SUBJ: TROPICAL CYCLONE WARNING WTPN32 PGTW 280900 1. TYPHOON 30W (XANGSANE) WARNING NR 012 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 280600Z6 --- NEAR 14.2N7 121.4E8 MOVEMENT PAST SIX HOURS - 280 DEGREES AT 11 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 050 KT WINDS - 045 NM RADIUS OF 035 KT WINDS - 115 NM NORTH SEMICIRCLE OVER WATER 100 NM ELSEWHERE OVER WATER REPEAT POSIT: 14.2N7 121.4E8 --- FORECASTS: 12 HRS, VALID AT: 281800Z9 --- 15.0N6 119.4E5 MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 050 KT WINDS - 045 NM RADIUS OF 035 KT WINDS - 115 NM NORTH SEMICIRCLE OVER WATER 100 NM ELSEWHERE OVER WATER VECTOR TO 24 HR POSIT: 290 DEG/ 11 KTS --- 24 HRS, VALID AT: 290600Z7 --- 15.7N3 117.3E2 MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT RADIUS OF 050 KT WINDS - 055 NM NORTH SEMICIRCLE 035 NM ELSEWHERE RADIUS OF 035 KT WINDS - 125 NM NORTH SEMICIRCLE 095 NM ELSEWHERE VECTOR TO 36 HR POSIT: 305 DEG/ 05 KTS --- 36 HRS, VALID AT: 291800Z0 --- 16.3N0 116.4E2 MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT RADIUS OF 050 KT WINDS - 065 NM NORTH SEMICIRCLE 045 NM ELSEWHERE RADIUS OF 035 KT WINDS - 135 NM NORTH SEMICIRCLE 105 NM ELSEWHERE VECTOR TO 48 HR POSIT: 330 DEG/ 05 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 300600Z9 --- 17.1N9 115.9E6 MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT RADIUS OF 050 KT WINDS - 070 NM NORTH SEMICIRCLE 050 NM ELSEWHERE RADIUS OF 035 KT WINDS - 140 NM NORTH SEMICIRCLE 110 NM ELSEWHERE VECTOR TO 72 HR POSIT: 340 DEG/ 05 KTS --- 72 HRS, VALID AT: 310600Z0 --- 19.1N1 115.1E8 MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT RADIUS OF 050 KT WINDS - 070 NM NORTHEAST SEMICIRCLE 050 NM ELSEWHERE RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE 110 NM ELSEWHERE --- REMARKS: 280900Z9 POSITION NEAR 14.4N9 120.9E2. TYPHOON (TY) 30W (XANGSANE) IS LOCATED APPROXIMATELY 38 NM SOUTHEAST OF MANILA AND HAS TRACKED WESTWARD AT 11 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED ON 280530Z8 VISIBLE SATELLITE IMAGERY AND SYNOPTIC DATA. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 65 AND 77 KNOTS. ALTHOUGH TY 30W IS CURRENTLY TRACKING OVER THE CENTRAL PHILIPPINE ISLANDS, DEEP CONVECTION OVER THE LOW-LEVEL CIRCULATION CENTER HAS PERSISTED. A SHIP APPROXIMATELY 75 NM TO THE NORTHWEST OF THE VORTEX REPORTED SUSTAINED WINDS FROM THE NORTH OF 45 KNOTS. HIGH HEIGHT CENTER SITUATED NEAR 24.0N6 133.7E4 AND ASSOCIATED RIDGE EXTENDING WESTWARD OVER HAINAN ISLAND IS EXPECTED TO WEAKEN LATER IN THE PERIOD WITH AN APPROACH OF A MAJOR SHORTWAVE TROUGH CURRENTLY OVER CENTRAL CHINA. TY 30W IS FORECAST TO TRACK WEST-NORTHWESTWARD DURING THE NEXT 36 HOURS. AFTERWARDS, TY 30W WILL SLOW ITS FORWARD MOVEMENT AND TRACK MORE NORTHWESTWARD INTO THE WEAKNESS CREATED BY THE APPROACHING MID-LATITUDE TROUGH. THE SYSTEM IS EXPECTED TO INTENSIFY AS IT MOVES BACK OVER THE SOUTH CHINA SEA. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 280600Z6 IS 16 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 281500Z6 (DTG 281352Z1), 282100Z3 (DTG 281952Z7), 290300Z4 (DTG 290152Z9) AND 290900Z0 (DTG 290752Z5). REFER TO TROPICAL DEPRESSION 29W (YAGI) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES.// NNNN