WTPN31 PGTW 301500 MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TYPHOON 13W (NAMTHEUN) WARNING NR 023 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 301200Z6 --- NEAR 31.9N3 136.1E1 MOVEMENT PAST SIX HOURS - 270 DEGREES AT 06 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT 160 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 140 NM NORTHWEST QUADRANT REPEAT POSIT: 31.9N3 136.1E1 --- FORECASTS: 12 HRS, VALID AT: 310000Z4 --- 32.2N7 134.4E2 MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT RADIUS OF 050 KT WINDS - 045 NM RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 140 NM SOUTHEAST QUADRANT 140 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 290 DEG/ 08 KTS --- 24 HRS, VALID AT: 311200Z7 --- 32.7N2 132.5E1 MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT RADIUS OF 050 KT WINDS - 035 NM RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT OVER WATER 120 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT OVER WATER VECTOR TO 36 HR POSIT: 285 DEG/ 09 KTS --- 36 HRS, VALID AT: 010000Z1 --- 33.2N8 130.5E9 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 070 NM OVER WATER VECTOR TO 48 HR POSIT: 310 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 011200Z4 --- 34.1N8 129.3E5 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT RADIUS OF 034 KT WINDS - 050 NM VECTOR TO 72 HR POSIT: 340 DEG/ 08 KTS --- 72 HRS, VALID AT: 021200Z5 --- 37.0N0 127.8E8 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 96 HR POSIT: 020 DEG/ 11 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: 031200Z6 --- 41.1N6 129.6E8 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT BECOMING EXTRATROPICAL VECTOR TO 120 HR POSIT: 050 DEG/ 21 KTS --- 120 HRS, VALID AT: 041200Z7 --- 46.3N3 138.7E9 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT EXTRATROPICAL --- REMARKS: 301500Z9 POSITION NEAR 32.0N5 135.7E6. TYPHOON (TY) 13W (NAMTHEUN), LOCATED APPROXIMATELY 280 NM SOUTHWEST OF TOKYO, JAPAN, HAS TRACKED WESTWARD AT 06 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED ON 301130Z8 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 55, 65 AND 77 KNOTS AND A UW CIMS INTENSITY TREND ESTIMATE PRODUCT MEASUREMENT OF 975 MB WHICH CORRESPONDS TO 66 KNOTS. TY 13W IS NOW BRINGING STRONG WINDS TO COASTAL JAPAN. SHIONOMISAKI ON HONSHU ISLAND HAS BEEN REPORTING SUSTAINED WINDS OF 30 KNOTS FOR THE PAST 9 HOURS WHILE MUROTOMISAKI, ON THE ISLAND OF SHIKOKU RECENTLY REPORTED WINDS SUSTAINED AT 35 KNOTS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 301200Z6 IS 24 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 302100Z6, 310300Z7, 310900Z3 AND 311500Z0.// NNNN