SUBJ: TROPICAL CYCLONE WARNING WTPN31 PGTW 071500 1. TROPICAL DEPRESSION 31W (BEBINCA) WARNING NR 031 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 071200Z0 --- NEAR 20.7N9 113.7E2 MOVEMENT PAST SIX HOURS - 275 DEGREES AT 10 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 DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 20.7N9 113.7E2 --- FORECASTS: 12 HRS, VALID AT: 080000Z8 --- 20.8N0 112.4E8 MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 265 DEG/ 06 KTS --- 24 HRS, VALID AT: 081200Z1 --- 20.7N9 111.1E4 MAX SUSTAINED WINDS - 015 KT, GUSTS 025 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 071500Z3 POSITION NEAR 20.7N9 113.4E9. TROPICAL DEPRESSION (TD) 31W (BEBINCA), NOW LOCATED APPROXIMATELY 100 NM SOUTH OF HONG KONG, HAS TRACKED WESTWARD AT 10 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 071130Z2 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES AND SYNOPTIC REPORTS OF 20 TO 30 KNOTS. ANIMATED INFRARED SATELLITE IMAGERY DEPICTS A SMALL BURST OF CONVECTION NORTHWEST OF THE FULLY EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC). A 071016Z5 QUIKSCAT SCATTEROMETER PASS INDICATES A CLEARLY-DEFINED LLCC WITH 20-25 KNOT WINDS OVER THE NORTHERN SEMI- CIRCLE. A LOW-LEVEL HIGH HEIGHT CENTER SITUATED NORTHWEST OF OKINAWA WITH ASSOCIATED RIDGE EXTENDING WESTWARD OVER THE CHINA COAST IS FORECAST TO STRENGTHEN THROUGH THE PERIOD. TD 31W SHOULD TRACK WESTWARD DURING THE FORECAST PERIOD. THE SYSTEM IS FORECAST TO DISSIPATE THROUGH THE FORECAST PERIOD IN AN INCREASINGLY STRONG VERTICAL WIND SHEAR ENVIRONMENT. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 071200Z0 IS 16 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 072100Z0 (DTG 071951Z3), 080300Z1 (DTG 080151Z5) AND 080900Z7 (DTG 080751Z1).// BT #XXXX NNNN