SUBJ: TROPICAL CYCLONE WARNING WTPN31 PGTW 241500 1. TYPHOON 29W (YAGI) WARNING NR 012 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 241200Z9 --- NEAR 23.7N2 126.2E1 MOVEMENT PAST SIX HOURS - 290 DEGREES AT 10 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT RADIUS OF 050 KT WINDS - 025 NM RADIUS OF 035 KT WINDS - 085 NM NORTH SEMICIRCLE 055 NM ELSEWHERE REPEAT POSIT: 23.7N2 126.2E1 --- FORECASTS: 12 HRS, VALID AT: 250000Z7 --- 23.9N4 124.3E0 MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT RADIUS OF 050 KT WINDS - 020 NM RADIUS OF 035 KT WINDS - 080 NM NORTH SEMICIRCLE 050 NM ELSEWHERE VECTOR TO 24 HR POSIT: 275 DEG/ 09 KTS --- 24 HRS, VALID AT: 251200Z0 --- 24.0N6 122.4E9 MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT RADIUS OF 050 KT WINDS - 020 NM RADIUS OF 035 KT WINDS - 065 NM NORTH SEMICIRCLE OVER WATER 035 NM ELSEWHERE OVER WATER VECTOR TO 36 HR POSIT: 270 DEG/ 05 KTS --- 36 HRS, VALID AT: 260000Z8 --- 24.0N6 121.2E6 MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 050 KT WINDS - 020 NM RADIUS OF 035 KT WINDS - 060 NM NORTH SEMICIRCLE OVER WATER 030 NM ELSEWHERE OVER WATER VECTOR TO 48 HR POSIT: 270 DEG/ 05 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 261200Z1 --- 24.0N6 120.0E3 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER RADIUS OF 035 KT WINDS - 045 NM NORTH SEMICIRCLE OVER WATER 025 NM ELSEWHERE OVER WATER VECTOR TO 72 HR POSIT: 270 DEG/ 06 KTS --- 72 HRS, VALID AT: 271200Z2 --- 23.9N4 117.5E4 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 035 KT WINDS - 045 NM NORTH SEMICIRCLE 025 NM ELSEWHERE --- REMARKS: 241500Z2 POSITION NEAR 23.7N2 125.7E5. TYPHOON 29W (YAGI) HAS INTENSIFIED TO 95 KNOTS DURING THE PAST 6 HOURS. TYPHOON (TY) 29W (YAGI) IS LOCATED APPROXIMATELY 165 NM SOUTHWEST OF NAHA, OKINAWA. THE SYSTEM HAS TRACKED WEST- NORTHWESTWARD AT 10 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 241130Z1 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 90 AND 102 KNOTS. A 240905Z0 SPECIAL SENSOR MICROWAVE IMAGER (SSM/I) PASS DEPICTED A FEEDER BAND ABOUT 87 NM SOUTHEAST OF THE LOW-LEVEL CIRCULATION CENTER. INCREASED DEEP CONVECTION (SURROUNDING EYEWALL REVEALED ON ENHANCED I/R), AND IMPROVED OUTFLOW ALOFT HAVE CONTRIBUTED TO AN INTENSITY INCREASE. IMAGERY ALSO REVEALS AN 8 NM CLOUD-FILLED EYE. OVER THE NEXT 12 HOURS, TY 29W IS FORECAST TO MOVE WITHIN A WEAKNESS IN THE RIDGE CREATED BY A MID-LATITUDE TROUGH CURRENTLY MOVING OVER CHINA. AFTERWARDS, A MID-LEVEL HIGH IS EXPECTED TO BUILD BEHIND THE TROUGH OVER THE COAST OF CHINA CAUSING TY 29W TO CONTINUE ON A GENERALLY, WESTWARD TRACK. FURTHER DEVELOPMENT IS POSSIBLE DURING THE NEXT 6 HOURS. THEN, UPPER SOUTHEASTERLIES ASSOCIATED WITH AN UPPER HIGH EAST OF THE SYSTEM WILL BEGIN TO WEAKEN TY 29W MAXIMUM SIGNIFICANT WAVE HEIGHT AT 241200Z9 IS 18 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 242100Z9 (DTG 241951Z2), 250300Z0 (DTG 250151Z4), 250900Z6 (DTG 250751Z0) AND 251500Z3 (DTG 251351Z7).// NNNN