ABIO10 PGTW 171800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN
/OCEAN/171800Z-181800ZMAR2022//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/170751ZMAR2022//
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:
      (1) THE AREA OF CONVECTION (INVEST 91B) PREVIOUSLY LOCATED 
NEAR 5.1N 88.7E IS NOW LOCATED NEAR 5.6N 90.9E, APPROXIMATELY 462 NM 
WEST-SOUTHWEST OF PHUKET, THAILAND. ANIMATED ENHANCED INFRARED 
SATELLITE IMAGERY (EIR) AND A 171226Z SSMIS 91GHZ MICROWAVE PASS 
DEPICT DEEP AND DISORGANIZED CONVECTION WITH LITTLE TO NO SIGN OF A 
DISCERNIBLE LOW LEVEL CIRCULATION. THE SYSTEM LIES IN AN AREA THAT 
IS MODERATELY CONDUCIVE FOR DEVELOPMENT; WITH FAIR EQUATORWARD 
OUTFLOW, LOW-MODERATE (10-20KT) VWS OFFSET BY WARM (29-30C) SSTS. 
GLOBAL MODELS ARE IN GOOD AGREEMENT THAT INVEST 91B WILL HAVE SLOW 
DEVELOPMENT AS IT TRACKS NORTHWARD OVER THE NEXT 24-48 HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. 
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 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:
      (1) AT 17MAR22 0600Z, TROPICAL CYCLONE 20S (BILLY) WAS LOCATED 
NEAR 21.6S 93.2E, APPROXIMATELY 1163 NM WEST OF LEARMONTH, 
AUSTRALIA, AND HAD TRACKED SOUTH-SOUTHEASTWARD AT 15 KNOTS OVER THE 
PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 
KNOTS GUSTING TO 40 KNOTS. SEE REF A (WTXS31 PGTW 170900) FOR THE 
FINAL WARNING ON THIS SYSTEM.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.//
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