WTPN31 PGTW 032100 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 04W (CHOI-WAN) WARNING NR 021// RMKS/ 1. TROPICAL STORM 04W (CHOI-WAN) 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: 031800Z --- NEAR 19.5N 118.5E MOVEMENT PAST SIX HOURS - 015 DEGREES AT 09 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 115 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT REPEAT POSIT: 19.5N 118.5E --- FORECASTS: 12 HRS, VALID AT: 040600Z --- 21.5N 120.0E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 010 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 040 DEG/ 13 KTS --- 24 HRS, VALID AT: 041800Z --- 23.5N 121.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 36 HR POSIT: 045 DEG/ 22 KTS --- 36 HRS, VALID AT: 050600Z --- 26.5N 125.3E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 48 HR POSIT: 055 DEG/ 26 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 051800Z --- 29.5N 130.2E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 032100Z POSITION NEAR 20.0N 118.9E. 03JUN21. TROPICAL STORM 04W (CHOI-WAN), LOCATED APPROXIMATELY 375 NM SOUTH-SOUTHWEST OF TAIPEI, TAIWAN, HAS TRACKED NORTH- NORTHEASTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 031800Z IS 15 FEET. NEXT WARNINGS AT 040300Z, 040900Z, 041500Z AND 042100Z. //NNNN NNNN