ABIO10 PGTW 211900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN REISSUED/211900Z-221900ZFEB2023// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/211351ZFEB2023// 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 21FEB23 1200Z, TROPICAL CYCLONE 11S (FREDDY) WAS LOCATED NEAR 20.7S 49.6E, APPROXIMATELY 160 NM SOUTHEAST OF ANTANANARIVO, MADAGASCAR, AND HAD TRACKED WEST-SOUTHWESTWARD AT 16 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 100 KNOTS GUSTING TO 125 KNOTS. SEE REF A (WTXS31 PGTW 211500) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) AN AREA OF CONVECTION (INVEST 93S) HAS PERSISTED NEAR 13.1S 76.5E, APPROXIMATELY 456 NM NORTHWEST OF DIEGO GARCIA. AN ANIMATED ENHANCED INFRARED (EIR) SATELLITE AND A 211330Z SCATTEROMETER IMAGE REVEALS A BROAD ELONGATED CIRCULATION THAT IS HIDDEN BENEATH PERSISTENT DEEP CONVECTION WITH VERTICAL HOT TOWERS AND ASSOCIATED RAIN FLAGGED WINDS AT 30-35KT TO THE SOUTHWEST; BUT WITH WEAKER WINDS TO THE NORTHEAST. VERTICAL WIND SHEAR (VWS) IS FAVORABLE AT 10-15KT, DUAL CHANNEL OUTFLOW BOTH EQUATORWARD AND POLEWARD, WITH STRONG DIVERGENCE ALOFT, AND SEA SURFACE TEMPERATURES (SST) AT 28-29C. MODEL GUIDANCE GENERALLY INDICATES DEVELOPMENT WITHIN THE NEXT 48-72 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 21 TO 26 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 IS UPGRADED TO LOW. (2) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: ADDED AREA IN PARA 2.B.(1) AS A LOW.// NNNN