ABPW10 PGTW 181230 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS REISSUED/181230Z-190600ZJAN2021// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/180752ZJAN2021// AMPN/REF A IS A TROPICAL CYCLONE WARNING.// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) AN AREA OF CONVECTION (INVEST 90W) HAS PERSISTED NEAR 8.2N 126.7E, APPROXIMATELY 92 NM NORTHEAST OF DAVAO, PHILIPPINES. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND AN 180723Z SSMI 85GHZ MICROWAVE IMAGE DEPICT A DEFINED LOW LEVEL CIRCULATION CENTER WITH PERSISTENT CONVECTION OVER THE NORTHERN SEMICIRCLE. AN 180116Z ASCAT-B IMAGE DEPICTS 25-30KT WINDS IN THE NORTHERN SEMICIRCLE BUT WEAKER 15-20KT WINDS IN THE SOUTHERN SEMICIRCLE. ENVIRONMENTAL ANALYSIS DEPICTS A MARGINAL ENVIRONMENT FOR DEVELOPMENT WITH MODERATE TO HIGH (>25KTS) EASTERLY VERTICAL WIND SHEAR, STRONG DIFFLUENCE ALOFT, AND WARM (29C) SEA SURFACE TEMPERATURES, OFFSET BY THE PROXIMITY TO LAND. GLOBAL MODELS ARE IN GENERAL AGREEMENT THAT INVEST 90W WILL TRACK POLEWARD ALONG THE EASTERN COASTLINE OF THE PHILIPPINES. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS MEDIUM. (2) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST): A. TROPICAL CYCLONE SUMMARY: (1) AT 18JAN21 0600Z, TROPICAL CYCLONE 11P (KIMI) WAS LOCATED NEAR 17.8S 147.1E, APPROXIMATELY 92 NM SOUTHEAST OF CAIRNS, AUSTRALIA, AND HAD TRACKED SOUTH-SOUTHEASTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 55 KNOTS GUSTING TO 70 KNOTS. SEE REF A (WTPS31 PGTW 180900) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: ADDED MEDIUM AREA IN PARA 1.B.(1).// NNNN