ABPW10 PGTW 230600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/230600Z-240600ZSEP2023//
RMKS/
1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) AN AREA OF CONVECTION (INVEST 91W) HAS PERSISTED NEAR 15.9N 
117.4E, APPROXIMATELY 425 NM SOUTH-SOUTHEAST OF HONG KONG. ANIMATED 
MULTISPECTRAL SATELLITE IMAGERY AND A 230220Z ASCAT-B IMAGE DEPICT A 
BROAD AND DISORGANIZED REGION OF CONVECTION WITH NO DEFINITIVE LOW LEVEL 
CIRCULATION CENTER (LLCC) OBSERVED ALONG A LOW-LEVEL CONVERGENT 
BOUNDARY. ENVIRONMENTAL ANALYSIS INDICATES THAT 91W IS IN A FAVORABLE 
ENVIRONMENT FOR DEVELOPMENT WITH GOOD EQUATORWARD OUTFLOW ALOFT, LOW (5-
10 KTS) VERTICAL WIND SHEAR, AND WARM (30-31 C) SST. GLOBAL NUMERICAL 
DETERMINISTIC AND ENSEMBLE MODELS ARE IN HIGH AGREEMENT THAT 91W WILL 
TRACK WESTWARD AND SLOWLY DEVELOP OVER THE NEXT 48 TO 96 HOURS. MAXIMUM 
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA 
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR THE 
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS 
IS 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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