northwest of Chuuk
About 125 miles east of Ulul
About 195 miles east-northeast of Puluwat
About 475 miles east of Faraulep
About 570 miles southeast of Guam
About 580 miles southeast of Rota
About 600 miles southeast of Tinian
About 600 miles southeast of Saipan

Maximum sustained winds...70 mph
Present movement...east...90 degrees at 1 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 AM CHST...0000 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.5 degrees North and Longitude
151.5 degrees East. Sinlaku is moving east at 1 mph. It is expected to
make a turn toward the north-northwest with an increase in forward
speed through Sunday as it treks toward the Marianas.

Maximum sustained winds remain at 70 mph. Sinlaku is forecast to
intensify through tonight, possibly becoming a typhoon as early as
late afternoon today.

Tropical storm force winds extend outward from the center up to
140 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service in Tiyan, Guam at 200 PM ChST this afternoon, followed by an
intermediate advisory at 500 PM ChST late this afternoon.

$$

Montvila

Original Message :

WTPQ31 PGUM 110059
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Special Advisory Number 8A
National Weather Service Tiyan GU WP042026
1059 AM ChST Sat Apr 11 2026

...TROPICAL STORM SINLAKU NEARLY STATIONARY AND DIRECTLY IMPACTING
CHUUK...

CHANGES WITH THIS ADVISORY
--------------------------
A Typhoon Watch is now in effect for Guam, Rota, Tinian and Saipan.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Chuuk, Fananu,
Ulul and Polowat in Chuuk State.
A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch is now in effect for Guam, Rota, Tinian and Saipan.

A Tropical Storm Warning means that tropical storm conditions,
including winds of 39 to 74 mph, are expected within 24 hours.
A Typhoon Watch means that typhoon conditions, including winds
of 74 mph or more, are possible within 48 hours.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...8.5N 151.5E

About 50 miles west of Fananu
About 75 miles north-northwest of Chuuk
About 125 miles east of Ulul
About 195 miles east-northeast of Puluwat
About 475 miles east of Faraulep
About 570 miles southeast of Guam
About 600 miles southeast of Saipan

Maximum sustained winds...70 mph
Present movement...east...90 degrees at 1 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM CHST...0100 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.5 degrees North and Longitude
151.5 degrees East. Sinlaku is moving east at 1 mph. It is expected to
make a turn toward the north-northwest with an increase in forward
speed through Sunday as it treks toward the Marianas.

Maximum sustained winds remain at 70 mph. Sinlaku is forecast to
intensify through tonight, possibly becoming a typhoon as early as
late afternoon today.

Tropical storm force winds extend outward from the center up to
140 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service in Tiyan, Guam at 200 PM ChST this afternoon, followed by an
intermediate advisory at 500 PM ChST late this afternoon.

$$

Montvila

Original Message :

WTJP31 RJTD 102100
WARNING 102100.
WARNING VALID 112100.
TYPHOON WARNING.
TYPHOON 2604 SINLAKU (2604) 975 HPA
AT 08.0N 151.4E TRUKS ALMOST STATIONARY.
POSITION GOOD.
MAX WINDS 65 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 50 MILES.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 112100UTC AT 09.7N 150.2E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 102138
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 8
National Weather Service Tiyan GU WP042026
738 AM ChST Sat Apr 11 2026

...TROPICAL STORM SINLAKU NEARLY STATIONARY AND DIRECTLY IMPACTING
CHUUK...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Chuuk, Fananu, Ulul
and Polowat in Chuuk State. A Tropical Storm Warning means that
tropical storm conditions, including damaging winds of 39 to 73 mph,
are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State. A Typhoon
Watch means that typhoon conditions, including winds of 74 mph or
greater, are possible within 48 hours.

Residents of Guam, Rota, Tinian, and Saipan should carefully monitor
the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...8.1N 151.0E

About 70 miles northwest of Chuuk
About 90 miles west-southwest of Fananu
About 95 miles east-southeast of Ulul
About 145 miles northwest of Losap
About 150 miles east-northeast of Puluwat
About 560 miles southeast of Guam
About 600 miles southeast of Saipan
About 885 miles east of Yap

Maximum sustained winds...70 mph
Present movement...east...90 degrees at 1 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Tropical Storm Sinlaku was
located near Latitude 8.1 degrees North and Longitude 151.0 degrees
East. Sinlaku is moving east at 1 mph. It is expected to make a turn
toward the north-northwest with an increase in forward speed through
Sunday as it treks toward the Marianas.

Maximum sustained winds remain at 70 mph. Sinlaku is forecast to
intensify through tonight, possibly becoming a typhoon as early as late
afternoon today.

Tropical storm force winds extend outward from the center up to
140 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service in Tiyan, Guam at 1100 AM ChST followed by the next scheduled
advisory at 200 PM ChST this afternoon.

$$

Montvila

Original Message :

WTPN51 PGTW 102100
WARNING ATCG MIL 04W NWP 260410193504
2026041018 04W SINLAKU 008 01 090 01 SATL 060
T000 080N 1510E 060 R050 000 NE QD 050 SE QD 050 SW QD 000 NW QD R034 080 NE QD 100 SE QD 120 SW QD 050 NW QD
T012 085N 1509E 070 R064 020 NE QD 025 SE QD 020 SW QD 000 NW QD R050 030 NE QD 060 SE QD 050 SW QD 030 NW QD R034 100 NE QD 110 SE QD 130 SW QD 080 NW QD
T024 093N 1504E 085 R064 025 NE QD 035 SE QD 030 SW QD 020 NW QD R050 050 NE QD 070 SE QD 070 SW QD 040 NW QD R034 120 NE QD 130 SE QD 130 SW QD 110 NW QD
T036 102N 1491E 105 R064 035 NE QD 045 SE QD 035 SW QD 030 NW QD R050 060 NE QD 080 SE QD 080 SW QD 060 NW QD R034 150 NE QD 150 SE QD 150 SW QD 140 NW QD
T048 113N 1477E 115 R064 040 NE QD 050 SE QD 040 SW QD 035 NW QD R050 080 NE QD 090 SE QD 080 SW QD 080 NW QD R034 160 NE QD 160 SE QD 150 SW QD 150 NW QD
T072 130N 1454E 115 R064 045 NE QD 045 SE QD 035 SW QD 045 NW QD R050 090 NE QD 090 SE QD 080 SW QD 080 NW QD R034 170 NE QD 160 SE QD 140 SW QD 150 NW QD
T096 144N 1436E 110 R064 045 NE QD 045 SE QD 035 SW QD 040 NW QD R050 090 NE QD 090 SE QD 080 SW QD 080 NW QD R034 170 NE QD 170 SE QD 140 SW QD 150 NW QD
T120 161N 1421E 110 R064 050 NE QD 045 SE QD 035 SW QD 040 NW QD R050 090 NE QD 090 SE QD 080 SW QD 080 NW QD R034 180 NE QD 180 SE QD 150 SW QD 160 NW QD
AMP
SUBJ: TROPICAL STORM 04W (SINLAKU) WARNING NR 008
1. TROPICAL STORM 04W (SINLAKU) WARNING NR 008
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
101800Z --- NEAR 8.0N 151.0E
MOVEMENT PAST SIX HOURS - 090 DEGREES AT 01 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 000 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
120 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
REPEAT POSIT: 8.0N 151.0E
---
FORECASTS:
12 HRS, VALID AT:
110600Z --- 8.5N 150.9E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 330 DEG/ 05 KTS
---
24 HRS, VALID AT:
111800Z --- 9.3N 150.4E
MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 305 DEG/ 08 KTS
---
36 HRS, VALID AT:
120600Z --- 10.2N 149.1E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT
150 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
140 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 310 DEG/ 09 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
121800Z --- 11.3N 147.7E
MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
160 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 305 DEG/ 07 KTS
---
72 HRS, VALID AT:
131800Z --- 13.0N 145.4E
MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 170 NM NORTHEAST QUADRANT
160 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 310 DEG/ 06 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
141800Z --- 14.4N 143.6E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 170 NM NORTHEAST QUADRANT
170 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 320 DEG/ 06 KTS
---
120 HRS, VALID AT:
151800Z --- 16.1N 142.1E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
---
REMARKS:
102100Z POSITION NEAR 8.1N 151.0E.
10APR26. TROPICAL STORM 04W (SINLAKU), LOCATED APPROXIMATELY 61
NM WEST-NORTHWEST OF CHUUK, HAS TRACKED EASTWARD AT 01 KNOTS OVER
THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 101800Z IS 983 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 101800Z IS 20 FEET. NEXT WARNINGS AT
110300Z, 110900Z, 111500Z AND 112100Z.//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
0426041012 80N1509E 55
0426041012 80N1509E 55
0426041018 80N1510E 60
0426041018 80N1510E 60
NNNN

Original Message :

WTPQ31 PGUM 101913
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Intermediate Advisory Number 7A
National Weather Service Tiyan GU WP042026
513 AM ChST Sat Apr 11 2026

...TROPICAL STORM SINLAKU (04W) REMAINS NEARLY STATIONARY NEAR
CHUUK...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect For Chuuk, Fananu,
Ulul and Polowat in Chuuk State. A Tropical Storm Warning
means that tropical storm conditions, including damaging winds
of 39 to 73 mph, are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State. A
Typhoon Watch means that typhoon conditions, including winds of
74 mph or greater, are possible within 48 hours.

