ABIO10 PGTW 171800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN/171800Z- 181800ZAUG2024// 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 90S) PREVIOUSLY LOCATED NEAR 4.3S 74.5E IS NOW LOCATED NEAR 6.3S 70.2E, APPROXIMATELY 151 NM WEST- NORTHWEST OF DIEGO GARCIA. ENHANCED INFRARED SATELLITE IMAGERY AND 161329Z SSMIS 91GHZ SATELLITE IMAGERY DEPICTS AN AREA OF FLARING CONVECTION, WITH A PARTIALLY EXPOSED LOW LEVEL CIRCULATION WITH PERSISTENT CONVECTION. ENVIRONMENTAL ANALYSIS REVEALS AN AREA THAT IS MARGINAL FOR DEVELOPMENT WITH, WARM (28-29C) SEA SURFACE TEMPERATURES, HIGH (30-40 KTS) VERTICAL WIND SHEAR, AND WEAK EQUATORWARD OUTFLOW ALOFT. GLOBAL MODELS ARE IN AGREEMENT THAT INVEST 90S WILL CONTINUE TO GRADUALLY INTENSIFY AND GENERALLY TRACK SOUTHWESTWARD OVER THE NEXT 24- 48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 22 TO 28 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 DOWNGRADED TO LOW. (2) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN