ABPW10 PGTW 230600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS 230600Z-240600ZSEP2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/230351ZSEP2026//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 91W) PREVIOUSLY LOCATED
NEAR 14.3N 140.0E IS NOW LOCATED NEAR 15.1N 139.0E, APPROXIMATELY
349NM WEST-NORTHWEST OF GUAM. MULTISPECTRAL SATELLITE IMAGERY (MSI) 
DEPICTS CURVED, DEEP CONVECTIVE BANDING, WITH A CONSOLIDATING, ELONGATED 
LOW LEVEL CIRCULATION CENTER (LLCC). THE MID-LEVEL CIRCULATION AND MOST 
OF THE CONVECTION ARE DISPLACED TO THE NORTH OF THE SURFACE CENTER. THE 
SYSTEM HAS SLOWLY BECOME BETTER ORGANIZED AND IS ON THE CUSP OF BECOMING 
A TROPICAL DEPRESSION. ENVIRONMENTAL ANALYSIS INDICATES FAVORABLE 
CONDITIONS FOR DEVELOPMENT WITH LOW VERTICAL WIND SHEAR (10-15KTS), GOOD 
POLEWARD OUTFLOW, AND VERY WARM SEA SURFACE TEMPERATURES (29-30C). 
GLOBAL DETERMINISTIC AND ENSEMBLE MODELS AGREE ON TROPICAL CYCLONE 
FORMATION WITHIN 24 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED 
AT 18 TO 23 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 
1005 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL 
CYCLONE WITHIN THE NEXT 24 HOURS REMAINS HIGH. SEE REF A (WTPN21 PGTW 
230400) 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.
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