ABIO10 PGTW 310400
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN
/REISSUED/310400ZMAR2022-311800ZAPR2022//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/310151ZMAR2022//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
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:
      (1) AT 31MAR22 0000Z, TROPICAL CYCLONE 22S (HALIMA) WAS 
LOCATED NEAR 19.3S 83.3E, APPROXIMATELY 965 NM SOUTHEAST OF DIEGO 
GARCIA, AND HAD TRACKED EAST-NORTHEASTWARD AT 08 KNOTS OVER THE PAST 
SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 
KNOTS GUSTING TO 45 KNOTS. SEE REF A (WTXS32 PGTW 310300) FOR 
FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 96S) PREVIOUSLY LOCATED 
NEAR 16.8S 110.8E IS NOW LOCATED NEAR 18.7S 111.6E, APPROXIMATELY 
250 NM NORTHWEST OF LEARMONTH, AUSTRALIA. ANIMATED MULTISPECTRAL 
IMAGERY DEPICTS BROAD CONVECTION IN THE EASTERN PERIPHERY OF A LOW 
LEVEL CIRCULATION (LLC). A 310225Z METOP-B PASS REVEALS 25KT WINDS 
TO THE SOUTHEAST OF THE LLC. ENVIRONMENTAL ANALYSIS REVEALS 
FAVORABLE CONDITIONS FOR DEVELOPMENT DEFINED BY ROBUST POLEWARD 
OUTFLOW ALOFT, LOW (5-10KT) VERTICAL WIND SHEAR, AND WARM (29-30C) 
SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT 
INVEST 96S WILL TRACK SOUTHWARD ALONG THE WESTERN COAST OF AUSTRALIA 
AS IT INTENSIFIES OVER THE NEXT 24-48 HOURS.  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 UPGRADED TO MEDIUM.
      (2) NO OTHER SUSPECT AREAS.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
3. JUSTIFICATION FOR REISSUE: UPGRADED AREA IN PARA 2.B.(1) TO 
MEDIUM. //
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