ABIO10 PGTW 111800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN /OCEAN/111800Z-121800ZSEP2021// RMKS/ 1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 95B) PREVIOUSLY LOCATED NEAR 16.0N 88.0E IS NOW LOCATED NEAR 19.5N 88.9E, APPROXIMATELY 184 NM SOUTH OF KOLKATA, INDIA. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY DEPICTS SCATTERED CONVECTION TO THE WEST OF A BROAD EXPOSED LOW LEVEL CIRCULATION. ENVIRONMENTAL ANALYSIS INDICATES A MARGINALLY FAVORABLE ENVIRONMENT DUE TO EASTERLY DIFFLUENT FLOW ASSOCIATED WITH A WEAK TROPICAL EASTERLY JET (TEJ), MODERATE VERTICAL WIND SHEAR (15-20 KT) AND WARM SEA SURFACE TEMPERATURES (29-30C). GLOBAL MODELS ARE IN AGREEMENT THAT INVEST 95B WILL TRACK NORTHWESTWARD WITH A SMALL WINDOW TO INTENSIFY DUE TO A WEAKENING TEJ IN THE NORTHERN BAY OF BENGAL. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 997 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