Residents of Guam, Rota, Tinian, and Saipan should carefully
monitor the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 500 AM CHST...1900 UTC...INFORMATION
-----------------------------------------------
Location...8.0N 151.0E

About 70 miles northwest of Chuuk
About 95 miles west-southwest of Fananu
About 100 miles east-southeast of Ulul
About 150 miles east-northeast of Puluwat
About 445 miles east of Faraulep
About 565 miles southeast of Guam
About 605 miles southeast of Saipan
About 885 miles east of Yap

Maximum sustained winds...70 mph
Present movement...southwest...225 degrees at 1 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 AM CHST...1900 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.0 degrees North and Longitude
151.0 degrees East. Sinlaku is moving southwest at 0 mph. It is
expected to make a turn toward the north-northwest with an
increase in forward speed through Sunday.

Maximum sustained winds remain at 65 mph. Sinlaku is forecast to
intensify through tonight possibly becoming a typhoon.

Tropical storm force winds extend outward from the center up to
140 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST early Sunday morning followed by
an intermediate advisory at1100 AM ChST.

$$

Doll

Original Message :

WTJP31 RJTD 101500
WARNING 101500.
WARNING VALID 111500.
TYPHOON WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) 980 HPA
AT 08.1N 150.7E TRUKS ALMOST STATIONARY.
POSITION GOOD.
MAX WINDS 55 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES NORTHEAST SEMICIRCLE AND 20
MILES ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 111500UTC AT 09.2N 150.1E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 101521
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 7
National Weather Service Tiyan GU WP042026
121 AM ChST Sat Apr 11 2026

...TROPICAL STORM SINLAKU NEARLY STATIONARY CLOSE TO CHUUK...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Chuuk, Fananu, Ulul
and Polowat in Chuuk State. A Tropical Storm Warning means that
tropical storm conditions, including damaging winds of 39 to 73 mph,
are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State. A Typhoon
Watch means that typhoon conditions, including winds of 74 mph or
greater, are possible within 48 hours.

Residents of Guam, Rota, Tinian, and Saipan should carefully
monitor the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...8.2N 150.9E

About 80 miles northwest of Chuuk
About 85 miles east-southeast of Ulul
About 95 miles west-southwest of Fananu
About 150 miles east-northeast of Puluwat
About 155 miles northwest of Losap
About 270 miles east-northeast of Satawal
About 435 miles east of Faraulep
About 480 miles east of Woleai
About 550 miles southeast of Guam
About 590 miles southeast of Saipan
About 880 miles east of Yap

Maximum sustained winds...65 mph
Present movement...nearly stationary at 0 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.2 degrees North and Longitude
150.9 degrees East. Sinlaku is nearly stationary at 0 mph. It is
expected to start moving toward the north-northwest with a slight
increase in forward speed through Sunday. This general forecast
track would take Sinlaku very close to Guam as a category 3 typhoon
Tuesday, with winds close to 140 mph near the center.

Maximum sustained winds have increased to 65 mph. Sinlaku is forecast
to intensify through Monday, likely becoming a typhoon later today.

Tropical storm force winds extend outward from the center up to
140 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST followed by the next scheduled advisory at
800 AM ChST.

$$

Stanko

Original Message :

WTPQ31 PGUM 101316
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Intermediate Advisory Number 6A
National Weather Service Tiyan GU WP042026
1116 PM ChST Fri Apr 10 2026

...TROPICAL STORM SINLAKU REMAINS NEARLY STATIONARY OVER WESTERN
CHUUK STATE...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Chuuk, Fananu, Ulul
and Polowat in Chuuk State. A Tropical Storm Warning means that
tropical storm conditions, including damaging winds of 39 to 73 mph,
are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State. A Typhoon
Watch means that typhoon conditions, including winds of 74 mph or
greater, are possible within 48 hours.

Residents of Guam, Rota, Tinian, and Saipan should carefully
monitor the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...8.1N 150.9E

About 80 miles northwest of Chuuk
About 90 miles east-southeast of Ulul
About 100 miles west-southwest of Fananu
About 145 miles east-northeast of Puluwat
About 270 miles east of Satawal
About 435 miles east of Faraulep
About 555 miles southeast of Guam
About 570 miles southeast of Rota
About 595 miles southeast of Saipan
About 595 miles southeast of Tinian

Maximum sustained winds...50 mph
Present movement...west...270 degrees at 2 mph

DISCUSSION AND OUTLOOK
----------------------
At 1000 PM CHST...1200 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.1 degrees North and Longitude
150.9 degrees East. Sinlaku is moving west at 2 mph. It is expected
to turn toward the northwest with little change in forward speed
through Saturday. This general forecast track will take Sinlaku
very close to Guam on Tuesday as a category 3 typhoon.

Maximum sustained winds remain at 50 mph. Sinlaku is forecast to
intensify through Saturday.

Tropical storm force winds extend outward from the center up to
140 miles to the north and up to 80 miles to the south.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 AM ChST early Saturday morning followed by
an intermediate advisory at 500 AM ChST.

$$

Stanko

Original Message :

WTJP21 RJTD 101200
WARNING 101200.
WARNING VALID 111200.
WARNING IS UPDATED EVERY 6 HOURS.
TYPHOON WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) 980 HPA
AT 08.0N 150.5E TRUKS MOVING WESTNORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 55 KNOTS NEAR CENTER.
RADIUS OF OVER 50 KNOT WINDS 40 MILES NORTHEAST SEMICIRCLE AND 20
MILES ELSEWHERE.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 111200UTC AT 09.0N 150.3E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
970 HPA, MAX WINDS 65 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 121200UTC AT 10.5N 148.1E WITH 85 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.
FORECAST POSITION FOR 131200UTC AT 12.3N 145.0E WITH 120 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 141200UTC AT 14.2N 142.8E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 151200UTC AT 15.9N 141.1E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP31 RJTD 100900
WARNING 100900.
WARNING VALID 110900.
STORM WARNING.
SEVERE TROPICAL STORM 2604 SINLAKU (2604) UPGRADED FROM TROPICAL
STORM 985 HPA
AT 08.1N 150.6E TRUKS MOVING NORTHWEST SLOWLY.
POSITION GOOD.
MAX WINDS 50 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 110900UTC AT 09.0N 150.3E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 100936
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 6
National Weather Service Tiyan GU WP042026
736 PM ChST Fri Apr 10 2026

...TROPICAL STORM SINLAKU REMAINS NEARLY STATIONARY OVER NORTHWESTERN
CHUUK STATE...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Chuuk, Fananu,
Ulul, and Polowat in Chuuk State.

A Tropical Storm Warning means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or greater, are possible within 48 hours.

Residents of Guam, Rota, Tinian, and Saipan should carefully monitor
the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...8.2N 151.0E

About 75 miles northwest of Chuuk
About 90 miles west-southwest of Fananu
About 95 miles east-southeast of Ulul
About 155 miles east-northeast of Puluwat
About 275 miles east-northeast of Satawal
About 445 miles east of Faraulep
About 555 miles southeast of Guam
About 565 miles southeast of Rota
About 595 miles southeast of Saipan
About 595 miles southeast of Tinian

Maximum sustained winds...50 mph
Present movement...west...270 degrees at 2 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.2 degrees North and Longitude
151.0 degrees East. Sinlaku is moving west at 2 mph. It is
expected to make a turn toward the northwest with little change
in forward speed through Saturday, then increasing in speed by Sunday.

