WTPN53 PGTW 281500 WARNING ATCG MIL 11W NWP 210728132350 2021072812 11W NEPARTAK 021 02 300 15 SATL 040 T000 409N 1385E 025 T012 414N 1366E 020 T024 413N 1354E 020 AMP 000HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER 012HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER 024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER SUBJ: TROPICAL DEPRESSION 11W (NEPARTAK) WARNING NR 021 1. TROPICAL DEPRESSION 11W (NEPARTAK) WARNING NR 021 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 281200Z --- NEAR 40.9N 138.5E MOVEMENT PAST SIX HOURS - 300 DEGREES AT 15 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 40.9N 138.5E --- FORECASTS: 12 HRS, VALID AT: 290000Z --- 41.4N 136.6E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 265 DEG/ 05 KTS --- 24 HRS, VALID AT: 291200Z --- 41.3N 135.4E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 281500Z POSITION NEAR 41.0N 138.0E. 28JUL21. TROPICAL DEPRESSION 11W (NEPARTAK), LOCATED APPROXIMATELY 127 NM WEST-NORTHWEST OF MISAWA, JAPAN, HAS TRACKED WEST-NORTHWESTWARD AT 15 KNOTS OVER THE PAST SIX HOURS. 11W REMAINS ASSESSED AS A SUBTROPICAL DEPRESSION. 11W HAS REEMERGED OVER WATER AFTER QUICKLY TRAVERSING ACROSS NORTHERN HONSHU. HOWEVER THE OVERALL CIRCULATION WAS SIGNIFICANTLY DEGRADED DUE TO TERRAIN INTERACTION. THE INITIAL POSITION IS ASSESSED WITH HIGH CONFIDENCE BASED ON THE EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) IN ANIMATED ENHANCED INFRARED IMAGERY. THE INITIAL INTENSITY IS ASSESSED WITH HIGH CONFIDENCE BASED ON A SERIES OF SCATTEROMETER PASSES NEAR THE 280900Z HOUR, WHICH CONFIRMED A SMALL AREA OF 25 KNOT WINDS CONFINED TO THE NORTHERN HEMISPHERE OF THE CIRCULATION. OVER THE NEXT 24 HOURS, THE DEVELOPMENT OF UPPER-LEVEL CONVERGENT FLOW, INCREASING NORTHERLY VWS AND ENTRAINMENT OF MID-LEVEL DRY AIR, WILL SERVE TO DISSIPATE 11W OVER THE NORTHERN SEA OF JAPAN. 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. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 281200Z IS 10 FEET.// 1121072212 215N1460E 20 1121072218 217N1471E 20 1121072300 223N1479E 20 1121072306 233N1483E 25 1121072312 239N1486E 30 1121072318 247N1494E 35 1121072400 252N1497E 35 1121072406 262N1500E 35 1121072412 273N1503E 35 1121072418 290N1502E 35 1121072500 301N1504E 35 1121072506 312N1505E 35 1121072512 318N1505E 35 1121072518 329N1503E 35 1121072600 342N1488E 35 1121072606 346N1468E 35 1121072612 350N1448E 40 1121072618 345N1428E 40 1121072700 349N1425E 45 1121072706 358N1423E 45 1121072712 364N1421E 35 1121072718 376N1420E 35 1121072800 391N1416E 30 1121072806 402N1403E 30 1121072812 409N1385E 25 NNNN