WTPN31 PGTW 012000

MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//

SUBJ/TROPICAL CYCLONE WARNING//

RMKS/

1. TYPHOON 17W (SANVU) WARNING NR 018

   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC

   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE

   WIND RADII VALID OVER OPEN WATER ONLY

    ---

   WARNING POSITION:

   011800Z --- NEAR 28.6N 143.9E

     MOVEMENT PAST SIX HOURS - 035 DEGREES AT 06 KTS

     POSITION ACCURATE TO WITHIN 020 NM

     POSITION BASED ON EYE FIXED BY SATELLITE

   PRESENT WIND DISTRIBUTION:

   MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   RADIUS OF 064 KT WINDS - 070 NM NORTHEAST QUADRANT

                            075 NM SOUTHEAST QUADRANT

                            035 NM SOUTHWEST QUADRANT

                            035 NM NORTHWEST QUADRANT

   RADIUS OF 050 KT WINDS - 095 NM NORTHEAST QUADRANT

                            100 NM SOUTHEAST QUADRANT

                            085 NM SOUTHWEST QUADRANT

                            075 NM NORTHWEST QUADRANT

   RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT

                            165 NM SOUTHEAST QUADRANT

                            135 NM SOUTHWEST QUADRANT

                            135 NM NORTHWEST QUADRANT

   REPEAT POSIT: 28.6N 143.9E

    ---

   FORECASTS:

   12 HRS, VALID AT:

   020600Z --- 31.1N 145.5E

   MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   RADIUS OF 064 KT WINDS - 055 NM NORTHEAST QUADRANT

                            065 NM SOUTHEAST QUADRANT

                            015 NM SOUTHWEST QUADRANT

                            010 NM NORTHWEST QUADRANT

   RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT

                            110 NM SOUTHEAST QUADRANT

                            050 NM SOUTHWEST QUADRANT

                            035 NM NORTHWEST QUADRANT

   RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT

                            255 NM SOUTHEAST QUADRANT

                            175 NM SOUTHWEST QUADRANT

                            180 NM NORTHWEST QUADRANT

   VECTOR TO 24 HR POSIT: 025 DEG/ 23 KTS

    ---

   24 HRS, VALID AT:

   021800Z --- 35.2N 148.1E

   MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT

                            070 NM SOUTHEAST QUADRANT

                            010 NM SOUTHWEST QUADRANT

                            005 NM NORTHWEST QUADRANT

   RADIUS OF 050 KT WINDS - 110 NM NORTHEAST QUADRANT

                            140 NM SOUTHEAST QUADRANT

                            055 NM SOUTHWEST QUADRANT

                            025 NM NORTHWEST QUADRANT

   RADIUS OF 034 KT WINDS - 245 NM NORTHEAST QUADRANT

                            305 NM SOUTHEAST QUADRANT

                            205 NM SOUTHWEST QUADRANT

                            250 NM NORTHWEST QUADRANT

   VECTOR TO 36 HR POSIT: 030 DEG/ 32 KTS

    ---

   36 HRS, VALID AT:

   030600Z --- 40.7N 152.1E

   MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   BECOMING EXTRATROPICAL

   RADIUS OF 050 KT WINDS - 105 NM NORTHEAST QUADRANT

                            120 NM SOUTHEAST QUADRANT

                            050 NM SOUTHWEST QUADRANT

                            025 NM NORTHWEST QUADRANT

   RADIUS OF 034 KT WINDS - 255 NM NORTHEAST QUADRANT

                            325 NM SOUTHEAST QUADRANT

                            270 NM SOUTHWEST QUADRANT

                            295 NM NORTHWEST QUADRANT

   VECTOR TO 48 HR POSIT: 030 DEG/ 31 KTS

    ---

   EXTENDED OUTLOOK:

   48 HRS, VALID AT:

   031800Z --- 46.1N 156.4E

   MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   EXTRATROPICAL

   RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT

                            070 NM SOUTHEAST QUADRANT

                            035 NM SOUTHWEST QUADRANT

                            055 NM NORTHWEST QUADRANT

   RADIUS OF 034 KT WINDS - 305 NM NORTHEAST QUADRANT

                            345 NM SOUTHEAST QUADRANT

                            320 NM SOUTHWEST QUADRANT

                            275 NM NORTHWEST QUADRANT

    ---

REMARKS:

012100Z POSITION NEAR 29.2N 144.3E.

TYPHOON 17W (SANVU), LOCATED APPROXIMATELY 127 NM NORTHEAST OF

CHICHI JIMA, JAPAN, HAS TRACKED NORTHEASTWARD AT 06 KNOTS OVER

THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 011800Z

IS 28 FEET. NEXT WARNINGS AT 020300Z, 020900Z, 021500Z AND 022100Z.

REFER TO TROPICAL STORM 18W (MAWAR) WARNINGS (WTPN32 PGTW)

FOR SIX-HOURLY UPDATES.//