Maximum sustained winds have increased to 50 mph. Sinlaku is
forecast to intensify over the next several days, likely becoming
a typhoon Saturday afternoon.

Tropical storm force winds extend outward from the center up to
140 miles to the north and up to 80 miles to the south.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST tonight followed by the next scheduled
advisory at 200 AM ChST early Saturday morning.

$$

Schank

Original Message :

WTPN31 PGTW 100900
WARNING ATCG MIL 04W NWP 260410073721
2026041006 04W SINLAKU 006 01 270 02 SATL 060
T000 082N 1510E 045 R034 120 NE QD 070 SE QD 070 SW QD 120 NW QD
T012 083N 1508E 055 R050 030 NE QD 040 SE QD 040 SW QD 020 NW QD R034 170 NE QD 120 SE QD 120 SW QD 150 NW QD
T024 088N 1504E 065 R064 010 NE QD 020 SE QD 010 SW QD 020 NW QD R050 040 NE QD 050 SE QD 050 SW QD 040 NW QD R034 180 NE QD 140 SE QD 130 SW QD 160 NW QD
T036 093N 1499E 080 R064 020 NE QD 020 SE QD 020 SW QD 030 NW QD R050 060 NE QD 060 SE QD 040 SW QD 060 NW QD R034 190 NE QD 150 SE QD 140 SW QD 170 NW QD
T048 101N 1488E 095 R064 040 NE QD 030 SE QD 030 SW QD 030 NW QD R050 070 NE QD 060 SE QD 040 SW QD 060 NW QD R034 190 NE QD 160 SE QD 140 SW QD 190 NW QD
T072 121N 1462E 110 R064 050 NE QD 040 SE QD 000 SW QD 050 NW QD R050 090 NE QD 070 SE QD 050 SW QD 070 NW QD R034 200 NE QD 180 SE QD 170 SW QD 190 NW QD
T096 138N 1442E 110 R064 060 NE QD 050 SE QD 050 SW QD 060 NW QD R050 100 NE QD 080 SE QD 070 SW QD 090 NW QD R034 210 NE QD 200 SE QD 170 SW QD 200 NW QD
T120 156N 1425E 110 R064 060 NE QD 060 SE QD 060 SW QD 070 NW QD R050 120 NE QD 100 SE QD 090 SW QD 110 NW QD R034 220 NE QD 230 SE QD 190 SW QD 210 NW QD
AMP
SUBJ: TROPICAL STORM 04W (SINLAKU) WARNING NR 006
1. TROPICAL STORM 04W (SINLAKU) WARNING NR 006
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
100600Z --- NEAR 8.2N 151.0E
MOVEMENT PAST SIX HOURS - 270 DEGREES AT 02 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
REPEAT POSIT: 8.2N 151.0E
---
FORECASTS:
12 HRS, VALID AT:
101800Z --- 8.3N 150.8E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 170 NM NORTHEAST QUADRANT
120 NM SOUTHEAST QUADRANT
120 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 320 DEG/ 03 KTS
---
24 HRS, VALID AT:
110600Z --- 8.8N 150.4E
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 010 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT
140 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 315 DEG/ 04 KTS
---
36 HRS, VALID AT:
111800Z --- 9.3N 149.9E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
150 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 305 DEG/ 07 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
120600Z --- 10.1N 148.8E
MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
160 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 310 DEG/ 08 KTS
---
72 HRS, VALID AT:
130600Z --- 12.1N 146.2E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 310 DEG/ 06 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
140600Z --- 13.8N 144.2E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
200 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 320 DEG/ 06 KTS
---
120 HRS, VALID AT:
150600Z --- 15.6N 142.5E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
230 NM SOUTHEAST QUADRANT
190 NM SOUTHWEST QUADRANT
210 NM NORTHWEST QUADRANT
---
REMARKS:
100900Z POSITION NEAR 8.2N 151.0E.
10APR26. TROPICAL STORM 04W (SINLAKU), LOCATED APPROXIMATELY 488
NM SOUTHEAST OF ANDERSEN AFB, HAS TRACKED WESTWARD AT 02 KNOTS
OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 100600Z IS 989 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 100600Z IS 21 FEET. NEXT WARNINGS AT
101500Z, 102100Z, 110300Z AND 110900Z.
//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
0426041006 82N1510E 45
NNNN

Original Message :

WTPQ31 PGUM 100716
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Intermediate Advisory Number 5A
National Weather Service Tiyan GU WP042026
516 PM ChST Fri Apr 10 2026

...TROPICAL STORM SINLAKU REMAINS NEARLY STATIONARY OVER NORTHWESTERN
CHUUK STATE...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Chuuk, Fananu, Ulul,
and Polowat in Chuuk State.

A Tropical Storm Warning means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or greater, are possible within 48 hours.

A Tropical Storm Watch means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are possible within the
next 48 hours.

Residents of Guam, Rota, Tinian and Saipan should carefully monitor
the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 500 PM CHST...0700 UTC...INFORMATION
-----------------------------------------------
Location...8.2N 151.0E

About 75 miles northwest of Chuuk
About 90 miles west-southwest of Fananu
About 95 miles east-southeast of Ulul
About 155 miles east-northeast of Puluwat
About 275 miles east-northeast of Satawal
About 445 miles east of Faraulep
About 555 miles southeast of Guam
About 565 miles southeast of Rota
About 595 miles southeast of Saipan
About 595 miles southeast of Tinian

Maximum sustained winds...45 mph
Present movement...west-southwest...250 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 500 PM CHST...0700 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.2 degrees North and Longitude
151.0 degrees East. Sinlaku is moving west-southwest at 3 mph. It
is expected to make a turn toward the northwest with a slight
decrease in forward speed through Saturday, then increase by Sunday.

Maximum sustained winds remain at 45 mph. Sinlaku is forecast to
intensify for the next several days, possibly becoming a typhoon
Saturday evening.

Tropical storm force winds extend outward from the center up to
140 miles to the north and up to 80 miles to the south.
None

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 700 PM ChST this evening followed by
an intermediate advisory at 200 AM ChST early Saturday morning.

$$

Williams

Original Message :

WTJP21 RJTD 100600
WARNING 100600.
WARNING VALID 110600.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
TROPICAL STORM 2604 SINLAKU (2604) 990 HPA
AT 08.0N 150.7E TRUKS ALMOST STATIONARY.
POSITION GOOD.
MAX WINDS 45 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 110600UTC AT 08.8N 150.2E WITH 50 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 120600UTC AT 10.2N 148.3E WITH 85 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.
FORECAST POSITION FOR 130600UTC AT 11.9N 145.3E WITH 120 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 140600UTC AT 13.7N 142.7E WITH 150 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 150600UTC AT 15.3N 141.2E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 100531 CCA
TCPPQ1

BULLETIN...CORRECTED
Tropical Storm Sinlaku (04W) Advisory Number 5
National Weather Service Tiyan GU WP042026
331 PM ChST Fri Apr 10 2026

Corrected to change watch to warning for Chuuk in Watches and
warnings section.

...TROPICAL STORM SINLAKU NEARLY STATIONARY...

CHANGES WITH THIS ADVISORY
--------------------------
The Tropical Storm Watch for Chuuk is upgraded to a Tropical Storm
Warning.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning is now in effect for Chuuk in Chuuk State.

A Tropical Storm Warning remains in effect for Fananu, Ulul, and
Polowat in Chuuk State.

A Tropical Storm Warning means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or greater, are possible within 48 hours.

A Tropical Storm Watch remains in effect for Chuuk in Chuuk State.

A Tropical Storm Watch means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are possible within the
next 48 hours.

Residents of Guam, Rota, Tinian and Saipan should carefully monitor
the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...8.2N 151.1E

About 70 miles northwest of Chuuk
About 85 miles west-southwest of Fananu
About 100 miles east-southeast of Ulul
About 160 miles east-northeast of Puluwat
About 285 miles east of Satawal
About 450 miles east of Faraulep
About 560 miles southeast of Guam
About 570 miles southeast of Rota
About 600 miles southeast of Saipan
About 600 miles southeast of Tinian

Maximum sustained winds...45 mph
Present movement...west-southwest...250 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.2 degrees North and Longitude
151.1 degrees East. Sinlaku is moving west-southwest at 3 mph. It
is expected to make a turn toward the northwest with decrease in
forward speed through Saturday, then increase by Sunday.

