WTPN31 PGTW 250900 1. TROPICAL DEPRESSION 11W WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 250600Z3 --- NEAR 24.0N6 125.4E2 MOVEMENT PAST SIX HOURS - 010 DEGREES AT 10 KTS POSITION ACCURATE TO WITHIN 045 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT REPEAT POSIT: 24.0N6 125.4E2 --- FORECASTS: 12 HRS, VALID AT: 251800Z6 --- 25.7N4 126.4E3 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT VECTOR TO 24 HR POSIT: 045 DEG/ 10 KTS --- 24 HRS, VALID AT: 260600Z4 --- 27.1N0 128.0E1 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 36 HR POSIT: 055 DEG/ 07 KTS --- 36 HRS, VALID AT: 261800Z7 --- 27.9N8 129.3E5 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT RADIUS OF 035 KT WINDS - 060 NM SOUTHEAST SEMICIRCLE 045 NM ELSEWHERE OVER WATER VECTOR TO 48 HR POSIT: 070 DEG/ 06 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 270600Z5 --- 28.3N3 130.6E0 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT RADIUS OF 035 KT WINDS - 060 NM SOUTHEAST SEMICIRCLE 045 NM ELSEWHERE OVER WATER VECTOR TO 72 HR POSIT: 035 DEG/ 08 KTS --- 72 HRS, VALID AT: 280600Z6 --- 31.0N4 132.7E3 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT --- REMARKS: 250900Z6 POSITION NEAR 24.4N0 125.7E5. TROPICAL DEPRESSION (TD) 11W, LOCATED APPROXIMATELY 180 NM SOUTHWEST OF OKINAWA, HAS TRACKED NORTHWARD AT 10 KNOTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 250530Z5 VISIBLE AND INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 30 KNOTS. ANIMATED VISIBLE AND INFRARED SATELLITE IMAGERY REVEALS A PARTIALLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) WITH THE DEEPER CONVECTION SHEARED TO THE EAST AND SOUTH. TD 11W IS FORECAST TO TRACK NORTHEASTWARD, INITIALLY, AND INCREASINGLY EASTWARD THROUGH THE 48 HOUR FORECAST PERIOD UNDER THE STEERING INFLUENCE OF THE SUBTROPICAL RIDGE TO THE EAST. AFTER 48 HOURS, THE SUBTROPICAL RIDGE WILL BEGIN TO BUILD IN TO THE WEST CAUSING A MORE NORTHWARD TRACK THROUGH 72 HOURS. THE SYSTEM IS FORECAST TO INTENSIFY SLIGHTLY THROUGH 36 TO 48 HOURS, THEN BEGIN WEAKENING AS IT TRACKS UNDER STRONG VERTICAL WIND SHEAR. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 250600Z3 IS 12 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 251500Z3 (DTG 251351Z7), 252100Z0 (DTG 251951Z3), 260300Z1 (DTG 260151Z5) AND 260900Z7 (DTG 260751Z1).// NNNN