ABIO10 PGTW 041800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN 041800Z-051800ZOCT2022// 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 92S) PREVIOUSLY LOCATED NEAR 8.8S 88.8E IS NOW LOCATED NEAR 9.1S 88.2E, APPROXIMATELY 939NM EAST OF DIEGO GARCIA. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY INDICATES LOW- LEVEL CLOUD LINES WRAPPING INTO A DEFINED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH FLARING DEEP CONVECTION OVER THE SOUTHERN SEMICIRCLE. A 040750Z AMSR2 89GHZ COLOR COMPOSITE MICROWAVE IMAGE REVEALS A BROAD, DEFINED LLCC WITH FRAGMENTED DEEP CONVECTIVE BANDING OVER THE SOUTHERN SEMICIRCLE. UPPER-LEVEL ANALYSIS INDICATES A MARGINALLY-FAVORABLE ENVIRONMENT WITH STRONG VERTICAL WIND SHEAR (25 TO 30 KNOTS) OFFSET BY ROBUST POLEWARD OUTFLOW. GLOBAL MODELS INDICATE A WESTWARD TO WEST- SOUTHWESTWARD TRACK OVER THE NEXT 2 DAYS WITH GRADUAL INTENSIFICATION. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS to REMAIN MEDIUM. (2) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. NNNN