Maximum sustained winds have increased to 45 mph. Sinlaku is
forecast to intensify for the next several days, possibly becoming a
typhoon Saturday evening.

Tropical storm force winds extend outward from the center up to
140 miles to the north and up to 80 miles to the south.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST followed by the next scheduled advisory at
800 PM ChST.

$$

Kleeschulte

Original Message :

WTPQ31 PGUM 100342
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 5
National Weather Service Tiyan GU WP042026
142 PM ChST Fri Apr 10 2026

...TROPICAL STORM SINLAKU NEARLY STATIONARY...

CHANGES WITH THIS ADVISORY
--------------------------
The Tropical Storm Watch for Chuuk is upgraded to a Tropical Storm
Warning.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Fananu, Ulul, and
Polowat in Chuuk State.

A Tropical Storm Warning means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are occurring.

A Typhoon Watch remains in effect for Ulul in Chuuk State.

A Typhoon Watch means that typhoon conditions, including winds of 74
mph or greater, are possible within 48 hours.

A Tropical Storm Watch remains in effect for Chuuk in Chuuk State.

A Tropical Storm Watch means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are possible within the
next 48 hours.

Residents of Guam, Rota, Tinian and Saipan should carefully monitor
the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...8.2N 151.1E

About 70 miles northwest of Chuuk
About 85 miles west-southwest of Fananu
About 100 miles east-southeast of Ulul
About 160 miles east-northeast of Puluwat
About 285 miles east of Satawal
About 450 miles east of Faraulep
About 560 miles southeast of Guam
About 570 miles southeast of Rota
About 600 miles southeast of Saipan
About 600 miles southeast of Tinian

Maximum sustained winds...45 mph
Present movement...west-southwest...250 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.2 degrees North and Longitude
151.1 degrees East. Sinlaku is moving west-southwest at 3 mph. It
is expected to make a turn toward the northwest with decrease in
forward speed through Saturday, then increase by Sunday.

Maximum sustained winds have increased to 45 mph. Sinlaku is
forecast to intensify for the next several days, possibly becoming a
typhoon Saturday evening.

Tropical storm force winds extend outward from the center up to
140 miles to the north and up to 80 miles to the south.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST followed by the next scheduled advisory at
800 PM ChST.

$$

Kleeschulte

Original Message :

WTJP31 RJTD 100300
WARNING 100300.
WARNING VALID 110300.
STORM WARNING.
TROPICAL STORM 2604 SINLAKU (2604) 990 HPA
AT 08.3N 149.9E CAROLINES MOVING WEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 45 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 270 MILES NORTHEAST SEMICIRCLE AND 210
MILES ELSEWHERE.
FORECAST POSITION FOR 110300UTC AT 08.9N 149.4E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPN31 PGTW 100300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 04W (SINLAKU) WARNING NR 005//
RMKS/
1. TROPICAL STORM 04W (SINLAKU) WARNING NR 005
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
100000Z --- NEAR 8.2N 151.2E
MOVEMENT PAST SIX HOURS - 250 DEGREES AT 03 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
REPEAT POSIT: 8.2N 151.2E
---
FORECASTS:
12 HRS, VALID AT:
101200Z --- 8.2N 150.8E
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
140 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 315 DEG/ 01 KTS
---
24 HRS, VALID AT:
110000Z --- 8.4N 150.6E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
// END PART 01 //

Original Message :

WTPN51 PGTW 100300
WARNING ATCG MIL 04W NWP 260410015645
2026041000 04W SINLAKU 005 01 250 03 SATL 030
T000 082N 1512E 040 R034 120 NE QD 070 SE QD 070 SW QD 120 NW QD
T012 082N 1508E 050 R050 030 NE QD 040 SE QD 040 SW QD 030 NW QD R034 140 NE QD 100 SE QD 110 SW QD 140 NW QD
T024 084N 1506E 060 R050 040 NE QD 060 SE QD 060 SW QD 040 NW QD R034 160 NE QD 130 SE QD 140 SW QD 150 NW QD
T036 089N 1503E 070 R064 030 NE QD 030 SE QD 030 SW QD 030 NW QD R050 050 NE QD 060 SE QD 070 SW QD 050 NW QD R034 190 NE QD 150 SE QD 150 SW QD 160 NW QD
T048 096N 1495E 085 R064 030 NE QD 030 SE QD 030 SW QD 030 NW QD R050 050 NE QD 060 SE QD 050 SW QD 050 NW QD R034 200 NE QD 150 SE QD 150 SW QD 170 NW QD
T072 114N 1472E 105 R064 040 NE QD 050 SE QD 040 SW QD 040 NW QD R050 080 NE QD 060 SE QD 060 SW QD 060 NW QD R034 210 NE QD 180 SE QD 180 SW QD 200 NW QD
T096 132N 1451E 105 R064 050 NE QD 050 SE QD 040 SW QD 060 NW QD R050 100 NE QD 080 SE QD 070 SW QD 080 NW QD R034 220 NE QD 200 SE QD 200 SW QD 210 NW QD
T120 152N 1435E 105 R064 070 NE QD 060 SE QD 060 SW QD 070 NW QD R050 120 NE QD 100 SE QD 080 SW QD 100 NW QD R034 240 NE QD 220 SE QD 190 SW QD 220 NW QD
AMP
SUBJ: TROPICAL STORM 04W (SINLAKU) WARNING NR 005
1. TROPICAL STORM 04W (SINLAKU) WARNING NR 005
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
100000Z --- NEAR 8.2N 151.2E
MOVEMENT PAST SIX HOURS - 250 DEGREES AT 03 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
REPEAT POSIT: 8.2N 151.2E
---
FORECASTS:
12 HRS, VALID AT:
101200Z --- 8.2N 150.8E
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
110 NM SOUTHWEST QUADRANT
140 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 315 DEG/ 01 KTS
---
24 HRS, VALID AT:
110000Z --- 8.4N 150.6E
MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 330 DEG/ 03 KTS
---
36 HRS, VALID AT:
111200Z --- 8.9N 150.3E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
150 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 310 DEG/ 05 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
120000Z --- 9.6N 149.5E
MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
150 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 310 DEG/ 07 KTS
---
72 HRS, VALID AT:
130000Z --- 11.4N 147.2E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
200 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 310 DEG/ 07 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
140000Z --- 13.2N 145.1E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
080 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
210 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 320 DEG/ 06 KTS
---
120 HRS, VALID AT:
150000Z --- 15.2N 143.5E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 070 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 240 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
190 NM SOUTHWEST QUADRANT
220 NM NORTHWEST QUADRANT
---
REMARKS:
100300Z POSITION NEAR 8.2N 151.1E.
10APR26. TROPICAL STORM 04W (SINLAKU), LOCATED APPROXIMATELY 496
NM SOUTHEAST OF ANDERSEN AFB, HAS TRACKED WEST-SOUTHWESTWARD AT
03 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 100000Z IS 994 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 100000Z IS 20 FEET.
NEXT WARNINGS AT 100900Z, 101500Z, 102100Z AND 110300Z.//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 83N1515E 35
0426041000 82N1512E 40
NNNN

Original Message :

WTPQ31 PGUM 100107
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Intermediate Advisory Number 4A
National Weather Service Tiyan GU WP042026
1107 AM ChST Fri Apr 10 2026

...TROPICAL STORM SINLAKU CONTINUES SLOWLY MOVE NORTHWEST ACROSS
NORTHWESTERN CHUUK STATE...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning remains in effect for Fananu, Ulul, and
Polowat in Chuuk State.
A Tropical Storm Warning means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are expected within the
next 48 hours.

A Typhoon Watch remains in effect for Ulul in Chuuk State.
A Typhoon Watch means that typhoon conditions, including winds of 74
mph or greater, are possible within 48 hours.

A Tropical Storm Watch remains in effect for Chuuk in Chuuk State.
A Tropical Storm Watch means that tropical storm conditions, including
damaging winds of 39 to 73 mph, are possible within the next 48
hours.

