ABPW10 PGTW 210600
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH 
PACIFIC OCEANS/210600Z-220600ZDEC2023//
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 18W) PREVIOUSLY LOCATED NEAR 
7.6N 111.9E IS NOW LOCATED NEAR 7.6N 111.8E, APPROXIMATELY 251 NM 
NORTHWEST OF BRUNEI . ANIMATED MULTI-SPECTRAL SATELLITE IMAGERY SHOWS A 
PARTLY EXPOSED, ELONGATED LOW LEVEL CIRCULATION CENTER WELL SOUTH OF THE 
DEEP AREA OF CONVECTION THAT IS ALSO ENHANCED BY THE NORTHEASTERLY WIND 
SURGE IN THE SOUTH CHINA SEA. ANALYSIS REVEALS THE SYSTEM IS IN A 
MARGINALLY FAVORABLE ENVIRONMENT WITH MODERATE POLEWARD OUTFLOW, LIGHT 
(10-15KT) VERTICAL WIND SHEAR, AND WARM (28-29C) SEA SURFACE 
TEMPERATURES. GLOBAL MODELS PREDICT THAT INVEST 18W WILL MAINTAIN A 
GENERALLY SOUTHWESTWARD TRACK WITH SOME MODELS INDICATING POSSIBLE 
INTENSIFICATION OVER THE NEXT 72 HOURS. MAXIMUM SUSTAINED SURFACE WINDS 
ARE ESTIMATED AT 15 TO 20 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 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:
      (1) THE AREA OF CONVECTION (INVEST 94P) PREVIOUSLY LOCATED NEAR 
13.3S 138.9E HAS DISSIPATED AND IS NO LONGER SUSPECT FOR THE DEVELOPMENT 
OF A SIGNIFICANT TROPICAL CYCLONE IN THE NEXT 24 HOURS.
      (2) NO OTHER SUSPECT AREAS.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.//
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