WTPN31 PGTW 270900 MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL STORM 17W (KOPPU) WARNING NR 012 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 270600Z5 --- NEAR 22.2N6 139.6E9 MOVEMENT PAST SIX HOURS - 035 DEGREES AT 12 KTS POSITION ACCURATE TO WITHIN 045 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 170 NM NORTHEAST QUADRANT 170 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 130 NM NORTHWEST QUADRANT REPEAT POSIT: 22.2N6 139.6E9 --- FORECASTS: 12 HRS, VALID AT: 271800Z8 --- 24.4N0 140.7E2 MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT RADIUS OF 050 KT WINDS - 050 NM RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT 175 NM SOUTHEAST QUADRANT 150 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 030 DEG/ 11 KTS --- 24 HRS, VALID AT: 280600Z6 --- 26.2N0 141.9E5 MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT RADIUS OF 050 KT WINDS - 070 NM RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT 180 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 180 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 045 DEG/ 12 KTS --- 36 HRS, VALID AT: 281800Z9 --- 27.9N8 143.7E5 MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT RADIUS OF 050 KT WINDS - 080 NM RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT 180 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 180 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 045 DEG/ 13 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 290600Z7 --- 29.8N9 145.8E8 MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT RADIUS OF 050 KT WINDS - 080 NM RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT 180 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 180 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 050 DEG/ 17 KTS --- 72 HRS, VALID AT: 300600Z9 --- 33.8N4 152.0E8 MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 055 NM RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT 175 NM SOUTHEAST QUADRANT 150 NM SOUTHWEST QUADRANT 175 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 065 DEG/ 18 KTS --- LONG RANGE OUTLOOK: NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 250 NM ON DAY 4 AND 350 NM ON DAY 5... AND FOR INTENSITY NEAR 20 KT EACH DAY. --- 96 HRS, VALID AT: 010600Z7 --- 36.5N4 160.2E9 MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT BECOMING EXTRATROPICAL VECTOR TO 120 HR POSIT: 065 DEG/ 21 KTS --- 120 HRS, VALID AT: 020600Z8 --- 39.4N6 170.3E1 MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT EXTRATROPICAL --- REMARKS: 270900Z8 POSITION NEAR 22.7N1 139.9E2. TROPICAL STORM (TS) 17W (KOPPU), LOCATED APPROXIMATELY 180 NM SOUTH-SOUTHWEST OF IWO JIMA, HAS MOVED NORTHEAST AT 12 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED ON 270530Z7 MULTISPECTRAL SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 55 AND 65 KNOTS. TS 17W CONTINUES TO INTENSIFY TO NEAR TYPHOON STRENGTH WITH THE STRONGEST CONVECTION IN THE EASTERN SEMICIRCLE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 270600Z5 IS 17 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 271500Z5, 272100Z2, 280300Z3 AND 280900Z9.// NNNN