Residents of Guam, Rota, Tinian and Saipan should carefully monitor
the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 1100 AM CHST...0100 UTC...INFORMATION
-----------------------------------------------
Location...8.2N 151.2E

About 65 miles northwest of Chuuk
About 75 miles west-southwest of Fananu
About 105 miles east-southeast of Ulul
About 165 miles east-northeast of Puluwat
About 290 miles east of Satawal
About 455 miles east of Faraulep
About 565 miles southeast of Guam
About 605 miles southeast of Saipan
About 900 miles east of Yap

Maximum sustained winds...40 mph
Present movement...northwest...315 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 1100 AM CHST...0100 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.2 degrees North and Longitude
151.2 degrees East. Sinlaku is moving northwest at 3 mph. It is
expected to make a turn toward the west with a slight decrease in
forward speed through Saturday.

Maximum sustained winds remain at 40 mph. Sinlaku is forecast to
intensify through tonight.

Tropical storm force winds extend outward from the center up to
105 miles.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 200 PM ChST today followed by an intermediate
advisory at 500 PM ChST this afternoon.

$$

Williams

Original Message :

WTJP21 RJTD 100000
WARNING 100000.
WARNING VALID 110000.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
TROPICAL STORM 2604 SINLAKU (2604) 990 HPA
AT 08.3N 149.9E CAROLINES MOVING WEST 07 KNOTS.
POSITION GOOD.
MAX WINDS 45 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 240 MILES NORTHEAST SEMICIRCLE AND 180
MILES ELSEWHERE.
FORECAST POSITION FOR 110000UTC AT 08.9N 149.4E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
975 HPA, MAX WINDS 60 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 120000UTC AT 09.6N 148.8E WITH 70 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
950 HPA, MAX WINDS 80 KNOTS NEAR CENTER.
FORECAST POSITION FOR 130000UTC AT 11.1N 146.2E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 140000UTC AT 13.0N 143.6E WITH 125 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 150000UTC AT 14.6N 141.8E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTJP31 RJTD 092100
WARNING 092100.
WARNING VALID 102100.
STORM WARNING.
TROPICAL STORM 2604 SINLAKU (2604) 994 HPA
AT 08.3N 149.9E CAROLINES MOVING WEST 10 KNOTS.
POSITION GOOD.
MAX WINDS 40 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 240 MILES NORTHEAST SEMICIRCLE AND 180
MILES ELSEWHERE.
FORECAST POSITION FOR 102100UTC AT 08.6N 149.3E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
980 HPA, MAX WINDS 55 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ50 RJTD 092100
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2604 SINLAKU (2604)
ANALYSIS
PSTN 092100UTC 08.3N 149.9E GOOD
MOVE W 10KT
PRES 994HPA
MXWD 040KT
GUST 060KT
30KT 240NM NORTHEAST 180NM SOUTHWEST
FORECAST
24HF 102100UTC 08.6N 149.3E 42NM 70%
MOVE ALMOST STATIONARY
PRES 980HPA
MXWD 055KT
GUST 080KT
45HF 111800UTC 09.2N 149.2E 70NM 70%
MOVE ALMOST STATIONARY
PRES 965HPA
MXWD 070KT
GUST 100KT
69HF 121800UTC 10.8N 147.0E 100NM 70%
MOVE NW 07KT
PRES 945HPA
MXWD 085KT
GUST 120KT
93HF 131800UTC 12.7N 144.5E 125NM 70%
MOVE NW 08KT
PRES 920HPA
MXWD 100KT
GUST 140KT
117HF 141800UTC 14.4N 142.7E 180NM 70%
MOVE NW 06KT
PRES 920HPA
MXWD 100KT
GUST 140KT =

Original Message :

WTPQ31 PGUM 092123
TCPPQ1

BULLETIN
Tropical Storm Sinlaku (04W) Advisory Number 4
National Weather Service Tiyan GU WP042026
723 AM ChST Fri Apr 10 2026

...TROPICAL STORM SINLAKU CONTINUES TO BECOME BETTER ORGANIZED
NORTHWEST OF CHUUK...

CHANGES WITH THIS ADVISORY
--------------------------
Tropical Storm Warning issued for Polowat.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning is now in effect for Fananu and Ulul in
Chuuk State. Additionally, due to a strengthening system and slower
movement, Polowat has been added to the Tropical Storm Warning.

A Tropical Storm Warning means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are expected within the
next 48 hours.

A Typhoon Watch is now in effect for Ulul in Chuuk State.
A Typhoon Watch means that typhoon conditions, including
winds of 74 mph or greater, are possible within 48 hours.

A Tropical Storm Watch is in effect for Chuuk in Chuuk State. A
Tropical Storm Watch means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are possible within the
next 48 hours.

Residents of Guam, Rota, Tinian and Saipan should carefully
monitor the progress of Tropical Storm Sinlaku (04W).

SUMMARY OF 700 AM CHST...2100 UTC...INFORMATION
-----------------------------------------------
Location...8.4N 151.5E

About 55 miles west-southwest of Fananu
About 70 miles north-northwest of Chuuk
About 125 miles east of Ulul
About 190 miles east-northeast of Puluwat
About 315 miles east-northeast of Satawal
About 475 miles east of Faraulep
About 575 miles southeast of Guam
About 605 miles southeast of Saipan
About 920 miles east of Yap

Maximum sustained winds...40 mph
Present movement...northwest...315 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 AM CHST...2100 UTC...the center of Tropical Storm Sinlaku
was located near Latitude 8.4 degrees North and Longitude
151.5 degrees East. Sinlaku is moving northwest at 3 mph. It is
expected to make a turn toward the west with a slight decrease in
forward speed through Saturday.

Maximum sustained winds have increased to 40 mph. Sinlaku is
forecast to intensify through tonight.

Tropical storm force winds extend outward from the center up to
105 miles.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 AM ChST followed by the next scheduled advisory
at 200 PM ChST.

$$

Doll

Original Message :

WTPQ30 RJTD 091800
RSMC TROPICAL CYCLONE PROGNOSTIC REASONING
REASONING NO. 6 FOR TS 2604 SINLAKU (2604)
1.GENERAL COMMENTS
TS SINLAKU IS LOCATED AT 8.4N, 150.2E. INFORMATION ON THE CURRENT
POSITION IS BASED ON ANIMATED MSI AND SURFACE OBSERVATIONS.
POSITIONAL ACCURACY IS FAIR. CENTRAL PRESSURE IS 996HPA AND
MAXIMUM SUSTAINED WINDS ARE 35KNOTS. THE SYSTEM IS IN A FAVORABLE
ENVIRONMENT FOR DEVELOPMENT UNDER THE INFLUENCE OF HIGH SSTS, HIGH
TCHP, WEAK VWS AND GOOD UPPER-LEVEL OUTFLOW. THIS HAS CAUSED THE
SYSTEM TO DEVELOP OVER THE LAST SIX HOURS. INFORMATION ON THE
CURRENT INTENSITY IS BASED ON DVORAK INTENSITY ANALYSES AND
SURFACE OBSERVATIONS.
2.SYNOPTIC SITUATION
THE SYSTEM IS MOVING WESTWARD BETWEEN TWO MID-LEVEL SUB-TROPICAL
HIGHS. ANIMATED MSI SHOWS CB CLUSTERS GATHERING AROUND THE CSC AND
FORMING A CURVED BAND. WATER VAPOR IMAGERY SHOWS DRY AIR AROUND
THE SYSTEM. GCOM-W/AMSR2 89 GHZ MICROWAVE IMAGERY SHOWS THE SYSTEM
HAS A BAND WITH CURVATURE INDICATING THE CSC.
3.TRACK FORECAST
THE SYSTEM WILL REMAIN ALMOST STATIONARY BETWEEN TWO MID-LEVEL
SUB-TROPICAL HIGHS UNTIL FT48. THE SYSTEM WILL THEN MOVE
NORTHWESTWARD ALONG THE PERIPHERY OF A MID-LEVEL SUB-TROPICAL HIGH
UNTIL FT120. THE TRACK FORECAST IS BASED ON GSM PREDICTIONS, AND
REFERENCE TO OTHER NWP MODELS. TRACK FORECAST CONFIDENCE IS FAIR
BECAUSE ALL NWP MODELS ARE IN CLOSE AGREEMENT.
4.INTENSITY FORECAST
THE SYSTEM WILL DEVELOP UNTIL FT120 DUE TO THE INFLUENCE OF
INTERACTION WITH HIGH SSTS, HIGH TCHP, WEAK VWS AND GOOD
UPPER-LEVEL OUTFLOW. THE INTENSITY FORECAST IS BASED ON A
CONSENSUS OF GUIDANCE DATA INCLUDING GSM.
=

Original Message :

