ABIO10 PGTW 070630 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN /REISSUED/070630Z-071800ZDEC2020// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/070321ZDEC2020// REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/070521ZDEC2020// NARR/REFS A AND B ARE TROPICAL CYCLONE FORMATION ALERTS.// 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: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 95S) PREVIOUSLY LOCATED NEAR 13.1S 85.5E IS NOW LOCATED NEAR 13.8S 82.8E, APPROXIMATELY 716 NM SOUTHEAST OF DIEGO GARCIA. ANIMATED ENHANCED INFRARED (EIR) SATELLITE IMAGERY AND A 070049Z SSMIS F-17 91GHZ MICROWAVE IMAGE DEPICT A WELL-DEFINED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH DEEP FORMATIVE CONVECTIVE BANDS WRAPPING INTO THE CENTER TO THE WEST AND SOUTH. INVEST 95S IS MOVING INTO AN IMPROVED ENVIRONMENT WITH GOOD POLEWARD OUTFLOW AND WARM (28 TO 29 CELSIUS) SEA SURFACE TEMPERATURES AND MODERATE (15-20 KNOT) VERTICAL WIND SHEAR. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT INVEST 95S WILL TRACK SOUTHWESTWARD WITH WINDS IN THE SOUTHERN SEMICIRCLE INTENSIFYING TO WARNING THRESHOLD WITHIN 12 TO 24 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS HIGH. SEE REF A (WTXS21 PGTW 070330) FOR FURTHER DETAILS. (2) THE AREA OF CONVECTION (INVEST 96S) PREVIOUSLY LOCATED NEAR 9.4S 107.4E IS NOW LOCATED NEAR 10.6S 108.0E, APPROXIMATELY 279 NM SOUTH-SOUTHEAST OF JAKARTA, INDONESIA. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS DEEP CONVECTIVE BANDING WRAPPING TIGHTLY INTO A RAPIDLY CONSOLIDATING LOW LEVEL CIRCULATION. A 070231Z METOP- B 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 IS UPGRADED TO HIGH. SEE REF B (WTXS22 PGTW 070530) FOR FURTHER DETAILS. (3) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: UPDATED INFORMATION IN PARA 2.B.(1) AND UPGRADED AREA IN PARA 2.B.(2) TO HIGH.// NNNN