WTPN31 PGTW 060900 1. TYPHOON 31W (BEBINCA) WARNING NR 026 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 060600Z2 --- NEAR 20.1N3 117.0E9 MOVEMENT PAST SIX HOURS - 360 DEGREES AT 04 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 050 KT WINDS - 025 NM RADIUS OF 035 KT WINDS - 080 NM NORTH SEMICIRCLE 065 NM ELSEWHERE REPEAT POSIT: 20.1N3 117.0E9 --- FORECASTS: 12 HRS, VALID AT: 061800Z5 --- 20.5N7 116.9E7 MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT RADIUS OF 050 KT WINDS - 020 NM RADIUS OF 035 KT WINDS - 075 NM NORTH SEMICIRCLE 060 NM ELSEWHERE VECTOR TO 24 HR POSIT: 335 DEG/ 02 KTS --- 24 HRS, VALID AT: 070600Z3 --- 20.9N1 116.7E5 MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER RADIUS OF 050 KT WINDS - 020 NM RADIUS OF 035 KT WINDS - 070 NM NORTH SEMICIRCLE 055 NM ELSEWHERE VECTOR TO 36 HR POSIT: 280 DEG/ 02 KTS --- 36 HRS, VALID AT: 071800Z6 --- 21.0N3 116.2E0 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER RADIUS OF 035 KT WINDS - 065 NM NORTH SEMICIRCLE 050 NM ELSEWHERE VECTOR TO 48 HR POSIT: 250 DEG/ 04 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 080600Z4 --- 20.7N9 115.3E0 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 72 HR POSIT: 265 DEG/ 05 KTS --- 72 HRS, VALID AT: 090600Z5 --- 20.5N7 113.2E7 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 060900Z5 POSITION NEAR 20.2N4 117.0E9. TYPHOON (TY) 31W (BEBINCA), NOW LOCATED APPROXIMATELY 205 NM SOUTHEAST OF HONG KONG, HAS TRACKED NORTHWARD AT 04 KNOTS OVER THE PAST SIX HOURS. THE WARNING POSITION IS BASED ON 060530Z4 VISIBLE AND INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 55 AND 65 KNOTS. ANIMATED SATELLITE IMAGERY INDICATES GOOD OUTFLOW OVER THE SYSTEM, WITH PULSATING CONVECTION OVER THE LOW LEVEL CIRCULATION CENTER. CONVECTION HAS CONTINUED TO BE ADVECTED TO THE NORTHEAST. UW-CIMSS SATELLITE DERIVED WIND PRODUCTS INDICATE WEAK TO MODERATE VERTICAL WIND SHEAR OVER THE SYSTEM, WITH VERTICAL WIND SHEAR INCREASING RAPIDLY TO THE NORTH. THE SYSTEM IS FORECAST TO DRIFT NORTHWARD OVER THE NEXT 12 TO 24 HOURS, THEN BEGIN TURNING WEST-SOUTHWESTWARD THROUGH THE REMAINDER OF THE PERIOD, UNDER THE STEERING INFLUENCE OF A LOW LEVEL RIDGE BUILDING IN SOUTHWARD, JUST TO THE NORTH OF THE SYSTEM. THE SYSTEM IS FORECAST TO WEAKEN THROUGH THE FORECAST PERIOD UNDER INCREASING VERTICAL WIND SHEAR. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 060600Z2 IS 18 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 061500Z2 (DTG 061352Z7), 062100Z9 (DTG 061952Z3), 070300Z0 (DTG 070152Z5) AND 070900Z6 (DTG 070752Z1).// NNNN