WTPN32 PGTW 251500 MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TYPHOON 12W (KROVANH) WARNING NR 038 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 251200Z0 --- NEAR 21.2N5 107.7E5 MOVEMENT PAST SIX HOURS - 290 DEGREES AT 12 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON EYE FIXED BY A COMBINATION OF SATELLITE AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT RADIUS OF 050 KT WINDS - 060 NM OVER WATER RADIUS OF 034 KT WINDS - 130 NM NORTHEAST QUADRANT OVER WATER 130 NM SOUTHEAST QUADRANT OVER WATER 130 NM SOUTHWEST QUADRANT OVER WATER 105 NM NORTHWEST QUADRANT OVER WATER REPEAT POSIT: 21.2N5 107.7E5 --- FORECASTS: 12 HRS, VALID AT: 260000Z8 --- 22.4N8 105.4E0 MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 320 DEG/ 12 KTS --- 24 HRS, VALID AT: 261200Z1 --- 24.3N9 103.7E1 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 251500Z3 POSITION NEAR 21.5N8 107.1E9. TYPHOON (TY) 12W (KROVANH), LOCATED OFF THE COAST OF NORTHERN VIETNAM OVER THE GULF OF TONKIN, HAS TRACKED WEST-NORTHWESTWARD AT 12 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED ON 251130Z2 INFRARED SATELLITE IMAGERY AND SYNOPTIC OBSERVATIONS. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 90 KNOTS. A RECENT AMSU IMAGE REVEALS A WELL-DEVELOPED EYE FEATURE WITH THE DEEPEST CONVECTION ON THE SOUTHERN AND EASTERN PERIPHERY. LAND INTERACTION HAS CONTINUED TO WEAKEN THE DEEP CONVECTION NORTH OF THE CENTER. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 251200Z0 IS 24 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 252100Z0, 260300Z1 AND 260900Z7.// NNNN