ABIO10 PGTW 051800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN
/OCEAN/051800Z-061800ZAPR2013//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/051251ZAPR2013//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.// 
RMKS/
1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
2. SOUTH INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 11.3S 
74.7E, IS NOW LOCATED NEAR 11.2S 73.7E, APPROXIMATELY 245 NM SOUTH-
SOUTHEAST OF DIEGO GARCIA. ANIMATED MULTISPECTRAL SATELLITE IMAGERY 
DEPICTS FORMATIVE CONVECTIVE BANDS HAVE FURTHER DEEPENED AND WRAPPED 
TIGHTER INTO A WELL-DEFINED, ALBEIT PARTIALLY EXPOSED, LOW LEVEL 
CIRCULATION CENTER (LLCC). A 050638Z SCATTEROMETRY PASS CLEARLY 
SHOWS A TIGHTER, MORE SYMMETRIC LLCC WITH 30-KNOT WIND BARBS FEEDING 
INTO IT FROM THE WESTERN AND SOUTHERN QUADRANTS. UPPER LEVEL 
ANALYSIS INDICATES THE VERTICAL WIND SHEAR HAS RELAXED AS THE 
CYCLONE IS NOW MOVING WESTWARD AND IS IN-PHASE WITH THE UPPER LEVEL 
WIND FLOW. ADDITIONALLY, WESTWARD AND EQUATORWARD OUTFLOW REMAIN 
ROBUST. THESE ARE EVIDENT ON RECENT ANIMATED WATER VAPOR IMAGERY. 
ALONG-TRACK SEA SURFACE TEMPERATURES REMAIN FAVORABLE (28 TO 29 
DEGREES CELSIUS) FOR FURTHER DEVELOPMENT. MAXIMUM SUSTAINED SURFACE 
WINDS ARE ESTIMATED AT 28 TO 33 KNOTS. MINIMUM SEA LEVEL PRESSURE IS 
ESTIMATED TO BE NEAR 1001 MB. SEE REF A (WTXS21 PGTW 051300) FOR 
FURTHER DETAILS. DUE TO THE IMPROVED UPPER-LEVEL CONDITIONS, THE 
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE 
WITHIN THE NEXT 24 HOURS REMAINS HIGH.
      (2) NO OTHER SUSPECT AREAS.//
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