ABIO10 PGTW 171800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN/171800Z- 181800ZJAN2024// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/170751ZJAN2024// REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/171351ZJAN2024// NARR/REFS A AND B ARE TROPICAL CYCLONE WARNINGS.// 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 17JAN24 0600Z, TROPICAL CYCLONE 06S (ANGGREK) WAS LOCATED NEAR 10.1S 94.0E, APPROXIMATELY 200 NM NORTHEAST OF COCOS ISLAND, AND HAD TRACKED SOUTH-SOUTHWESTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 50 KNOTS GUSTING TO 65 KNOTS. SEE REF A (WTXS32 PGTW 170900) FOR FURTHER DETAILS. (2) AT 17JAN24 1200Z, TROPICAL CYCLONE 05S (BELAL) WAS LOCATED NEAR 24.2S 63.6E, APPROXIMATELY 511 NM EAST-SOUTHEAST OF ST DENIS, AND HAD TRACKED EASTWARD AT 06 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 50 KNOTS GUSTING TO 65 KNOTS. SEE REF B (WTXS31 PGTW 171500) FOR FURTHER DETAILS. (3) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN