WTPN31 PGTW 010900 1. TROPICAL DEPRESSION 04W WARNING NR 007 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 010600Z7 --- NEAR 16.7N4 108.2E1 MOVEMENT PAST SIX HOURS - 315 DEGREES AT 08 KTS POSITION ACCURATE TO WITHIN 045 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 16.7N4 108.2E1 --- FORECASTS: 12 HRS, VALID AT: 011800Z0 --- 18.0N9 107.0E8 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 320 DEG/ 09 KTS --- 24 HRS, VALID AT: 020600Z8 --- 19.4N4 105.7E3 MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 010900Z0 POSITION NEAR 17.0N8 107.9E7. TROPICAL DEPRESSION (TD) 04W, LOCATED APPROXIMATELY 37 NM NORTH OF DA NANG, VIETNAM, HAS TRACKED NORTHWESTWARD AT 08 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 010530Z9 VISIBLE SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 25 KNOTS. ANIMATED VISIBLE SATELLITE IMAGERY AND A 010144Z0 SPECIAL SENSOR MICROWAVE IMAGER PASS DEPICT A FULLY-EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH ASSOCIATED CONVECTION DISPLACED ABOUT 15 NM SOUTHWEST OF THE LLCC. CONVERGENCE ALOFT ASSOCIATED WITH AN UPPER-LEVEL LOW POSITIONED NEAR LUZON AND LAND INTERACTION ALONG THE VIETNAM COAST HAS WEAKENED THE SYSTEM CONSIDERABLY. THE LOW/MID LEVEL HIGH, SITUATED OVER OKINAWA WITH ASSOCIATED RIDGE EXTENDING WEST-SOUTHWESTWARD OVER THE GULF OF TONKIN, IS EXPECTED TO WEAKEN AND SHIFT NORTH OVER THE TAIWAN STRAIT DURING THE NEXT 24 HOURS. THEREFORE, TD 04W SHOULD TRACK NORTHWESTWARD ALONG THE COAST THROUGH THE PERIOD. TD 04W IS FORECAST TO WEAKEN AND DISSIPATE BY THE END OF THE PERIOD. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 010600Z7 IS 12 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 011500Z7 (DTG 011351Z1), 012100Z4 (DTG 011951Z7) AND 020300Z5 (DTG 020151Z9).// BT #XXXX NNNN