ABPW10 PGTW 100600 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS/100600Z-110600ZDEC2020// 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) THE AREA OF CONVECTION (INVEST 90P) PREVIOUSLY LOCATED NEAR 12.3S 177.8W IS NOW LOCATED NEAR 12.3S 179.4W, APPROXIMATELY 379 NM NORTH-NORTHEAST OF NADI, FIJI. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND A 100409Z SSMIS 91GHZ SATELLITE IMAGE DEPICT AN ELONGATED LOW LEVEL CIRCULATION (LLC) WITH FLARING CONVECTION IN THE NORTHEASTERN SEMICIRCLE. INVEST 90P IS CURRENTLY IN A MARGINALLY FAVORABLE ENVIRONMENT WITH STRONG OUTFLOW ALOFT, WARM (29-30C) SEA SURFACE TEMPERATURES, AND MODERATE TO HIGH (20-25KTS) VERTICAL WIND SHEAR. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT INVEST 90P WILL CONSOLIDATE AND TRACK WEST-SOUTHWESTWARD AND BEGIN FUJIWHARA INTERACTION WITH INVEST 91P TO THE WEST. MOST MODELS ARE RESOLVING 90P AS THE DOMINANT CIRCULATION WITH THE EXCEPTION OF GFS, ABSORBING INVEST 91P AS IT CONTINUES TO CONSOLIDATE AND INTENSIFY OVER THE NEXT SEVERAL DAYS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 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 REMAINS LOW. (2) THE AREA OF CONVECTION (INVEST 91P) PREVIOUSLY LOCATED NEAR 14.6S 169.2E IS NOW LOCATED NEAR 11.9S 169.7E, APPROXIMATELY 354 NM NORTH OF PORT VILA, VANUATU. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND A 100245Z AMSR2 89GHZ MICROWAVE IMAGE DEPICT A BROAD, FULLY EXPOSED LOW LEVEL CIRCULATION (LLC) WITH LITTLE TO NO DEEP CONVECTION. INVEST 91P IS CURRENTLY IN AN MARGINALLY FAVORABLE ENVIRONMENT WITH HIGH (25-30KTS) VERTICAL WIND SHEAR OFFSET BY GOOD POLEWARD OUTFLOW AND WARM (29-30C) SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN GOOD AGREEMENT THAT INVEST 91P WILL TRACK GENERALLY EAST-SOUTHEAST WITH LITTLE INTENSIFICATION BEFORE IT BEGINS FUJIWHARA INTERACTION WITH INVEST 90P TO ITS WEST, EVENTUALLY BEING ABSORBED; HOWEVER, GFS IS RESOLVING INVEST 91P AS THE DOMINANT CIRCULATION, INTENSIFYING IT OVER THE NEXT SEVERAL DAYS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1002 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW. (3) NO OTHER SUSPECT AREAS. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN