WTPN31 PGTW 051500 1. TYPHOON 08W (CHATAAN) WARNING NR 031 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 051200Z8 --- NEAR 14.6N1 142.8E5 MOVEMENT PAST SIX HOURS - 295 DEGREES AT 09 KTS POSITION ACCURATE TO WITHIN 025 NM POSITION BASED ON EYE FIXED BY A COMBINATION OF SATELLITE AND RADAR PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT 120 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT REPEAT POSIT: 14.6N1 142.8E5 --- FORECASTS: 12 HRS, VALID AT: 060000Z6 --- 16.1N8 140.9E4 MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT RADIUS OF 050 KT WINDS - 060 NM RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT 120 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 305 DEG/ 14 KTS --- 24 HRS, VALID AT: 061200Z9 --- 17.7N5 138.6E8 MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT RADIUS OF 050 KT WINDS - 055 NM RADIUS OF 034 KT WINDS - 145 NM NORTHEAST QUADRANT 115 NM SOUTHEAST QUADRANT 115 NM SOUTHWEST QUADRANT 145 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 305 DEG/ 12 KTS --- 36 HRS, VALID AT: 070000Z7 --- 19.0N0 136.5E5 MAX SUSTAINED WINDS - 095 KT, GUSTS 115 KT RADIUS OF 050 KT WINDS - 045 NM RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 140 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 305 DEG/ 15 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 071200Z0 --- 20.7N9 133.8E5 MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT RADIUS OF 050 KT WINDS - 045 NM RADIUS OF 034 KT WINDS - 135 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 135 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 325 DEG/ 12 KTS --- 72 HRS, VALID AT: 081200Z1 --- 24.4N0 130.7E1 MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT RADIUS OF 050 KT WINDS - 040 NM RADIUS OF 034 KT WINDS - 135 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 135 NM NORTHWEST QUADRANT --- REMARKS: 051500Z1 POSITION NEAR 15.0N6 142.3E0. TYPHOON (TY) 08W (CHATAAN), LOCATED APPROXIMATELY 135 NM WEST- NORTHWEST OF GUAM, HAS TRACKED WEST-NORTHWESTWARD AT 09 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 051130Z0 ENHANCED INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 102 KNOTS. 051031Z0 SSM/I AND RADAR IMAGERY DEPICT A PARTIAL EYE WALL WITH AN INTENSE PRIMARY BANDING FEATURE EXTENDING OVER THE SOUTH SEMI-CIRCLE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 051200Z8 IS 22 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 052100Z8, 060300Z9, 060900Z5 AND 061500Z2. REFER TO TROPICAL STORM 09W (RAMMASUN) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.// NNNN