WTPN31 PGTW 201500 1. TYPHOON 21W (VIPA) WARNING NR 015 03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 201200Z5 --- NEAR 34.9N6 143.7E5 MOVEMENT PAST SIX HOURS - 060 DEGREES AT 15 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 030 NM RADIUS OF 035 KT WINDS - 100 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT REPEAT POSIT: 34.9N6 143.7E5 --- FORECASTS: 12 HRS, VALID AT: 210000Z3 --- 36.8N7 147.2E4 MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 030 NM RADIUS OF 035 KT WINDS - 100 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 055 DEG/ 28 KTS --- 24 HRS, VALID AT: 211200Z6 --- 39.9N1 153.2E1 MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT EXTRATROPICAL VECTOR TO 36 HR POSIT: 040 DEG/ 40 KTS --- 36 HRS, VALID AT: 220000Z4 --- 45.5N4 160.8E5 MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT EXTRATROPICAL --- REMARKS: 201500Z8 POSITION NEAR 35.4N2 144.6E5. TYPHOON (TY) 21W (VIPA), LOCATED APPROXIMATELY 200 NM EAST OF TOKYO, HAS TRACKED EAST-NORTHEASTWARD AT 15 KNOTS DURING THE PAST SIX HOURS. THE WARNING POSITION IS BASED ON 201130Z7 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON CURRENT INTENSITY ESTIMATES OF 75 KNOTS. A 13 NM EYE (APPROX) HAS REAPPEARED IN INFRARED IMAGERY, INDICATING INTENSIFICATION AS THE SYSTEM VENTILATES INTO UPPER LEVEL WESTERLIES. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 201200Z5 IS 20 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 202100Z5, 210300Z6, 210900Z2 AND 211500Z9. REFER TO TROPICAL STORM 20W (NARI) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES. REFER TO TROPICAL STORM 22W (FRANCISCO) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY UPDATES.// BT #XXXX NNNN