ABIO10 PGTW 020800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN /REISSUED/020800Z-021800ZFEB2022// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/020151ZFEB2022// 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 02FEB22 0000Z, TROPICAL CYCLONE 08S (BATSIRAI) WAS LOCATED NEAR 18.1S 58.3E, APPROXIMATELY 133 NM NORTH-NORTHEAST OF PORT LOUIS, MAURITIUS, AND HAD TRACKED SOUTHWESTWARD AT 10 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 120 KNOTS GUSTING TO 145 KNOTS. SEE REF A (WTXS31 PGTW 020300) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) AN AREA OF CONVECTION (INVEST 90S) HAS PERSISTED NEAR 18.6S 80.4E, APPROXIMATELY 816NM SOUTHEAST OF DIEGO GARCIA. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 020343Z MHS 89GHZ IMAGE SHOW A BROAD LOW LEVEL CIRCULATION (LLC) WITH PERSISTENT DEEP CONVECTION IN THE NORTHERN AND EASTERN SECTORS. A PARTIAL 020346Z ASCAT-B PASS REVEALS 20-25KT WINDS IN THE SOUTHERN PERIPHERY. ENVIRONMENTAL ANALYSIS INDICATES THAT THE INVEST IS IN A GENERALLY FAVORABLE AREA OF DEVELOPMENT DEFINED BY LOW (5-10KTS) VERTICAL WIND SHEAR, WARM (28-29C) SEA SURFACE TEMPERATURES, AND FAIR EQUATORWARD OUTFLOW. GLOBAL MODELS ARE IN AGREEMENT THAT INVEST 90S WILL SLOWLY DRIFT EQUATORWARD OVER THE NEXT 24-48 HOURS WITH GRADUAL INTENSIFICATION. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1002 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS MEDIUM. (2) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: ADDED MEDIUM AREA IN PARA. 2.B.(1).// NNNN