WTPN51 PGTW 092100
WARNING ATCG MIL 04W NWP 260409200714
2026040918 04W SINLAKU 004 01 315 03 SATL 060
T000 084N 1516E 035 R034 080 NE QD 050 SE QD 070 SW QD 090 NW QD
T012 084N 1511E 045 R034 110 NE QD 070 SE QD 090 SW QD 120 NW QD
T024 084N 1508E 055 R050 030 NE QD 040 SE QD 050 SW QD 030 NW QD R034 140 NE QD 110 SE QD 130 SW QD 140 NW QD
T036 087N 1506E 065 R064 020 NE QD 020 SE QD 020 SW QD 010 NW QD R050 040 NE QD 060 SE QD 050 SW QD 030 NW QD R034 160 NE QD 140 SE QD 150 SW QD 150 NW QD
T048 093N 1501E 075 R064 020 NE QD 020 SE QD 020 SW QD 020 NW QD R050 040 NE QD 060 SE QD 050 SW QD 040 NW QD R034 180 NE QD 150 SE QD 160 SW QD 160 NW QD
T072 108N 1481E 095 R064 040 NE QD 040 SE QD 030 SW QD 040 NW QD R050 070 NE QD 060 SE QD 050 SW QD 060 NW QD R034 180 NE QD 170 SE QD 190 SW QD 180 NW QD
T096 126N 1455E 105 R064 050 NE QD 050 SE QD 040 SW QD 050 NW QD R050 080 NE QD 070 SE QD 060 SW QD 070 NW QD R034 200 NE QD 200 SE QD 200 SW QD 190 NW QD
T120 147N 1433E 105 R064 060 NE QD 050 SE QD 050 SW QD 060 NW QD R050 100 NE QD 090 SE QD 080 SW QD 090 NW QD R034 230 NE QD 220 SE QD 200 SW QD 220 NW QD
AMP
SUBJ: TROPICAL STORM 04W (SINLAKU) WARNING NR 004
1. TROPICAL STORM 04W (SINLAKU) WARNING NR 004
UPGRADED FROM TROPICAL DEPRESSION 04W
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
091800Z --- NEAR 8.4N 151.6E
MOVEMENT PAST SIX HOURS - 315 DEGREES AT 03 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
REPEAT POSIT: 8.4N 151.6E
---
FORECASTS:
12 HRS, VALID AT:
100600Z --- 8.4N 151.1E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 270 DEG/ 01 KTS
---
24 HRS, VALID AT:
101800Z --- 8.4N 150.8E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
130 NM SOUTHWEST QUADRANT
140 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 325 DEG/ 02 KTS
---
36 HRS, VALID AT:
110600Z --- 8.7N 150.6E
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
140 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
150 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 320 DEG/ 04 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
111800Z --- 9.3N 150.1E
MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT
150 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 305 DEG/ 06 KTS
---
72 HRS, VALID AT:
121800Z --- 10.8N 148.1E
MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT
170 NM SOUTHEAST QUADRANT
190 NM SOUTHWEST QUADRANT
180 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 305 DEG/ 08 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
131800Z --- 12.6N 145.5E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
200 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
190 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 315 DEG/ 07 KTS
---
120 HRS, VALID AT:
141800Z --- 14.7N 143.3E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 060 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
090 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
220 NM NORTHWEST QUADRANT
---
REMARKS:
092100Z POSITION NEAR 8.4N 151.5E.
09APR26. TROPICAL STORM 04W (SINLAKU), LOCATED APPROXIMATELY 57
NM NORTH-NORTHWEST OF CHUUK, HAS TRACKED NORTHWESTWARD AT 03
KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 091800Z IS 994 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 091800Z IS 16 FEET.
NEXT WARNINGS AT 100300Z, 100900Z, 101500Z AND 102100Z.//
0426040512 30N1609E 15
0426040518 38N1605E 15
0426040600 43N1603E 15
0426040606 40N1600E 15
0426040612 40N1585E 15
0426040618 40N1570E 15
0426040700 41N1562E 15
0426040706 43N1552E 15
0426040712 50N1541E 15
0426040718 57N1534E 15
0426040800 64N1530E 15
0426040806 75N1533E 20
0426040812 80N1530E 20
0426040818 81N1527E 20
0426040900 81N1524E 25
0426040906 81N1522E 30
0426040912 82N1518E 30
0426040918 84N1516E 35
NNNN

Original Message :

WTPQ50 RJTD 091800
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 2604 SINLAKU (2604) UPGRADED FROM TD
ANALYSIS
PSTN 091800UTC 08.4N 150.2E FAIR
MOVE W 10KT
PRES 996HPA
MXWD 035KT
GUST 050KT
30KT 240NM NORTHEAST 180NM SOUTHWEST
FORECAST
24HF 101800UTC 08.4N 149.6E 42NM 70%
MOVE ALMOST STATIONARY
PRES 985HPA
MXWD 050KT
GUST 070KT
48HF 111800UTC 09.2N 149.2E 70NM 70%
MOVE ALMOST STATIONARY
PRES 965HPA
MXWD 070KT
GUST 100KT
72HF 121800UTC 10.8N 147.0E 100NM 70%
MOVE NW 07KT
PRES 945HPA
MXWD 085KT
GUST 120KT
96HF 131800UTC 12.7N 144.5E 125NM 70%
MOVE NW 08KT
PRES 920HPA
MXWD 100KT
GUST 140KT
120HF 141800UTC 14.4N 142.7E 180NM 70%
MOVE NW 06KT
PRES 920HPA
MXWD 100KT
GUST 140KT =

Original Message :

WTJP21 RJTD 091800
WARNING 091800.
WARNING VALID 101800.
WARNING IS UPDATED EVERY 6 HOURS.
STORM WARNING.
TROPICAL STORM 2604 SINLAKU (2604) UPGRADED FROM TROPICAL DEPRESSION
996 HPA
AT 08.4N 150.2E TRUKS MOVING WEST 10 KNOTS.
POSITION FAIR.
MAX WINDS 35 KNOTS NEAR CENTER.
RADIUS OF OVER 30 KNOT WINDS 240 MILES NORTHEAST SEMICIRCLE AND 180
MILES ELSEWHERE.
FORECAST POSITION FOR 101800UTC AT 08.4N 149.6E WITH 42 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
985 HPA, MAX WINDS 50 KNOTS NEAR CENTER.
EXTENDED OUTLOOK.
FORECAST POSITION FOR 111800UTC AT 09.2N 149.2E WITH 70 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
965 HPA, MAX WINDS 70 KNOTS NEAR CENTER.
FORECAST POSITION FOR 121800UTC AT 10.8N 147.0E WITH 100 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
945 HPA, MAX WINDS 85 KNOTS NEAR CENTER.
FORECAST POSITION FOR 131800UTC AT 12.7N 144.5E WITH 125 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.
FORECAST POSITION FOR 141800UTC AT 14.4N 142.7E WITH 180 MILES RADIUS
OF 70 PERCENT PROBABILITY CIRCLE.
920 HPA, MAX WINDS 100 KNOTS NEAR CENTER.

JAPAN METEOROLOGICAL AGENCY.=

Original Message :

WTPQ31 PGUM 091904
TCPPQ1

BULLETIN
Tropical Depression 04W Intermediate Advisory Number 3A
National Weather Service Tiyan GU WP042026
504 AM ChST Fri Apr 10 2026

...TROPICAL DEPRESSION FOUR DRIFTING SLOWLY WESTWARD...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning is now in effect for Fananu and Ulul in
Chuuk State. A Tropical Storm Warning means that tropical storm
conditions, including damaging winds of 39 to 73 mph, are
expected within the next 48 hours.

A Typhoon Watch is now in effect for Ulul in Chuuk State. A Typhoon
Watch means that typhoon conditions, including winds of 74 mph or
greater, are possible within 48 hours.

A Tropical Storm Watch is in effect for Chuuk in Chuuk State. A
Tropical Storm Watch means that tropical storm conditions, including
damaging winds of 39 to 73 mph, are possible within the next 48
hours.

Residents of Guam, Rota, Tinian and Saipan should carefully monitor
the progress of Tropical Depression 04W.

