ABIO10 PGTW 031800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN/031800Z-041800ZOCT2021// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/031351ZOCT2021// AMPN/REF A IS A TROPICAL CYCLONE WARNING.// RMKS/ 1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: (1) AT 03OCT21 1200Z, TROPICAL CYCLONE 03B (SHAHEEN-GULAB) WAS LOCATED NEAR 24.0N 58.1E, APPROXIMATELY 219 NM NORTH OF MASIRAH ISLAND, AND HAD TRACKED WESTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 65 KNOTS GUSTING TO 80 KNOTS. SEE REF A (WTIO31 PGTW 031500) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. 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: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN