WTPN31 PGTW 180900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 04W (SINLAKU) WARNING NR 038// RMKS/ 1. TROPICAL STORM 04W (SINLAKU) WARNING NR 038 DOWNGRADED FROM TYPHOON 04W 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 180600Z --- NEAR 23.3N 146.8E MOVEMENT PAST SIX HOURS - 020 DEGREES AT 12 KTS POSITION ACCURATE TO WITHIN 040 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 - 055 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 235 NM NORTHEAST QUADRANT 220 NM SOUTHEAST QUADRANT 180 NM SOUTHWEST QUADRANT 230 NM NORTHWEST QUADRANT REPEAT POSIT: 23.3N 146.8E --- FORECASTS: 12 HRS, VALID AT: 181800Z --- 25.5N 148.4E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT 210 NM SOUTHEAST QUADRANT 170 NM SOUTHWEST QUADRANT 160 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 055 DEG/ 17 KTS --- 24 HRS, VALID AT: 190600Z --- 27.5N 151.5E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT 220 NM SOUTHEAST QUADRANT 200 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 070 DEG/ 22 KTS --- 36 HRS, VALID AT: 191800Z --- 29.0N 156.1E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT 220 NM SOUTHEAST QUADRANT 220 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 080 DEG/ 24 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 200600Z --- 29.8N 161.5E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT 220 NM SOUTHEAST QUADRANT 240 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT --- REMARKS: 180900Z POSITION NEAR 23.9N 147.2E. 18APR26. TROPICAL STORM 04W (SINLAKU), LOCATED APPROXIMATELY 314 NM EAST-SOUTHEAST OF IWO TO, HAS TRACKED NORTH-NORTHEASTWARD AT 12 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 180600Z IS 981 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 180600Z IS 28 FEET. NEXT WARNINGS AT 181500Z, 182100Z, 190300Z AND 190900Z.// NNNN