ABPW10 PGTW 290600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/290600Z-300600ZSEP2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/290221ZSEP2023//
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 93W) PREVIOUSLY LOCATED NEAR 
15.8N 136.2E IS NOW LOCATED NEAR 15.7N 135.5E, APPROXIMATELY 848 NM EAST 
OF MANILA, PHILIPPINES. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 
290107Z ASCAT-C IMAGE DEPICT A WELL-DEFINED LOW-LEVEL CIRCULATION CENTER 
(LLCC) WITH CONSOLIDATING DEEP CONVECTION DISPLACED TO THE WEST OF THE 
LLCC AND CURVED BANDING WRAPPING INTO THE LLCC. ENVIRONMENTAL ANALYSIS 
INDICATES THAT 93W IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH 
GOOD OUTFLOW ALOFT, LOW (5-10 KTS) VERTICAL WIND SHEAR, AND WARM (30-31 
C) SST. GLOBAL NUMERICAL MODELS ARE IN AGREEMENT THAT 93W WILL TRACK 
WEST- NORTHWESTWARD AND CONTINUE TO DEEPEN OVER THE NEXT 48 HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 TO 23 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 HIGH. SEE REF A (WTPN21 PGTW 290230) 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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