WTPN31 PGTW 030300 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 04W (CHOI-WAN) WARNING NR 018// RMKS/ 1. TROPICAL STORM 04W (CHOI-WAN) WARNING NR 018 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: 030000Z --- NEAR 16.3N 119.4E MOVEMENT PAST SIX HOURS - 345 DEGREES AT 15 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE, RADAR 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 - 020 NM NORTHEAST QUADRANT 015 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT REPEAT POSIT: 16.3N 119.4E --- FORECASTS: 12 HRS, VALID AT: 031200Z --- 18.5N 119.0E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 025 DEG/ 11 KTS --- 24 HRS, VALID AT: 040000Z --- 20.4N 120.0E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 000 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 045 DEG/ 14 KTS --- 36 HRS, VALID AT: 041200Z --- 22.4N 122.1E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 48 HR POSIT: 045 DEG/ 18 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 050000Z --- 24.9N 124.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 72 HR POSIT: 050 DEG/ 10 KTS --- 72 HRS, VALID AT: 060000Z --- 27.4N 128.5E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 96 HR POSIT: 060 DEG/ 12 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 070000Z --- 29.7N 133.2E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL VECTOR TO 120 HR POSIT: 055 DEG/ 16 KTS --- 120 HRS, VALID AT: 080000Z --- 33.0N 139.4E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 030300Z POSITION NEAR 16.9N 119.3E. 03JUN21. TROPICAL STORM 04W (CHOI-WAN), LOCATED APPROXIMATELY 541 NM SOUTH-SOUTHWEST OF TAIPEI, TAIWAN, HAS TRACKED NORTH- NORTHWESTWARD AT 15 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 030000Z IS 14 FEET. NEXT WARNINGS AT 030900Z, 031500Z, 032100Z AND 040300Z. // NNNN