ABIO10 PGTW 231800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN /OCEAN/231800Z-241800ZJAN2021// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/231351ZJAN2021// REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/230752ZJAN2021// NARR/REFS A IS A TROPICAL CYCLONE WARNING. REF B IS A TROPICAL CYCLONE FINAL 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 23JAN21 0600Z, TROPICAL CYCLONE 12S (ELOISE) WAS LOCATED NEAR 20.4S 34.0E, APPROXIMATELY 363 NM WEST-NORTHWEST OF EUROPA ISLAND, AND HAD TRACKED WEST- SOUTHWESTWARD AT 09 KNOTS (KTS) OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 75 KNOTS GUSTING TO 90 KNOTS. SEE REF B (WTXS32 PGTW 230900) FOR THE FINAL WARNING ON THIS SYSTEM. (2) AT 23JAN21 1200Z, TROPICAL CYCLONE 13S (THIRTEEN) WAS LOCATED NEAR 15.1S 97.6E, APPROXIMATELY 1031 NM WEST-NORTHWEST OF LEARMONTH, AUSTRALIA, AND HAD TRACKED SOUTHWARD AT 07 KNOTS (KTS) OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 35 KNOTS GUSTING TO 45 KNOTS. SEE REF A (WTXS31 PGTW 231500) FOR FURTHER DETAILS. (3) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN