ABIO10 PGTW 151800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN /OCEAN/151800Z-161800ZMAR2021// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/150752ZMAR2021// 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 15MAR21 0600Z, TROPICAL CYCLONE 24S (HABANA) WAS LOCATED NEAR 22.5S 71.3E, APPROXIMATELY 795 NM EAST-SOUTHEAST OF PORT LOUIS, MAURITIUS, AND HAD TRACKED SOUTH- SOUTHWESTWARD AT 02 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 50 KNOTS GUSTING TO 65 KNOTS. SEE REF A (WTXS32 PGTW 150900) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN