ABIO10 PGTW 121800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN /112800Z-131800ZMAY2021// RMKS/ 1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) AN AREA OF CONVECTION (INVEST 92A) PREVIOUSLY LOCATED NEAR 8.3N 58.5E, NOW LOCATED NEAR 11.8N 66.8E APPROXIMATELY 560 NM SOUTHWEST OF MUMBAI, INDIA. ANIMATED ENHANCED INFRARED (EIR) SATELLITE IMAGERY DEPICTS A BROAD AREA OF DISORGANIZED, DEEP CONVECTION IN THE VICINITY OF AN ELONGATED AREA OF LOW LEVEL TURNING. THE ENVIRONMENT IS MARGINALLY FAVORABLE FOR DEVELOPMENT WITH MODERATE OUTFLOW ALOFT, VERY WARM (30-31C) SEA SURFACE TEMPERATURE AND MODERATE (15-20KT) VERTICAL WIND SHEAR. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT INVEST 92A WILL CONSOLIDATE AND INTENSIFY AS IT TRACKS EASTWARD OVER THE NEXT 24-48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 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 MEDIUM. (2) NO OTHER SUSPECT AREAS. 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: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE. NNNN