WTPN31 PGTW 180900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL STORM 24W (SARIKA) WARNING NR 024 DOWNGRADED FROM TYPHOON 24W 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 180600Z --- NEAR 19.2N 109.9E MOVEMENT PAST SIX HOURS - 300 DEGREES AT 09 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 065 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 135 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 135 NM NORTHWEST QUADRANT REPEAT POSIT: 19.2N 109.9E --- FORECASTS: 12 HRS, VALID AT: 181800Z --- 20.2N 108.7E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 125 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 315 DEG/ 07 KTS --- 24 HRS, VALID AT: 190600Z --- 21.2N 107.7E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 350 DEG/ 07 KTS --- 36 HRS, VALID AT: 191800Z --- 22.6N 107.4E 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: 025 DEG/ 06 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 200600Z --- 23.7N 107.9E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 180900Z POSITION NEAR 19.5N 109.6E. TROPICAL STORM 24W (SARIKA), LOCATED APPROXIMATELY 250 NM EAST- SOUTHEAST OF HANOI, VIETNAM, HAS TRACKED WEST-NORTHWESTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. NEXT WARNINGS AT 181500Z, 182100Z, 190300Z AND 190900Z. REFER TO SUPER TYPHOON 25W (HAIMA) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES. //