ABIO10 PGTW 070930 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN /REISSUED/070930Z-071800ZDEC2020// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/070751ZDEC2020// REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/070521ZDEC2020// NARR/REF A IS A TROPICAL CYCLONE WARNING. REF B 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. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 2. SOUTH INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: (1) AT 07DEC20 0600Z, TROPICAL CYCLONE 02S (BONGOYO) WAS LOCATED NEAR 14.6S 81.9E, APPROXIMATELY 713 NM SOUTHEAST OF DIEGO GARCIA, AND HAD TRACKED WEST-SOUTHWESTWARD AT 11 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 KNOTS GUSTING TO 45 KNOTS. SEE REF A (WTXS31 PGTW 070900) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 96S) PREVIOUSLY LOCATED NEAR 10.6S 108.0E IS NOW LOCATED NEAR 10.5S 107.9E, APPROXIMATELY 271 NM SOUTH-SOUTHEAST OF JAKARTA, INDONESIA. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS DEEP CONVECTIVE BANDING WRAPPING TIGHTLY INTO A RAPIDLY CONSOLIDATING LOW LEVEL CIRCULATION. A 070620Z GMI 89GHZ MICROWAVE IMAGE DEPICTS A COMPACT (2-DEGREE DIAMETER) SYSTEM WITH A WEAK MICROWAVE EYE FEATURE. A 070233Z ASCAT-B IMAGE DEPICTS AN ASYMMETRIC CIRCULATION WITH 30-35KT WINDS OVER THE NORTHERN SEMICIRCLE. INVEST 96S IS IN A MARGINALLY FAVORABLE ENVIRONMENT WITH STRONG DIFFLUENCE ALOFT AND MODERATE TO HIGH (20-30KTS) VERTICAL WIND SHEAR OFFSET BY WARM (28-29C) SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT INVEST 96S WILL INTENSIFY AND CONTINUE TO TRACK SOUTHEASTWARD TOWARDS NORTHWEST AUSTRALIA. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 30 TO 35 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS HIGH. SEE REF B (WTXS22 PGTW 070530) FOR FURTHER DETAILS. (2) AN AREA OF CONVECTION (INVEST 99S) HAS PERSISTED NEAR 15.7S 119.2E, APPROXIMATELY 217 NM NORTH OF BROOME, AUSTRALIA. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND A 070532Z AMSR2 89GHZ SATELLITE IMAGE DEPICT FORMATIVE BANDING WRAPPING INTO A CONSOLIDATING LOW LEVEL CIRCULATION WITH FLARING CONVECTION IN THE NORTHERN SEMICIRCLE. A 070147Z ASCAT-C IMAGE REVEALS A BROAD CIRCULATION WITH AN EXTENSIVE AREA OF MOSTLY 15-20KT WINDS IN THE EASTERN SEMICIRCLE. INVEST 99S IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH LOW (<15KTS) VERTICAL WIND SHEAR, GOOD OUTFLOW ALOFT, AND WARM (29-30C) SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN FAIR AGREEMENT THAT INVEST 99S WILL CONTINUE TO TRACK SOUTHEASTWARD TOWARDS AUSTRALIA WITH SOME CONSOLIDATION BEFORE MAKING LANDFALL. 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 IS LOW. (3) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: UPDATED AREA IN PARA 2.A.(1) TO INCLUDE FIRST WARNING AND ADDED AREA IN PARA 2.B.(2) AS LOW.// NNNN