ABPW10 PGTW 280600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/280600Z-290600ZSEP2023//
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 
13.8N 144.2E IS NOW LOCATED NEAR 15.4N 141.5E, APPROXIMATELY 220 NM 
WEST-NORTHWEST OF ANDERSEN AFB, GUAM. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY AND A 280035Z ASCAT-B IMAGE DEPICT A BROAD, PARTIALLY EXPOSED 
LOW LEVEL CIRCULATION CENTER (LLCC) WITH DISORGANIZED FLARING 
CONVECTION. FORMATIVE BANDING IS OBSERVED WEST OF THE CIRCULATION CENTER 
WHERE THE BULK OF CONVECTION IS OCCURING. ENVIRONMENTAL ANALYSIS 
INDICATES THAT 93W IS IN A MARGINALLY FAVORABLE ENVIRONMENT FOR 
DEVELOPMENT WITH WEAK OUTFLOW ALOFT OFFSET BY LOW TO MODERATE (15-20 
KTS) VERTICAL WIND SHEAR AND WARM (30 C) SST. GLOBAL NUMERICAL MODELS 
AGREE THAT 93W WILL TRACK WESTWARD AND CONTINUE TO DEVELOP OVER THE NEXT 
48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10 TO 15 
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 REMAINS LOW.
      (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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