Overall Green alert Tropical Cyclone for FOUR-21
in India

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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Original Message :

WTIO31 PGTW 111500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 04B (FOUR) WARNING NR 002//
RMKS/
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
111200Z --- NEAR 13.1N 80.0E
MOVEMENT PAST SIX HOURS - 275 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 015 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
REPEAT POSIT: 13.1N 80.0E
---
FORECASTS:
12 HRS, VALID AT:
120000Z --- 13.3N 79.2E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 290 DEG/ 03 KTS
---
24 HRS, VALID AT:
121200Z --- 13.5N 78.6E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
111500Z POSITION NEAR 13.1N 79.8E.
11NOV21. TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 13
NM WEST OF CHENNAI, INDIA, HAS TRACKED WESTWARD AT 09 KNOTS
OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
(MSI) DEPICTS A LARGE AREA OF DEEP CONVECTION SHEARED TO THE WEST OF
A FULLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) AS IT MADE
LANDFALL NEAR CHENNAI, INDIA. WEATHER OBSERVATIONS FROM CHENNAI HAVE
SHOWN A DECREASE AND RISE IN SURFACE PRESSURE OVER THE PAST THREE
HOURS INDICATING TC 04B HAS MADE ITS WAY OVER LAND. THE INITIAL
POSITION IS PLACED WITH HIGH CONFIDENCE BASED ON THE AFOREMENTIONED
MSI LOOP AND AN 111045Z SSMIS 91 GHZ IMAGE. THE INITIAL INTENSITY OF
30 KTS IS ASSESSED WITH MEDIUM CONFIDENCE HEDGED SLIGHTLY HIGHER
THAN PGTW AND DEMS DVORAK ESTIMATES OF 1.5 (25 KTS) AT THE 0900Z
ANALYSIS WHILE TC 04B WAS STILL OVER WATER. SURFACE WIND
OBSERVATIONS FROM CHENNAI AT THE TIME OF LANDFALL WERE 25 KTS WITH
GUSTS TO 40 KTS. TC 04B WILL CONTINUE TO WEAKEN AS IT PASSES OVER
THE TERRAIN OF SOUTHERN INDIA OVER THE NEXT 24 HOURS. THE REMNANTS
OF TC 04B WILL CONTINUE TRACKING WEST-NORTHWESTWARD OVER SOUTHERN
INDIA AND MAY MOVE OVER THE ARABIAN SEA, HOWEVER, THERE IS LOW
PROBABILITY OF REGENERATION. MODEL GUIDANCE IS IN GOOD AGREEMENT
THAT TC 04B WILL CONTINUE TRACKING WEST-NORTHWESTWARD OVER LAND,
WITH AFUM BEING THE OUTLIER SHOWING A SOUTHWESTWARD TRACK. THE JTWC
FORECAST TRACK IS PLACED WITH HIGH CONFIDENCE SLIGHTLY RIGHT OF
MODEL CONSENSUS DUE TO AFUM?S ERRATIC MOTION TO THE SOUTHWEST. THE
INTENSITY GUIDANCE IS IN GOOD AGREEMENT SHOWING STEADY WEAKENING DUE
TO TERRAIN INTERACTION, LENDING HIGH CONFIDENCE IN THE JTWC
INTENSITY FORECAST. 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. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 111200Z IS 11 FEET.//
NNNN

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Original Message :

WTIO51 PGTW 111500
WARNING ATCG MIL 04B NIO 211111124822
2021111112 04B FOUR 002 01 275 09 SATL 015
T000 131N 0800E 030
T012 133N 0792E 025
T024 135N 0786E 020
AMP 000HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
012HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
111200Z --- NEAR 13.1N 80.0E
MOVEMENT PAST SIX HOURS - 275 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 015 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
REPEAT POSIT: 13.1N 80.0E
---
FORECASTS:
12 HRS, VALID AT:
120000Z --- 13.3N 79.2E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 290 DEG/ 03 KTS
---
24 HRS, VALID AT:
121200Z --- 13.5N 78.6E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
111500Z POSITION NEAR 13.1N 79.8E.
11NOV21. TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 13
NM WEST OF CHENNAI, INDIA, HAS TRACKED WESTWARD AT 09 KNOTS
OVER THE PAST SIX HOURS. 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. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 111200Z IS 11 FEET.
//
0421110800 52N 923E 20
0421110806 61N 914E 20
0421110812 72N 901E 20
0421110818 76N 896E 20
0421110900 79N 890E 20
0421110906 86N 881E 20
0421110912 94N 873E 20
0421110918 97N 868E 20
0421111000 99N 859E 20
0421111006 104N 843E 25
0421111012 109N 832E 25
0421111018 122N 821E 30
0421111100 126N 816E 30
0421111106 130N 809E 35
0421111112 131N 800E 30
NNNN

>

Original Message :

WTIO51 PGTW 110900
WARNING ATCG MIL 04B NIO 211111065853
2021111106 04B FOUR 001 01 300 08 SATL 040
T000 130N 0809E 035 R034 020 NE QD 025 SE QD 035 SW QD 025 NW QD
T012 134N 0797E 030
T024 138N 0787E 020
AMP
012HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
110600Z --- NEAR 13.0N 80.9E
MOVEMENT PAST SIX HOURS - 300 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 040 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 - 020 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
REPEAT POSIT: 13.0N 80.9E
---
FORECASTS:
12 HRS, VALID AT:
111800Z --- 13.4N 79.7E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 290 DEG/ 05 KTS
---
24 HRS, VALID AT:
120600Z --- 13.8N 78.7E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
110900Z POSITION NEAR 13.1N 80.6E.
11NOV21. TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 717
NM SOUTHWEST OF KOLKATA, INDIA, HAS TRACKED WEST-NORTHWESTWARD AT
08 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 110600Z IS 12 FEET. NEXT WARNINGS AT 112100Z.//
0421110800 52N 923E 20
0421110806 61N 914E 20
0421110812 72N 901E 20
0421110818 76N 896E 20
0421110900 79N 890E 20
0421110906 86N 881E 20
0421110912 94N 873E 20
0421110918 97N 868E 20
0421111000 99N 859E 20
0421111006 104N 843E 25
0421111012 109N 832E 25
0421111018 122N 821E 30
0421111100 126N 816E 30
0421111106 130N 809E 35
NNNN

>

Original Message :

WTIO31 PGTW 110900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 04B (FOUR) WARNING NR 001//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/101921ZNOV2021//
AMPN/REF A IS A TROPICAL CYCLON FORMATION ALERT.//
RMKS/
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
110600Z --- NEAR 13.0N 80.9E
MOVEMENT PAST SIX HOURS - 300 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 040 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 - 020 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
REPEAT POSIT: 13.0N 80.9E
---
FORECASTS:
12 HRS, VALID AT:
111800Z --- 13.4N 79.7E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 290 DEG/ 05 KTS
---
24 HRS, VALID AT:
120600Z --- 13.8N 78.7E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
110900Z POSITION NEAR 13.1N 80.6E.
11NOV21. TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 717
NM SOUTHWEST OF KOLKATA, INDIA, HAS TRACKED WEST-NORTHWESTWARD AT
08 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 110600Z IS 12 FEET. NEXT WARNINGS AT 112100Z.
2. THIS CANCELS AND SUPERSEDES REF A (WTIO21 PGTW 101930).//
NNNN

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