ABPW10 PGTW 110600 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS/110600Z-120600ZSEP2021// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/110152ZSEP2021// REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/110151ZSEP2021// REF/C/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/101651ZSEP2021// NARR/REFS A AND B ARE TROPICAL CYCLONE WARNINGS. REF C IS A /TROPICAL CYCLONE FORMATION ALERT.// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: (1) AT 11SEP21 0000Z, SUPER TYPHOON 19W (CHANTHU) WAS LOCATED NEAR 20.3N 122.0E, APPROXIMATELY 490 NM SOUTHWEST OF KADENA AB, AND HAD TRACKED NORTH-NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 145 KNOTS GUSTING TO 175 KNOTS. SEE REF A (WTPN32 PGTW 110300) FOR FURTHER DETAILS. (2) AT 11SEP21 0000Z, TROPICAL STORM 18W (CONSON) WAS LOCATED NEAR 16.0N 109.9E, APPROXIMATELY 92 NM EAST OF DA NANG, VIETNAM, AND HAD TRACKED WESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 50 KNOTS GUSTING TO 65 KNOTS. SEE REF B (WTPN31 PGTW 110300) FOR FURTHER DETAILS. (3) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 96W) PREVIOUSLY LOCATED NEAR 22.7N 124.9E IS NOW LOCATED NEAR 22.3N 121.1E, APPROXIMATELY 213 NM SOUTHWEST OF ISHIGAKIJIMA. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) AND RECENT PARTIAL SCATTEROMETER PASSES DO NOT SHOW A SEPARATE AND DISCREET LOW LEVEL CIRCULATION (LLC) AT THIS TIME. HOWEVER, MODEL FIELDS AND SURFACE OBSERVATIONS FROM THE REGION SUGGEST THAT A WEAK LLC MAY EXIST OVER OR VERY NEAR THE EAST COAST OF TAIWAN. WHATEVER LLC IS PRESENT IS MOVING RAPIDLY SOUTHWESTWARD TOWARDS STY 19W, AS IT IS ALREADY CAPTURED BY THE OVERALL LOW LEVEL FLOW ASSOCIATED WITH STY 19W. INVEST 96W IS EXPECTED TO BE FULLY ABSORBED BY STY 19W AND DISSIPATE AS A SEPARATE LLC WITHIN THE NEXT 6 TO 12 HOURS. INVEST 96W IS UNDER THE WESTERLY OUTFLOW FROM STY 19W, HOWEVER, VERTICAL WIND SHEAR IS MODERATE (10-15 KNOTS) AND SEA SURFACE TEMPERATURES (SST) ARE VERY WARM (30-31C). GLOBAL MODELS FAIL TO EVEN PICK UP A CIRCULATION ASSOCIATED WITH 96W, BUT THE HWRF STILL SHOWS SHARP TURNING ALONG THE COAST OF TAIWAN AND INDICATES A POSSIBILITY OF THE SYSTEM REACHING 25 KNOTS DURING A VERY BRIEF WINDOW WITHIN THE NEXT 6 TO 12 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS HIGH. SEE REF C (WTPN21 PGTW 101700) FOR FURTHER DETAILS. (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