WTPN31 PGTW 190900 2004232 0834 MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL STORM 18W (MEGI) WARNING NR 022 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 190600Z6 --- NEAR 37.6N6 132.3E9 MOVEMENT PAST SIX HOURS - 050 DEGREES AT 31 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 125 NM NORTHEAST QUADRANT 105 NM SOUTHEAST QUADRANT 125 NM SOUTHWEST QUADRANT 105 NM NORTHWEST QUADRANT REPEAT POSIT: 37.6N6 132.3E9 --- FORECASTS: 12 HRS, VALID AT: 191800Z9 --- 40.6N0 138.0E2 MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT EXTRATROPICAL VECTOR TO 24 HR POSIT: 070 DEG/ 27 KTS --- 24 HRS, VALID AT: 200600Z8 --- 42.4N0 144.7E6 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT EXTRATROPICAL VECTOR TO 36 HR POSIT: 070 DEG/ 27 KTS --- 36 HRS, VALID AT: 201800Z1 --- 43.8N5 151.8E5 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT EXTRATROPICAL --- REMARKS: 190900Z9 POSITION NEAR 38.4N5 133.7E4. TROPICAL STORM (TS) 18W (MEGI), LOCATED APPROXIMATELY 440 NM WEST-SOUTHWEST OF MISAWA, JAPAN, HAS TRACKED NORTHEASTWARD AT 31 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED ON 190530Z8 MULTISPECTRAL SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 55 AND 65 KNOTS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 190600Z6 IS 22 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 191500Z6, 192100Z3, 200300Z5 AND 200900Z1. REFER TO TROPICAL DEPRESSION 19W WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.// wxtlist.k: done