ABPW10 PGTW 290300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS REISSUED/290300Z-290600ZSEP2023//
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 93) PREVIOUSLY LOCATED NEAR 
15.4N 141.5E IS NOW LOCATED NEAR 15.8N 136.2E, APPROXIMATELY 877 NM EAST 
OF MANILA, PHILIPPINES. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 
282147Z SSMIS 91GHZ SATELLITE IMAGE SHOW MID-LEVEL TURNING AND SHALLOW 
RAIN BANDS WRAPPING INTO A WELL-DEFINED, PARTLY EXPOSED LOW-LEVEL 
CIRCULATION CENTER. ENVIRONMENTAL ANALYSIS REVEALS THE INVEST IS IN A 
FAVORABLE ENVIRONMENT FOR DEVELOPMENT DEFINED BY ROBUST EQUATORWARD 
OUTFLOW, FAVORABLE (10-15 KT) VERTICAL WIND SHEAR, AND VERY WARM (30-31C) 
SEA SURFACE TEMPERATURES. THE INVEST IS ALSO IN AN AREA WITH A RELATIVELY 
PRONOUNCED 850 MB VORTICITY SIGNATURE. GLOBAL MODELS ARE IN GENERAL 
AGREEMENT THAT 93W WILL TRACK WEST TO WEST-NORTHWESTWARD AND INTENSIFY AS 
IT APPROACHES NORTHERN LUZON. 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 IS UPGRADED TO 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.
3. JUSTIFICATION FOR REISSUE: UPGRADED AREA IN PARA 1.B.(1) TO HIGH.//
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