ABPW10 PGTW 291300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/291300Z-300600ZAUG2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/290751ZAUG2026//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/290752ZAUG2026//
NARR/REFS A AND B ARE TROPICAL CYCLONE WARNINGS.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 29AUG26 0600Z, TYPHOON 20W (BANG-LANG) WAS LOCATED NEAR 
23.9N 168.2E, APPROXIMATELY 290 NM NORTH-NORTHEAST OF WAKE ISLAND, AND 
HAD TRACKED NORTH-NORTHEASTWARD AT 16 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 75 KNOTS GUSTING TO 
90 KNOTS. SEE REF A (WTPN33 PGTW 290900) FOR FURTHER DETAILS.
      (2) AT 29AUG26 0600Z, TROPICAL STORM 21W (ETAU) WAS LOCATED NEAR 
28.2N 165.7E, APPROXIMATELY 536 NM NORTH OF WAKE ISLAND, AND HAD 
TRACKED NORTHWARD AT 18 KNOTS OVER THE PAST SIX HOURS. MAXIMUM 
SUSTAINED SURFACE WINDS WERE ESTIMATED AT 40 KNOTS GUSTING TO 50 
KNOTS. SEE REF B (WTPN32 PGTW 290900) FOR FURTHER DETAILS.
      (3) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) AN AREA OF CONVECTION (INVEST 94W) HAS PERSISTED NEAR 20.2N 
134.7E, APPROXIMATELY 706 NM NORTHWEST OF GUAM. ANIMATED ENHANCED 
INFRARED SATELLITE IMAGERY DEPICTS A POORLY DEFINED LOW-LEVEL 
CIRCULATION CENTER OBSCURED BY PERSISTENT CONVECTION. RECENT 
SCATTEROMETER DATA REVEALS AN ELONGATED CIRCULATION IN THE LOWER 
LEVELS ASSOCIATED WITH WEAK SURROUNDING WINDS. THE ENVIRONMENTAL 
ANALYSIS OF THE AREA INDICATES CONDUCIVE CONDITIONS FOR DEVELOPMENT 
WITH LOW (10-15 KTS) VERTICAL WIND SHEAR (VWS), WARM (29-30 C) SEA 
SURFACE TEMPERATURES, PLENTIFUL MOISTURE, AND A STRONG EQUATORWARD 
OUTFLOW IN THE UPPER LEVELS. GLOBAL DETERMINISTIC AND ENSEMBLE MODELS 
AGREE ON A GRADUAL DEVELOPMENT OF 94W AS THE SYSTEM TRANSITS WEST-
NORTHWESTWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 13 TO 
18 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB. 
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE 
WITHIN THE NEXT 24 HOURS IS MEDIUM. 
   C. SUBTROPICAL SYSTEM SUMMARY:
      (1) THE AREA OF CONVECTION (SD 01C) PREVIOUSLY LOCATED NEAR 
38.5N 178.8E IS NOW LOCATED NEAR 38.4N 176.4E, APPROXIMATELY 683 NM 
NORTH-NORTHWEST OF MIDWAY ATOLL. THE SYSTEM IS CURRENTLY CLASSIFIED AS 
A SUBTROPICAL CYCLONE, GENERALLY CHARACTERIZED AS HAVING BOTH TROPICAL 
AND MIDLATITUDE CYCLONE FEATURES. MULTISPECTRAL SATELLITE IMAGERY 
(MSI) DEPICTS A BROAD BUT DEFINED LOW-LEVEL CIRCULATION CENTER DEVOID 
OF CONVECTION. ENVIRONMENTAL ANALYSIS DEPICTS A HIGHLY UNFAVORABLE 
AREA FOR DEVELOPMENT WITH HIGH VWS (50 KTS), DRY SURROUNDING AIR, AND 
COOL SEA SURFACE TEMPERATURES (23-25 C). ENSEMBLE AND DETERMINISTIC 
MODELS ARE IN AGREEMENT FOR A GRADUAL DECAY OVER THE NEXT 48 HOURS. 
FOR HAZARDS AND WARNINGS, REFERENCE THE FLEET WEATHER CENTER SAN DIEGO 
HIGH WINDS AND SEAS PRODUCT OR REFER TO LOCAL WMO DESIGNATED FORECAST 
AUTHORITY. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 32 TO 38 
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003 MB. THE 
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN 
THE NEXT 24 HOURS REMAINS LOW.
      (2) NO OTHER SUBTROPICAL SYSTEMS.
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: ADDED MEDIUM AREA IN PARA. 1.B.(1).//
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