SUMMARY OF 400 AM CHST...1800 UTC...INFORMATION
-----------------------------------------------
Location...8.4N 151.6E

About 45 miles west-southwest of Fananu
About 65 miles north-northwest of Chuuk
About 130 miles east of Ulul
About 195 miles east-northeast of Puluwat
About 320 miles east-northeast of Satawal
About 485 miles east of Faraulep
About 580 miles southeast of Guam
About 610 miles southeast of Saipan
About 925 miles east of Yap

Maximum sustained winds...35 mph
Present movement...west...270 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 400 AM CHST...1800 UTC...the center of Tropical Depression 04W
was located near Latitude 8.4 degrees North and Longitude
151.6 degrees East. 04W is moving west at 3 mph. It is expected to
turn toward the northwest with little change in forward speed through
Saturday. This general forecast track will take TD 04W about 20 miles
south of Guam with maximum wind speeds of almost 140 mph.

Maximum sustained winds remain at 35 mph. 04W is forecast to intensify
through Saturday likely becoming a tropical storm later today.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National
Weather Service at 800 AM ChST followed by an intermediate
advisory at 1100 AM ChST.

$$

Stanko

Original Message :

WTPQ31 PGUM 091527
TCPPQ1

BULLETIN
Tropical Depression 04W Advisory Number 3
National Weather Service Tiyan GU WP042026
127 AM ChST Fri Apr 10 2026

...TROPICAL DEPRESSION FOUR DRIFTING SLOWLY WESTWARD...

CHANGES WITH THIS ADVISORY
--------------------------
None.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning is now in effect for Fananu and Ulul in
Chuuk State. A Tropical Storm Warning means that tropical storm
conditions, including damaging winds of 39 to 73 mph, are
expected within the next 48 hours.

A Typhoon Watch is now in effect for Ulul in Chuuk State. A Typhoon
Watch means that typhoon conditions, including winds of 74 mph or
greater, are possible within 48 hours.

A Tropical Storm Watch is in effect for Chuuk in Chuuk State. A
Tropical Storm Watch means that tropical storm conditions, including
damaging winds of 39 to 73 mph, are possible within the next 48
hours.

Residents of Guam, Rota, Tinian and Saipan should carefully monitor
the progress of Tropical Depression 04W.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
Location...8.1N 151.6E

About 45 miles north-northwest of Chuuk
About 55 miles southwest of Fananu
About 135 miles east-southeast of Ulul
About 190 miles east-northeast of Puluwat
About 315 miles east of Satawal
About 485 miles east of Faraulep
About 590 miles southeast of Guam
About 625 miles southeast of Saipan
About 925 miles east of Yap

Maximum sustained winds...35 mph
Present movement...west...270 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 AM CHST...1500 UTC...the center of Tropical Depression 04W
was located near Latitude 8.1 degrees North and Longitude
151.6 degrees East. 04W is moving west at 3 mph. It is expected to
turn toward the northwest with little change in forward speed through
Saturday. This general forecast track will take TD 04W about 20 miles
south of Guam with maximum wind speeds of almost 140 mph.

Maximum sustained winds remain at 35 mph. 04W is forecast to
intensify through Saturday likely becoming a tropical storm later
today.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 AM ChST followed by the next scheduled advisory at
800 AM ChST.

$$

Stanko

Original Message :

WTPQ31 PGUM 091345
TCPPQ1

BULLETIN
TROPICAL DEPRESSION 04W INTERMEDIATE ADVISORY NUMBER 2A
NATIONAL WEATHER SERVICE TIYAN GU WP042026
1145 PM CHST THU APR 9 2026

...TROPICAL DEPRESSION 04W MOVING VERY SLOWLY WEST...

CHANGES WITH THIS ADVISORY
--------------------------
NONE.

WATCHES AND WARNINGS
--------------------
A TROPICAL STORM WARNING IS NOW IN EFFECT FOR FANANU AND ULUL IN
CHUUK STATE. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM
CONDITIONS, INCLUDING DAMAGING WINDS OF 39 TO 73 MPH, ARE
EXPECTED WITHIN THE NEXT 48 HOURS. A TYPHOON WATCH IS NOW IN
EFFECT FOR ULUL IN CHUUK STATE. A TYPHOON WATCH MEANS THAT
TYPHOON CONDITIONS, INCLUDING WINDS OF 74 MPH OR GREATER, ARE
POSSIBLE WITHIN 48 HOURS. A TROPICAL STORM WATCH IS IN EFFECT
FOR CHUUK IN CHUUK STATE. A TROPICAL STORM WATCH MEANS THAT
TROPICAL STORM CONDITIONS, INCLUDING DAMAGING WINDS OF 39 TO
73 MPH, ARE POSSIBLE WITHIN THE NEXT 48 HOURS.

RESIDENTS OF GUAM, ROTA, TINIAN AND SAIPAN SHOULD CAREFULLY MONITOR
THE PROGRESS OF TROPICAL DEPRESSION 04W.

SUMMARY OF 100 AM CHST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...8.1N 151.8E

ABOUT 45 MILES SOUTHWEST OF FANANU
ABOUT 45 MILES NORTH OF CHUUK
ABOUT 105 MILES NORTHWEST OF LOSAP
ABOUT 150 MILES EAST-SOUTHEAST OF ULUL
ABOUT 200 MILES EAST-NORTHEAST OF PULUWAT
ABOUT 605 MILES SOUTHEAST OF GUAM
ABOUT 635 MILES SOUTHEAST OF SAIPAN
ABOUT 940 MILES EAST OF YAP

MAXIMUM SUSTAINED WINDS...35 MPH
PRESENT MOVEMENT...WEST...270 DEGREES AT 3 MPH

DISCUSSION AND OUTLOOK
----------------------
AT 1100 AM CHST...1200 UTC...THE CENTER OF TROPICAL DEPRESSION 04W
WAS LOCATED NEAR LATITUDE 8.1 DEGREES NORTH AND LONGITUDE
151.8 DEGREES EAST. 04W IS MOVING WEST AT 3 MPH. IT IS EXPECTED
TO MAINTAIN THIS GENERAL COURSE AND SPEED THROUGH FRIDAY.

MAXIMUM SUSTAINED WINDS REMAIN AT 35 MPH. 04W IS FORECAST TO
INTENSIFY THROUGH FRIDAY POSSIBLY BECOMING A TROPICAL STORM.

FORECAST TRACK AND WIND SPEED PROBABILITIES GRAPHICS POSTED TO WFO
GUAM'S WEB PAGE ARE CURRENTLY UNAVAILABLE. PLEASE VISIT THE JOINT
TYPHOON WARNING CENTER WEB PAGE AT
HTTPS://WWW.METOC.NAVY.MIL/JTWC/JTWC.HTML TO SEE THEIR LATEST
FORECAST TRACK ON TD 04W.

NEXT ADVISORY
-------------
THE NEXT SCHEDULED ADVISORY WILL BE ISSUED BY THE NATIONAL
WEATHER SERVICE AT 200 AM CHST EARLY FRIDAY MORNING FOLLOWED BY
AN INTERMEDIATE ADVISORY AT 500 AM CHST.

$$

STANKO=

Original Message :

WTPQ31 PGUM 091015
TCPPQ1

BULLETIN
Tropical Depression 04W Advisory Number 2
National Weather Service Tiyan GU WP042026
815 PM ChST Thu Apr 9 2026

...TROPICAL DEPRESSION 04W MOVING VERY SLOWLY WEST...

CHANGES WITH THIS ADVISORY
--------------------------
The Tropical Storm Watches for Fananu and Ulul in Chuuk State are
upgraded to a warning.

A Typhoon Watch is now in effect for Ulul in Chuuk State.

A Tropical Storm Watch is now in effect for Chuuk in Chuuk State.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Warning is now in effect for Fananu and Ulul in
Chuuk State.

A Tropical Storm Warning means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are expected within the
next 48 hours.

A Typhoon Watch is now in effect for Ulul in Chuuk State.

A Typhoon Watch means that typhoon conditions, including winds of
74 mph or greater, are possible within 48 hours.

A Tropical Storm Watch is in effect for Chuuk in Chuuk State.

A Tropical Storm Watch means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are possible within the
next 48 hours.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...8.1N 151.9E

About 40 miles southwest of Fananu
About 45 miles north of Chuuk
About 105 miles north-northwest of Losap
About 155 miles east-southeast of Ulul
About 205 miles east-northeast of Puluwat
About 610 miles southeast of Guam
About 640 miles southeast of Saipan
About 945 miles east of Yap

Maximum sustained winds...35 mph
Present movement...west...270 degrees at 3 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Tropical Depression 04W
was located near Latitude 8.1 degrees North and Longitude 151.9
degrees East. 04W is moving west at 3 mph. It is expected to
toward the northwest over the next few days with little change in
speed.

