ABPW10 PGTW 140600 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS/140600Z-150600ZFEB2021// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 91W) PREVIOUSLY LOCATED NEAR 4.9N 142.5E IS NOW LOCATED NEAR 6.0N 139.8E, APPROXIMATELY 225 NM SOUTHEAST OF YAP. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 140417Z AMSR2 89GHZ MICROWAVE PASS REVEALS DISORGANIZED BANDING WITH FLARING CONVECTION IN THE NORTHEAST PERIPHERY WRAPPING INTO A WEAK LOW LEVEL CIRCULATION CENTER. UPPER LEVEL ANALYSIS INDICATES INVEST 91W IS IN A MARGINAL ENVIRONMENT FOR POTENTIAL TROPICAL DEVELOPMENT WITH FAIR NORTHWESTWARD OUTFLOW, MODERATE (15-20KT) VERTICAL WIND SHEAR, AND WARM (29-30C) SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN AGREEMENT THAT INVEST 91W WILL TRACK WESTWARD WITH POSSIBLE CONSOLIDATION OVER THE NEXT 5 DAYS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10 TO 15 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 REMAINS LOW. (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: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN