ABPW10 PGTW 180100 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH PACIFIC OCEANS REISSUED/180100Z-180600ZAUG2024// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/171951ZAUG2024// AMPN/REF A IS A TROPICAL CYCLONE WARNING.// RMKS/ 1. :WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA) A. TROPICAL CYCLONE SUMMARY: (1) AT 17AUG24 1800Z, TYPHOON 08W (AMPIL) WAS LOCATED NEAR 38.6N 149.8E, APPROXIMATELY 412 NM EAST-SOUTHEAST OF MISAWA, JAPAN, AND HAD TRACKED EAST-NORTHEASTWARD AT 21 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 65 KNOTS GUSTING TO 80 KNOTS. SEE REF A (WTPN33 PGTW 172100) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 98W) PREVIOUSLY LOCATED NEAR 25.0N 122.4E IS NOW LOCATED NEAR 24.8N 126.0E, APPROXIMATELY 130 NM SOUTHWEST OF KADENA AIRBASE. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 172230Z REVEALS AN AREA OF BROAD CONVECTION WITH A WEAKLY-DEFINED CIRCULATION ALONG THE NORTH WESTERN PERIPHERY OF THE CONVECTION. ENVIRONMENTAL ANALYSIS IS MARGINALLY FAVORABLE, DUE TO LOW TO MODERATE VERTICAL WIND SHEAR (15-20KTS) GOOD UPPER LEVEL OUTFLOW, AND HIGH SST (29-31C). DETERMINISTIC AND ENSEMBLE MODELS INDICATE THAT THE AREA OF CONVECTION (98W) WILL TRANSIT NORTHEASTWARD AS IT STEADILY DEVELOPS OVER THE NEXT 24 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 13 TO 18 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO MEDIUM. (2) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 2. :SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: UPGRADED AREA AREA IN PARA 1.B.(1) TO MEDIUM.//// NNNN