Maximum sustained winds have increased to 35 mph. 04W is forecast
to intensify over the next few days, possibly becoming a tropical
storm Friday and possibly becoming a typhoon Saturday.

Forecast track and wind speed probabilities graphics posted to WFO
Guam's web page are currently unavailable. Please visit the Joint
Typhoon Warning Center web page at
https://www.metoc.navy.mil/jtwc/jtwc.html to see their latest
forecast track on TD 04W.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 1100 PM ChST followed by the next scheduled advisory
at 200 AM ChST early Friday morning.

$$

Kleeschulte

Original Message :

WTPQ31 PGUM 090731 CCA
TCPPQ1

BULLETIN...CORRECTED
Tropical Depression 04W Special Advisory Number 1A
National Weather Service Tiyan GU WP042026
531 PM ChST Thu Apr 9 2026

Corrected time.

...TROPICAL DEPRESSION 04W RELOCATED SOUTH-SOUTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
A Tropical Storm Watch is now in effect for Ulul in Chuuk State.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Watch is now in effect for Fananu and Ulul in
Chuuk State.

A Tropical Storm Watch means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are possible within the
next 48 hours.

SUMMARY OF 400 PM CHST...0600 UTC...INFORMATION
-----------------------------------------------
Location...8.1N 152.1E

About 35 miles south-southwest of Fananu
About 50 miles north-northeast of Chuuk
About 95 miles north-northwest of Losap
About 170 miles east-southeast of Ulul
About 220 miles east-northeast of Puluwat
About 620 miles southeast of Guam
About 650 miles southeast of Saipan
About 960 miles east of Yap

Maximum sustained winds...30 mph
Present movement...west...270 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 400 PM CHST...0600 UTC...the center of Tropical Depression 04W
was located near Latitude 8.1 degrees North and Longitude 152.1
degrees East. 04W has relocated to the south-southeast, however, the
system is moving west at 5 mph. It is expected to slowly turn toward
the northwest with a decrease in forward speed over the next few
days.

Maximum sustained winds remain at 30 mph. 04W is forecast to
intensify over the next several days, possibly becoming a tropical
storm Friday.

Forecast track and wind speed probabilities graphics posted to WFO
Guam's web page are currently unavailable. Please visit the Joint
Typhoon Warning Center web page at
https://www.metoc.navy.mil/jtwc/jtwc.html to see their latest
forecast track on TD 04W.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 800 PM ChST followed by an intermediate advisory at 1100
PM ChST.

$$

Kleeschulte

Original Message :

WTPQ31 PGUM 090707
TCPPQ1

BULLETIN
Tropical Depression 04W Special Advisory Number 1A
National Weather Service Tiyan GU WP042026
507 PM ChST Thu Apr 9 2026

...TROPICAL DEPRESSION 04W RELOCATED SOUTH-SOUTHEAST...

CHANGES WITH THIS ADVISORY
--------------------------
A Tropical Storm Watch is now in effect for Ulul in Chuuk State.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Watch is now in effect for Fananu and Ulul in
Chuuk State.

A Tropical Storm Watch means that tropical storm conditions,
including damaging winds of 39 to 73 mph, are possible within the
next 48 hours.

SUMMARY OF 700 PM CHST...0900 UTC...INFORMATION
-----------------------------------------------
Location...8.1N 152.1E

About 35 miles south-southwest of Fananu
About 50 miles north-northeast of Chuuk
About 95 miles north-northwest of Losap
About 170 miles east-southeast of Ulul
About 220 miles east-northeast of Puluwat
About 620 miles southeast of Guam
About 650 miles southeast of Saipan
About 960 miles east of Yap

Maximum sustained winds...30 mph
Present movement...west...270 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 700 PM CHST...0900 UTC...the center of Tropical Depression 04W
was located near Latitude 8.1 degrees North and Longitude 152.1
degrees East. 04W has relocated to the south-southeast, however, the
system is moving west at 5 mph. It is expected to slowly turn toward
the northwest with a decrease in forward speed over the next few
days.

Maximum sustained winds remain at 30 mph. 04W is forecast to
intensify over the next several days, possibly becoming a tropical
storm Friday.

Forecast track and wind speed probabilities graphics posted to WFO
Guam's web page are currently unavailable. Please visit the Joint
Typhoon Warning Center web page at
https://www.metoc.navy.mil/jtwc/jtwc.html to see their latest
forecast track on TD 04W.

NEXT ADVISORY
-------------
The next scheduled advisory will be issued by the National Weather
Service at 800 PM ChST followed by an intermediate advisory at 1100
PM ChST.

$$

Kleeschulte

Original Message :

WTPQ31 PGUM 090447 CCA
TCPPQ1

BULLETIN...CORRECTED
Tropical Depression 04W Advisory Number 1
National Weather Service Tiyan GU WP042026
247 PM ChST Thu Apr 9 2026

Corrected to add graphics information in Discussion and Outlook.

...TROPICAL DEPRESSION 04W FORMS WEST-NORTHWEST OF FANANU...

CHANGES WITH THIS ADVISORY
--------------------------
Tropical Depression 04W forms west-northwest of Fananu.
A Tropical Storm Watch is now in effect for Fananu in Chuuk State.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Watch is now in effect for Fananu in Chuuk State.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...8.7N 152.0E

About 20 miles west-northwest of Fananu
About 85 miles north of Chuuk
About 135 miles north-northwest of Losap
About 160 miles east of Ulul
About 230 miles east-northeast of Puluwat
About 590 miles southeast of Guam
About 615 miles southeast of Saipan
About 785 miles west-northwest of Kosrae
About 950 miles east of Yap

Maximum sustained winds...30 mph
Present movement...west...270 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Tropical Depression 04W
was located near Latitude 8.7 degrees North and Longitude
152.0 degrees East. 04W is moving west at 5 mph. It is expected
to gradually turn toward the northwest with a decrease in forward
speed over the next couple of days.

Maximum sustained winds are 30 mph. 04W is forecast to intensify
over the next few days, possibly becoming a tropical storm
Friday afternoon.

Forecast track and wind speed probabilities graphics posted to WFO
Guam's web page are currently unavailable. Please visit the Joint
Typhoon Warning Center web page at
https://www.metoc.navy.mil/jtwc/jtwc.html to see their latest
forecast track on TD 04W.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST this afternoon, followed by the next scheduled
advisory at 800 PM.

$$

Kleeschulte

Original Message :

WTPQ31 PGUM 090330
TCPPQ1

BULLETIN
Tropical Depression 04W Advisory Number 1
National Weather Service Tiyan GU WP042026
130 PM ChST Thu Apr 9 2026

...TROPICAL DEPRESSION 04W FORMS WEST-NORTHWEST OF FANANU...

CHANGES WITH THIS ADVISORY
--------------------------
Tropical Depression 04W forms west-northwest of Fananu.
A Tropical Storm Watch is now in effect for Fananu in Chuuk State.

WATCHES AND WARNINGS
--------------------
A Tropical Storm Watch is now in effect for Fananu in Chuuk State.

SUMMARY OF 100 PM CHST...0300 UTC...INFORMATION
-----------------------------------------------
Location...8.7N 152.0E

About 20 miles west-northwest of Fananu
About 85 miles north of Chuuk
About 135 miles north-northwest of Losap
About 160 miles east of Ulul
About 230 miles east-northeast of Puluwat
About 590 miles southeast of Guam
About 615 miles southeast of Saipan
About 785 miles west-northwest of Kosrae
About 950 miles east of Yap

Maximum sustained winds...30 mph
Present movement...west...270 degrees at 5 mph

DISCUSSION AND OUTLOOK
----------------------
At 100 PM CHST...0300 UTC...the center of Tropical Depression 04W
was located near Latitude 8.7 degrees North and Longitude
152.0 degrees East. 04W is moving west at 5 mph. It is expected
to gradually turn toward the northwest with a decrease in forward
speed over the next couple of days.

Maximum sustained winds are 30 mph. 04W is forecast to intensify
over the next few days, possibly becoming a tropical storm
Friday afternoon.

NEXT ADVISORY
-------------
An intermediate advisory will be issued by the National Weather
Service at 500 PM ChST this afternoon, followed by the next scheduled
advisory at 800 PM.

$$

Kleeschulte

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