WTPN31 PGTW 220900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 04W (PRAPIROON) WARNING NR 011// RMKS/ 1. TROPICAL STORM 04W (PRAPIROON) WARNING NR 011 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 220600Z --- NEAR 20.1N 108.7E MOVEMENT PAST SIX HOURS - 315 DEGREES AT 07 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT REPEAT POSIT: 20.1N 108.7E --- FORECASTS: 12 HRS, VALID AT: 221800Z --- 21.0N 108.0E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 315 DEG/ 04 KTS --- 24 HRS, VALID AT: 230600Z --- 21.6N 107.3E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 300 DEG/ 04 KTS --- 36 HRS, VALID AT: 231800Z --- 22.0N 106.6E 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 48 HR POSIT: 240 DEG/ 02 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 240600Z --- 21.8N 106.2E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 220900Z POSITION NEAR 20.3N 108.5E. 22JUL24. TROPICAL STORM 04W (PRAPIROON), LOCATED APPROXIMATELY 166 NM EAST-SOUTHEAST OF HANOI, VIETNAM, HAS TRACKED NORTHWESTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 220600Z IS 987 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 220600Z IS 18 FEET. NEXT WARNINGS AT 221500Z, 222100Z, 230300Z AND 230900Z. REFER TO TROPICAL STORM 05W (GAEMI) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.// NNNN