WTPN51 PGTW 051500 WARNING ATCG MIL 21W NWP 250905135615 2025090512 21W PEIPAH 009 01 075 30 SATL 060 T000 356N 1429E 050 R050 000 NE QD 060 SE QD 070 SW QD 000 NW QD R034 070 NE QD 150 SE QD 130 SW QD 060 NW QD T012 362N 1499E 055 R050 030 NE QD 060 SE QD 070 SW QD 030 NW QD R034 150 NE QD 170 SE QD 180 SW QD 120 NW QD T024 364N 1559E 055 R050 020 NE QD 060 SE QD 070 SW QD 020 NW QD R034 170 NE QD 190 SE QD 180 SW QD 150 NW QD AMP 000HR BECOMING EXTRATROPICAL 012HR EXTRATROPICAL 024HR EXTRATROPICAL SUBJ: TROPICAL STORM 21W (PEIPAH) WARNING NR 009 1. TROPICAL STORM 21W (PEIPAH) WARNING NR 009 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 051200Z --- NEAR 35.6N 142.9E MOVEMENT PAST SIX HOURS - 075 DEGREES AT 30 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 000 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 000 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT 150 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT REPEAT POSIT: 35.6N 142.9E --- FORECASTS: 12 HRS, VALID AT: 060000Z --- 36.2N 149.9E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT 170 NM SOUTHEAST QUADRANT 180 NM SOUTHWEST QUADRANT 120 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 085 DEG/ 24 KTS --- 24 HRS, VALID AT: 061200Z --- 36.4N 155.9E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 060 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 170 NM NORTHEAST QUADRANT 190 NM SOUTHEAST QUADRANT 180 NM SOUTHWEST QUADRANT 150 NM NORTHWEST QUADRANT --- REMARKS: 051500Z POSITION NEAR 35.8N 144.7E. 05SEP25. TROPICAL STORM 21W (PEIPAH), LOCATED APPROXIMATELY 157 NM EAST OF YOKOSUKA, JAPAN, HAS TRACKED EAST-NORTHEASTWARD AT 30 KNOTS OVER THE PAST SIX HOURS. 21W IS CURRENTLY TRANSITIONING INTO A STORM-FORCE EXTRATROPICAL CYCLONE WITH A DEVELOPING FRONTAL FEATURE EXTENDING SOUTHWARD FROM THE SYSTEM. A MAJOR SHORTWAVE TROUGH IS CURRENTLY DIRECTLY TO THE NORTH OF THE SYSTEM, IMPARTING INCREASED VERTICAL WIND SHEAR AND THERMAL ADVECTION. A 051155Z METOP-C ASCAT IMAGE REVEALED A HIGHLY ELONGATED CIRCULATION WITH A SWATH OF 45 KTS CONFINED TO THE SOUTEHRN PERIPHERY. 21W IS FORECAST TO TRACK GENERALLY EASTWARD OVER THE NEXT 24 HOURS WITH EXTRATROPICAL TRANSITION EXPECTED TO COMPLETE WITHIN THE NEXT 12 HOURS. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. MINIMUM CENTRAL PRESSURE AT 051200Z IS 990 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 051200Z IS 24 FEET.// 2125083100 127N1321E 15 2125083106 134N1320E 15 2125083112 143N1318E 15 2125083118 152N1312E 15 2125090100 161N1307E 15 2125090106 169N1307E 15 2125090112 178N1310E 15 2125090118 185N1313E 15 2125090200 197N1316E 15 2125090206 206N1317E 20 2125090212 213N1320E 20 2125090218 227N1324E 20 2125090300 242N1325E 20 2125090306 256N1320E 25 2125090312 270N1315E 30 2125090318 281N1311E 30 2125090400 296N1310E 30 2125090406 310N1315E 35 2125090412 323N1320E 35 2125090418 333N1332E 35 2125090500 340N1358E 40 2125090506 349N1393E 45 2125090512 356N1429E 50 2125090512 356N1429E 50 NNNN