ABPW10 PGTW 300730
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/300730Z-310600ZAUG2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/300751ZAUG2026//
REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/300752ZAUG2026//
REF/C/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/300721ZAUG2026//
NARR/REFS A AND B ARE TROPICAL CYCLONE WARNINGS. REF C IS A TROPICAL 
CYCLONE FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 30AUG26 0600Z, TROPICAL STORM 20W (BANG-LANG) WAS LOCATED 
NEAR 33.3N 167.3E, APPROXIMATELY 841 NM NORTH OF WAKE ISLAND, AND HAD 
TRACKED NORTHWARD AT 26 KNOTS OVER THE PAST SIX HOURS. MAXIMUM 
SUSTAINED SURFACE WINDS WERE ESTIMATED AT 45 KNOTS GUSTING TO 55 
KNOTS. SEE REF A (WTPN33 PGTW 300900) FOR FURTHER DETAILS.
      (2) AT 30AUG26 0600Z, TROPICAL DEPRESSION 21W (ETAU) WAS LOCATED 
NEAR 30.8N 165.3E, APPROXIMATELY 694 NM NORTH OF WAKE ISLAND, AND HAD 
TRACKED EASTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. MAXIMUM 
SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS GUSTING TO 40 
KNOTS. SEE REF B (WTPN32 PGTW 300900) FOR FURTHER DETAILS.
      (3) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 94W) PREVIOUSLY LOCATED NEAR 
20.3N 133.7E IS NOW LOCATED NEAR 20.6N 133.3E, APPROXIMATELY 785 NM 
NORTHWEST OF GUAM. THE SYSTEM IS CURRENTLY CLASSIFIED AS A MONSOON 
DEPRESSION, GENERALLY CHARACTERIZED AS A LARGE CYCLONIC CIRCULATION, 
GREATER THAN 600NM DIAMETER, WITH ELEVATED WINDS OVER THE SOUTHEASTERN 
PERIPHERY AND A WEAK CORE OF LIGHT WINDS. ANIMATED ENHANCED INFRARED 
SATELLITE IMAGERY DEPICTS A BROAD LOW-LEVEL CIRCULATION CENTER 
OBSCURED BY PERSISTENT CONVECTION ALONG THE WESTERN AND SOUTHERN 
EXTENT OF THE SYSTEM. A 292347Z METOP-B BULLSEYE ASCAT REVEALED WEAK 
WINDS NEAR THE CENTER OF 94W, SURROUNDED BY ELEVATED WINDS UP TO 25 
KTS. 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. ONLY A SLIGHT 
TIGHTENING OF THE WIND FIELD IS NEEDED TO DESIGNATE THE SYSTEM AS A 
TROPICAL DEPRESSION. THE MAJORITY OF GLOBAL AND ENSEMBLE MEMBERS 
INDICATE THAT 94W WILL HAVE A SHORT WINDOW TO CONSOLIDATE, AFTER WHICH 
TIME, THE CLOSED CIRCULATION WILL OPEN UP. 94W CURRENTLY LIES ALONG A 
TROUGH THAT EXTENDS FROM TAIWAN TO THE MARIANA ISLANDS. OVER THE NEXT 
FEW DAYS, DEVELOPMENT OF ADDITIONAL, NORTHWEST-TRACKING CIRCULATIONS 
ALONG THIS TROUGH WILL BE POSSIBLE. THAT MAY LEAD TO MORE DIRECT 
IMPACTS TO THE RYUKYU ISLANDS. WHILE THIS SCENARIO IS SUPPORTED BY 
ENSEMBLE SYSTEMS, THE SPECIFIC IMPACTS WILL BE PREDICATED ON THE 
EVOLUTION OF THESE SUBSEQUENT CIRCULATIONS, WHICH HAVE NOT YET FORMED. 
THEREFORE, SIGNIFICANT UNCERTAINTY EXISTS FOR TROPICAL CYCLONE 
POTENTIAL OVER THE NEXT FEW DAYS AS IT RELATES TO THE REGION OF THE 
EAST CHINA SEA. 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 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED 
TO BE NEAR 1002 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT 
TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO HIGH. SEE REF 
C (WTPN21 PGTW 300730) 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.//
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