ABIO10 PGTW 051800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN/051800Z- 061800ZDEC2023// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/041951ZDEC2023// AMPN/REF A IS A TROPICAL CYCLONE FINAL WARNING.// RMKS/ 1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: (1) AT 04DEC23 1800Z, TROPICAL CYCLONE 08B (MICHAUNG) WAS LOCATED NEAR 14.3N 80.1E, APPROXIMATELY 74 NM NORTH OF CHENNAI, INDIA, AND HAD TRACKED NORTHWESTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 60 KNOTS GUSTING TO 75 KNOTS. SEE REF A (WTIO31 PGTW 042100) FOR THE FINAL WARNING ON THIS SYSTEM. (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