ABIO10 PGTW 171000
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN
/REISSUED/171000Z-171800ZDEC2020//
RMKS/
1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   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:
      (1) AN AREA OF CONVECTION (INVEST 93S) HAS PERSISTED NEAR 7.4S 
86.0E, APPROXIMATELY 822 NM EAST OF DIEGO GARCIA. ANIMATED ENHANCED 
INFRARED SATELLITE IMAGERY AND A 170705Z 89GHZ AMSR2 IMAGE DEPICT A 
WEAK CIRCULATION WITH SOME SHEARED CONVECTION OVERHEAD. A 170914Z 
ASCAT-C IMAGE REVEALS 20-25 KNOT WINDS WRAPPING INTO THE CIRCULATION 
FROM THE NORTHERN EDGE. INVEST 93S IS CURRENTLY IN AN MARGINALLY 
FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH WARM (29-30C) SEA SURFACE 
TEMPERATURES, GOOD WESTWARD OUTFLOW ALOFT, AND HIGH (>25 KNOTS) 
VERTICAL WIND SHEAR. GLOBAL MODELS ARE IN GENERAL AGREEMENT SHOWING 
INVEST 93S TRACKING GENERALLY EASTWARD WITH LITTLE TO NO 
INTENSIFICATION. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 
TO 25 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.
3. JUSTIFICATION FOR REISSUE: ADDED AREA IN PARA 2.B.(1) AS LOW.//
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