ABPW10 PGTW 270200 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS REISSUED/270200Z-270600ZOCT2020// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/261952ZOCT2020// AMPN/REF A IS A TROPICAL CYCLONE WARNING.// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: (1) AT 26OCT20 1800Z, TYPHOON 21W (MOLAVE) WAS LOCATED NEAR 13.2N 115.9E, APPROXIMATELY 472 NM EAST-SOUTHEAST OF DA NANG, VIETNAM, AND HAD TRACKED WESTWARD AT 18 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 90 KNOTS GUSTING TO 110 KNOTS. SEE REF A (WTPN32 PGTW 262100) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 99W) PREVIOUSLY LOCATED NEAR 12N 140E IS NOW LOCATED NEAR 15.5N 141.5E, APPROXIMATELY 224 NM NORTHWEST OF GUAM. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A CONSOLIDATING LOW LEVEL CIRCULATION (LLC) WITH PERSISTENT DEEP CONVECTION OVERHEAD. A 260012Z MHS METOP-B 89GHZ MICROWAVE IMAGE SHOWS LIMITED DEEP CONVECTION IN THE VICINITY OF THE LLC. FURTHERMORE, THE WIND FIELD DEPICTED IN A 262351Z ASCAT-B PASS DEPICTS WEAK (5-10 KTS) WINDS ALONG THE SOUTHWESTERN PERIPHERY OF THE SYSTEM CENTER, AND STRONGER (25-30 KTS) WINDS PRESENT ALONG THE NORTHEASTERN PERIPHERY. INVEST 99W IS CURRENTLY IN A MARGINAL ENVIRONMENT WITH MODERATE UPPER LEVEL OUTFLOW, WARM (30 TO 31 CELSIUS) SEA SURFACE TEMPERATURES AND LOW VERTICAL WIND SHEAR (10- 15KNOTS). GLOBAL MODELS ARE IN GOOD AGREEMENT THAT 99W WILL CONTINUE TO TRACK GENERALLY WEST-NORTHWESTWARD WITH MINIMAL INTENSIFICATION. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO MEDIUM. (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. 3. JUSTIFICATION FOR REISSUE: UPGRADED AREA IN PARA 1.B(1) TO MEDIUM// NNNN