WTPN31 PGTW 311500 1. TROPICAL STORM 21W (RUSA) WARNING NR 037 DOWNGRADED FROM TYPHOON 21W 03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 311200Z7 --- NEAR 35.3N1 127.6E6 MOVEMENT PAST SIX HOURS - 360 DEGREES AT 10 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT 170 NM SOUTHEAST QUADRANT 170 NM SOUTHWEST QUADRANT 190 NM NORTHWEST QUADRANT REPEAT POSIT: 35.3N1 127.6E6 --- FORECASTS: 12 HRS, VALID AT: 010000Z1 --- 37.2N2 128.1E2 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT 160 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 175 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 020 DEG/ 09 KTS --- 24 HRS, VALID AT: 011200Z4 --- 38.8N9 128.9E0 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT EXTRATROPICAL VECTOR TO 36 HR POSIT: 045 DEG/ 12 KTS --- 36 HRS, VALID AT: 020000Z2 --- 40.6N0 131.1E6 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT EXTRATROPICAL VECTOR TO 48 HR POSIT: 035 DEG/ 40 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 021200Z5 --- 46.9N9 137.9E0 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT EXTRATROPICAL --- REMARKS: 311500Z0 POSITION NEAR 35.8N6 127.7E7. TROPICAL STORM (TS) 21W (RUSA), MADE LANDFALL AT (APPROX) 310630Z3 NEAR THE CITY OF GOHEUNG. MAXIMUM SUSTAINED WINDS WERE ESTIMATED AT 65 KNOTS WITH GUSTS TO 80 KNOTS. TS 21W IS NOW LOCATED APPROXIMATELY 55 NM SOUTHEAST OF KUNSAN, HAS TRACKED NORTHWARD AT 10 KNOTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 301130Z8 SYNOPTIC OBSERVATIONS AND ENHANCED INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 55 AND 65 KNOTS AND SYNOPTIC DATA. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 311200Z7 IS 14 FEET. REFER TO WWPN31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 312100Z7, 010300Z4, 010900Z0 AND 011500Z7. REFER TO TYPHOON 02C (ELE) WARNINGS (WTPN34 PGTW) FOR SIX- HOURLY UPDATES. REFER TO TYPHOON 22W (SINLAKU) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.// NNNN