ABIO10 PGTW 251800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN/251800Z-
261800ZMAR2025//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/251351ZMAR2025//
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 25MAR25 1200Z, TROPICAL CYCLONE 27S (TWENTYSEVEN) WAS 
LOCATED NEAR 17.0S 108.2E, APPROXIMATELY 461 NM NORTHWEST OF LEARMONTH, 
AUSTRALIA, AND HAD TRACKED WEST-SOUTHWESTWARD AT 09 KNOTS OVER THE PAST 
SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 40 KNOTS 
GUSTING TO 50 KNOTS. SEE REF A (WTXS31 PGTW 251500) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 93S) PREVIOUSLY LOCATED NEAR 
16.7S 121.2E IS NOW LOCATED NEAR 15.9S 121.1E, APPROXIMATELY 139. NM 
NORTH-NORTHWEST OF BROOME, AUSTRALIA. ANIMATED MULTISPECTRAL SATELLITE 
IMAGERY DEPICT A POORLY ORGANIZED AREA OF FLARING CONVECTION OVER A VERY 
WEAKLY DEFINED LOW LEVEL CIRCULATION CENTER (LLCC). ENVIRONMENTAL 
ANALYSIS DEPICTS FAVORABLE CONDITIONS FOR FURTHER DEVELOPMENT DUE TO LOW 
TO MODERATE (15-20 KTS) VERTICAL WIND SHEAR, VERY WARM (30-31C) SEA 
SURFACE TEMPERATURES, AND A MODERATE EQUATORWARD OUTFLOW CHANNEL ALOFT. 
THE ECMWF ENSEMBLE IS CURRENTLY THE MOST AGGRESSIVE WITH GLOBAL 
DETERMINISTIC AND ENSEMBLE MODELS IN GOOD AGREEMENT ON A GENERALLY 
SOUTHWARD TRACK TOWARDS THE COAST OF AUSTRALIA OVER THE NEXT 24 HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM 
SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 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.//
3. JUSTIFICATION FOR REISSUE:
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