WTPN51 PGTW 070300 WARNING ATCG MIL 15W NWP 250807010302 2025080700 15W FIFTEEN 005 03 355 20 SATL 060 T000 330N 1566E 025 T012 364N 1569E 020 T024 404N 1578E 020 AMP 000HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER 012HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER 024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER SUBJ: TROPICAL DEPRESSION 15W (FIFTEEN) WARNING NR 005 1. TROPICAL DEPRESSION 15W (FIFTEEN) WARNING NR 005 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 070000Z --- NEAR 33.0N 156.6E MOVEMENT PAST SIX HOURS - 355 DEGREES AT 20 KTS POSITION ACCURATE TO WITHIN 060 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: 33.0N 156.6E --- FORECASTS: 12 HRS, VALID AT: 071200Z --- 36.4N 156.9E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 010 DEG/ 20 KTS --- 24 HRS, VALID AT: 080000Z --- 40.4N 157.8E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 070300Z POSITION NEAR 33.9N 156.7E. 07AUG25. TROPICAL DEPRESSION 15W (FIFTEEN), LOCATED APPROXIMATELY 849 NM EAST OF YOKOSUKA, JAPAN, HAS TRACKED NORTHWARD AT 20 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) DEPICTS 15W WITH A HIGHLY ELONGATED AND FULLY EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC). A 062256Z METOP-C ASCAT IMAGE REVEALED THAT THE WESTERN PORTION OF THE LLCC HAS BECOME VERY WEAK AND OPENED UP. THE SYSTEM IS FORECAST TO CONTINUE TRACKING NORTHWARD, ALONG THE WESTERN PERIPHERY OF A SUBTROPICAL RIDGE POSITIONED TO THE EAST THROUGHOUT THE FORECAST PERIOD. ENVIRONMENTAL ANALYSIS INDICATES THAT 15W IS IN AN UNFAVORABLE ENVIRONMENT CHARACTERIZED BY WEAK OUTFLOW ALOFT, MODERATE (20 KTS) VERTICAL WIND SHEAR, AND SIGNIFICANT DRY AIR ENTRAINMENT. 15W IS FORECAST TO FULLY DISSIAPTE WITHIN THE NEXT 12 HOURS AS THE CIRCULATION BECOMES EVEN MORE STRETCHED OUT. 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 070000Z IS 1005 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 070000Z IS 12 FEET. REFER TO TROPICAL DEPRESSION 16W (SIXTEEN) WARNINGS 1525080400 245N1628E 15 1525080406 243N1624E 15 1525080412 240N1620E 15 1525080418 251N1618E 15 1525080500 256N1605E 20 1525080506 262N1598E 20 1525080512 264N1585E 25 1525080518 280N1583E 25 1525080600 281N1577E 25 1525080606 288N1573E 25 1525080612 297N1570E 25 1525080618 310N1568E 25 1525080700 330N1566E 25 NNNN