SUBJ: TROPICAL CYCLONE WARNING WTPN31 PGTW 111500 1. TROPICAL DEPRESSION 28W WARNING NR 020 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 111200Z5 --- NEAR 14.3N8 111.8E1 MOVEMENT PAST SIX HOURS - 035 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT REPEAT POSIT: 14.3N8 111.8E1 --- FORECASTS: 12 HRS, VALID AT: 120000Z3 --- 15.1N7 111.2E5 MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 275 DEG/ 07 KTS --- 24 HRS, VALID AT: 121200Z6 --- 15.2N8 109.8E8 MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 36 HR POSIT: 280 DEG/ 07 KTS --- 36 HRS, VALID AT: 130000Z4 --- 15.4N0 108.3E2 MAX SUSTAINED WINDS - 015 KT, GUSTS 025 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 111500Z8 POSITION NEAR 14.5N0 111.6E9. TROPICAL DEPRESSION (TD) 28W, LOCATED APPROXIMATELY 230 NM SOUTHEAST OF DA NANG, VIETNAM, HAS TRACKED NORTHEASTWARD AT 5 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED UPON 111130Z7 ANIMATED INFRARED SATELLITE IMAGERY AND IS CONSISTENT WITH AN 111010Z4 SPECIAL/SENSOR MICROWAVE IMAGE. THE WARNING INTENSITY IS BASED UPON SATELLITE CURRENT INTENSITY ESTIMATES OF 25 KNOTS. ANIMATED SATELLITE IMAGERY CONTINUES TO DEPICT TD 28W AS A FULLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) WITH NO ASSOCIATED DEEP CONVECTION. THE SYSTEM IS FORECAST TO TRACK NORTHWESTWARD WITHIN THE NEXT 6 HOURS AND THEN MORE WESTWARD THROUGH THE FORECAST PERIOD UNDER THE STEERING INFLUENCE OF THE MID-LEVEL RIDGE TO THE NORTH. TD 28W IS FORECAST TO CONTINUE WEAKENING BELOW 25 KNOTS BEFORE MAKING LANDFALL AND DISSIPATE OVER VIETNAM AFTER THE 36-HOUR FORECAST POSITION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 111200Z5 IS 10 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 112100Z5 (DTG 111951Z8), 120300Z6 (DTG 120151Z0), 120900Z2 (DTG 120751Z6) AND 121500Z9 (DTG 121351Z3).// BT #XXXX NNNN