WTPN31 PGTW 171500 MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TYPHOON 02W (CHANCHU) WARNING NR 036 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 171200Z --- NEAR 22.5N 116.5E MOVEMENT PAST SIX HOURS - 020 DEGREES AT 13 KTS POSITION ACCURATE TO WITHIN 055 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT BECOMING EXTRATROPICAL RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT OVER WATER 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT OVER WATER RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT OVER WATER 050 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT OVER WATER RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT OVER WATER 140 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT OVER WATER 120 NM NORTHWEST QUADRANT OVER WATER REPEAT POSIT: 22.5N 116.5E --- FORECASTS: 12 HRS, VALID AT: 180000Z --- 24.8N 117.6E MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT BECOMING EXTRATROPICAL VECTOR TO 24 HR POSIT: 030 DEG/ 16 KTS --- 24 HRS, VALID AT: 181200Z --- 27.5N 119.5E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT EXTRATROPICAL VECTOR TO 36 HR POSIT: 040 DEG/ 18 KTS --- 36 HRS, VALID AT: 190000Z --- 30.1N 122.2E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT EXTRATROPICAL --- REMARKS: 171500Z POSITION NEAR 23.1N 116.8E. TYPHOON (TY) 02W (CHANCHU), LOCATED APPROXIMATELY 130 NM EAST OF HONG KONG, HAS TRACKED NORTH-NORTHEASTWARD AT 13 KNOTS OVER THE PAST 06 HOURS. ANIMATED SATELLITE IMAGERY AND A 171032Z SSM/I PASS INDICATE THAT TY 02W HAS BEGUN TO TRANSITION TO AN EXTRATROPICAL CYCLONE. MAXIMUM SIG- NIFICANT WAVE HEIGHT AT 171200Z IS 30 FEET. NEXT WARNINGS AT 172100Z, 180300Z, 180900Z AND 181500Z.// NNNN