ABPW10 PGTW 121800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH PACIFIC OCEANS REISSUED/121800Z-130600ZMAR2023// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) AN AREA OF CONVECTION (INVEST 90P) HAS PERSISTED NEAR 14.6S 169.2E, APPROXIMATELY 196 NM NORTH-NORTHEAST OF PORT VILA, VANUATU. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY DEPICTS PERSISTENT DEEP CONVECTION ALONG THE SOUTHERN SEMICIRCLE OF A BROAD LOW-LEVEL CIRCULATION CENTER (LLCC). A 121438Z AMSR2 36GHZ MICROWAVE IMAGE REVEALS FORMATIVE, FRAGMENTED BANDING WRAPPING INTO AN ELONGATED BUT DEFINED LLCC. THE SYSTEM IS LOCATED ALONG THE NORTHERN PERIPHERY OF AN UPPER-LEVEL ANTICYCLONE WITHIN A MARGINALLY FAVORABLE ENVIRONMENT CHARACTERIZED BY LOW TO MODERATE (15 TO 20 KNOTS) EASTERLY VERTICAL WIND SHEAR AND BROAD DIFFLUENCE ALOFT. SST VALUES ARE CONDUCIVE AT 29C, HOWEVER, FRICTIONAL EFFECTS ASSOCIATED WITH VANUATU WILL HINDER SIGNIFICANT DEVELOPMENT. GLOBAL MODELS INDICATE A SLOW, ERRATIC SOUTHWARD TO SOUTHWESTWARD TRACK OVER THE NEXT TWO DAYS WITH GRADUAL DEVELOPMENT. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS LOW. (2) AN AREA OF CONVECTION (INVEST 91P) HAS PERSISTED NEAR 18.6S 173.1W, APPROXIMATELY 183 NM WEST OF NIUE ISLAND. ENHANCED INFRARED SATELLITE IMAGERY DEPICTS A CONSOLIDATING LOW-LEVEL CIRCULATION (LLC) WITH RAPIDLY ORGANIZING DEEP CONVECTION OVERHEAD. A 120943Z ASCAT-C BULLSEYE PASS REVEALS A SYMMETRIC CIRCULATION WITH 25 TO 30 KNOT WINDS AROUND THE LLC. INVEST 91P IS CURRENTLY SITUATED IN A FAVORABLE ENVIRONMENT CHARACTERIZED BY NEAR RADIAL OUTFLOW ALOFT, LOW (5-10KT) VWS, AND WARM (28-29C) SST. GLOBAL MODELS ARE IN AGREEMENT THAT INVEST 91P WILL GRADUALLY DEVELOP AS IT TRACKS EAST-SOUTHEASTWARD OVER THE NEXT 24-48 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 27 TO 32 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS MEDIUM. (3) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: ADDED AREA IN 2.B.(1) AS LOW AND 2.B.(2) AS MEDIUM.// NNNN