ABIO10 PGTW 221800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN 
OCEAN/221800Z-231800ZDEC2024//
RMKS/
1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 91B) PREVIOUSLY LOCATED NEAR 
14.4N 85.1E IS NOW LOCATED NEAR 13.0N 84.4E, APPROXIMATELY 240 NM EAST 
OF CHENNAI. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY DEPICTS A 
FULLY-EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) WITH FLARING 
CONVECTION TO THE EAST OF THE SEMI-CIRCLE. ENVIRONMENTAL ANALYSIS 
REVEALS A MARGINAL ENVIRONMENT WITH HIGH VERTICAL WIND SHEAR OF 25-30 
KNOTS, GOOD POLEWARD OUTFLOW, AND WARM SEA SURFACE TEMPERATURES OF 28-
29 C. GLOBAL DETERMINISTIC AND ENSEMBLE MODELS ARE IN GOOD AGREEMENT 
THAT INVEST 91B WILL SLOWLY WEAKEN AND DEGRADE OVER THE NEXT 24-48 
HOURS AS IT MOVES WESTWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE 
ESTIMATED AT 23 TO 28 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 INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.//
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