WTPN31 PGTW 172100 2006137 2049 MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TYPHOON 02W (CHANCHU) WARNING NR 037 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 171800Z --- NEAR 23.4N 117.0E MOVEMENT PAST SIX HOURS - 020 DEGREES AT 10 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT BECOMING EXTRATROPICAL RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT OVER WATER 035 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 005 NM NORTHWEST QUADRANT OVER WATER RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT OVER WATER 050 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT OVER WATER 030 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 100 NM NORTHWEST QUADRANT OVER WATER REPEAT POSIT: 23.4N 117.0E --- FORECASTS: 12 HRS, VALID AT: 180600Z --- 26.3N 118.7E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT EXTRATROPICAL VECTOR TO 24 HR POSIT: 030 DEG/ 17 KTS --- 24 HRS, VALID AT: 181800Z --- 29.2N 120.8E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT EXTRATROPICAL --- REMARKS: 172100Z POSITION NEAR 24.1N 117.4E. TYPHOON (TY) 02W (CHANCHU), LOCATED APPROXIMATELY 170 NM EAST- NORTHEAST OF HONG KONG, HAS TRACKED NORTH-NORTHEASTWARD AT 10 KNOTS OVER THE PAST 06 HOURS. ANIMATED SATELLITE IMAGERY AND A 171432Z AMSU-B PASS INDICATE THAT TY 02W HAS STARTED TO MAKE LANDFALL AND CONTINUES TO TRANSITION TO AN EXTRATROPICAL CYCLONE. MAXIMUM SIGNIF- ICANT WAVE HEIGHT AT 171800Z IS 17 FEET. NEXT WARNINGS AT 180300Z, 180900Z AND 181500Z.// wxtlist.k: done