ABIO10 PGTW 121800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN /OCEAN/121800Z-131800ZMAR2021// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/120751ZMAR2021// 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: 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: (1) AT 12MAR21 0600Z, TROPICAL CYCLONE 24S (HABANA) WAS LOCATED NEAR 18.8S 71.7E, APPROXIMATELY 418 NM EAST OF PORT MATHURIN, RODRIGUES ISLAND, MAURITIUS, AND HAD TRACKED SOUTHWESTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 125 KNOTS GUSTING TO 150 KNOTS. SEE REF A (WTXS32 PGTW 120900) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN