"ABIO10 PGTW 171800\r\nMSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//\r\nSUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN/171800Z-\r\n181800ZAPR2025//\r\nREF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/171351ZAPR2025//\r\nAMPN/REF A IS A TROPICAL CYCLONE WARNING.//\r\nRMKS/\r\n   B. TROPICAL DISTURBANCE SUMMARY: NONE.\r\n   C. SUBTROPICAL SYSTEM SUMMARY: NONE.\r\n   B. TROPICAL DISTURBANCE SUMMARY:\r\n      (1) AN AREA OF CONVECTION (INVEST 99S) HAS PERSISTED NEAR 13.0S \r\n71.7E, APPROXIMATELY 338 NM SOUTH OF DIEGO GARCIA. ANIMATED ENHANCED \r\nINFRARED (EIR) SATELLITE IMAGERY DEPICT A POORLY ORGANIZED LOW LEVEL \r\nCIRCULATION CENTER (LLCC) WITH A BROAD AREA OF FLARING \r\nCONVECTION WITHIN THE SOUTHEASTERN QUADRANT. A 171611Z ASCAT-B IMAGE \r\nEMPHASIZES A BROAD WEAK CIRCULATION AT THE SURFACE. ENVIRONMENTAL \r\nANALYSIS REVEALS A MARGINALLY FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH \r\nMODERATE TO HIGH (20-25 KNOTS) VERTICAL WIND SHEAR, GOOD POLEWARD UPPER-\r\nLEVEL OUTFLOW, AND WARM (28-29 C) SEA SURFACE TEMPERATURES. \r\nDETERMINISTIC AND ENSEMBLE MODELS ARE IN FAIR AGREEMENT, SHOWING GRADUAL \r\nINTENSIFICATION IN THE SOUTH INDIAN OCEAN OVER THE NEXT 48 HOURS. \r\nMAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 TO 23 KNOTS. MINIMUM \r\nSEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR \r\nTHE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 \r\nHOURS IS LOW.\r\n      (2) NO OTHER SUSPECT AREAS.\r\n   C. SUBTROPICAL SYSTEM SUMMARY: NONE.//"