ABPW10 PGTW 212230
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/212230Z-220600ZAUG2025//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/211951ZAUG2025//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/212221ZAUG2025//
AMPN/REF A IS A TROPICAL CYCLONE WARNING AND REF B IS TROPICAL CYCLONE 
FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 21AUG25 1800Z, TROPICAL DEPRESSION 18W (LINGLING) WAS 
LOCATED NEAR 31.8N 131.4E, APPROXIMATELY 116 NM SOUTHEAST OF SASEBO, 
JAPAN, AND HAD TRACKED EAST-NORTHEASTWARD AT 05 KNOTS OVER THE PAST 
SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS 
GUSTING TO 40 KNOTS. SEE REF A (WTPN32 PGTW 212100) FOR FURTHER 
DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 90W) PREVIOUSLY LOCATED NEAR 
15.9N 126.8E IS NOW LOCATED NEAR 16.1N 123.3E, APPROXIMATELY 71 NM 
EAST OF CASIGURAN, PHILIPPINES. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY (MSI) AND A 212053Z GMI 89GHZ MICROWAVE IMAGE DEPICT A 
COMPACT, PARTIALLY EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH 
PERSISTENT CONVECTION ALONG THE EASTERN PERIPHERY OF THE CIRCULATION. 
ENVIRONMENTAL ANALYSIS REVEALS A FAVORABLE ENVIRONMENT FOR DEVELOPMENT 
WITH LOW (10-15 KNOTS) NORTHERLY VERTICAL WIND SHEAR, STRONG 
EQUATORWARD OUTFLOW, AND VERY WARM (30-31 C) SEA SURFACE TEMPERATURES. 
THE DEFINED CIRCULATION IS EXPECTED TO QUICKLY MAKE LANDFALL ALONG THE 
EASTERN COAST OF LUZON AND EMERGE WITHIN THE SOUTH CHINA SEA.  
DETERMINISTIC AND ENSEMBLE MODELS ARE IN AGREEMENT THAT THE SYSTEM 
WILL TRACK WESTWARD OVER LUZON AND INTENSIFY WITHIN THE SOUTH CHINA 
SEA AFTER RECOVERING FROM THE IMMINENT LANDFALL. MAXIMUM SUSTAINED 
SURFACE WINDS ARE ESTIMATED AT 20 TO 25 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 HIGH. SEE REF A (WTPN21 PGTW 212230) FOR FURTHER 
DETAILS.
      (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 IN PARA. 1.B.(1) TO HIGH//
NNNN