ABPW10 PGTW 050600 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH PACIFIC OCEANS/050600Z-060600ZSEP2022// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/050151ZSEP2022// AMPN/REF A IS A TROPICAL CYCLONE WARNING.// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: (1) AT 05SEP22 0000Z, TYPHOON 12W (HINNAMNOR) WAS LOCATED NEAR 29.8N 124.9E, APPROXIMATELY 382 NM SOUTHWEST OF BUSAN, SOUTH KOREA, AND HAD TRACKED NORTHWARD AT 12 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 110 KNOTS GUSTING TO 135 KNOTS. SEE REF A (WTPN31 PGTW 050300) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) AN AREA OF CONVECTION (INVEST 91W) HAS PERSISTED NEAR 24.4N 140.7E, APPROXIMATELY 49 NM SOUTHWEST OF IWO TO, JAPAN. A 050334Z AMSR2 89GHZ MICROWAVE IMAGE DEPICTS A PARTIALLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) THAT ALSO HAS A BROAD CIRCULATION WITH 12-17 KNOT WINDS. INVEST 91W DISPLAYS FAVORABLY LOW (5-10KTS) VERTICAL WIND SHEAR (VWS) ACCOMPANIED WITH WARM (30-31C) SEA SURFACE TEMPERATURES (SST). BASED ON MODEL GUIDANCE 91W WILL GRADUALLY BUILD AND HEAD GENERALLY NORTH NORTHWEST IN THE DIRECTION OF MAINLAND JAPAN OVER THE NEXT SEVERAL DAYS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 12 TO 17 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 UPGRADED TO 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