ABIO10 PGTW 170900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN /REISSUED/170900Z-171800ZMAR2022// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/170751ZMAR2022// 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: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 91B) PREVIOUSLY LOCATED NEAR 5.1N 88.7E IS NOW LOCATED NEAR 5.4N 90.6E, APPROXIMATELY 487 NM WEST-SOUTHWEST OF PHUKET, THAILAND. ANIMATED ENHANCED MULTISPECTRAL SATELLITE IMAGERY (MSI) DEPICTS DEEP AND DISORGANIZED CONVECTION WITH LITTLE TO NO SIGN OF A DISCERNIBLE LOW LEVEL CIRCULATION. ENVIRONMENTAL ANALYSIS REVEALS MARGINALLY FAVORABLE CONDITIONS FOR DEVELOPMENT WITH ROBUST OUTFLOW ALOFT AND WARM (29- 30C) SEA SURFACE TEMPERATURES, OFFSET BY HIGH (25-30KT) VERTICAL WIND SHEAR. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT INVEST 91B WILL HAVE SLOW DEVELOPMENT AS IT TRACKS NORTHWARD OVER THE NEXT 24- 48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW. (2) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 2. SOUTH INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: (1) AT 17MAR22 0600Z, TROPICAL CYCLONE 20S (BILLY) WAS LOCATED NEAR 21.6S 93.2E, APPROXIMATELY 1163 NM WEST OF LEARMONTH, AUSTRALIA, AND HAD TRACKED SOUTH-SOUTHEASTWARD AT 15 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS GUSTING TO 40 KNOTS. SEE REF A (WTXS31 PGTW 170900) FOR THE FINAL WARNING ON THIS SYSTEM. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: ISSUED FINAL WARNING FOR TC 20S. // NNNN