WTPN31 PGTW 162100

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

SUBJ/TROPICAL CYCLONE WARNING//

RMKS/

1. TROPICAL STORM 09W (CHANTHU) 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:

   161800Z --- NEAR 36.2N 141.2E

     MOVEMENT PAST SIX HOURS - 010 DEGREES AT 10 KTS

     POSITION ACCURATE TO WITHIN 030 NM

     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF

     SATELLITE AND RADAR

   PRESENT WIND DISTRIBUTION:

   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   BECOMING EXTRATROPICAL

   REPEAT POSIT: 36.2N 141.2E

    ---

   FORECASTS:

   12 HRS, VALID AT:

   170600Z --- 41.0N 142.6E

   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   BECOMING EXTRATROPICAL

   VECTOR TO 24 HR POSIT: 010 DEG/ 33 KTS

    ---

   24 HRS, VALID AT:

   171800Z --- 47.5N 144.6E

   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   EXTRATROPICAL

   VECTOR TO 36 HR POSIT: 010 DEG/ 32 KTS

    ---

   36 HRS, VALID AT:

   180600Z --- 53.7N 146.9E

   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT

   WIND RADII VALID OVER OPEN WATER ONLY

   EXTRATROPICAL

    ---

REMARKS:

162100Z POSITION NEAR 37.4N 141.6E.

TROPICAL STORM 09W (CHANTHU), LOCATED APPROXIMATELY 91 NM

NORTHEAST OF YOKOSUKA, JAPAN, HAS TRACKED  AT 10 KNOTS OVER THE

PAST SIX HOURS.

MAXIMUM SIGNIFICANT WAVE HEIGHT AT 161800Z IS 13 FEET. NEXT

WARNINGS AT 170300Z, 170900Z, 171500Z AND 172100Z.

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