ABPW10 PGTW 070600 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS/070600Z-080600ZOCT2020// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/070151ZOCT2020// AMPN/REF A IS A TROPICAL CYCLONE WARNING.// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: (1) AT 07OCT20 0000Z, TROPICAL STORM 16W (CHAN-HOM) WAS LOCATED NEAR 25.1N 136.1E, APPROXIMATELY 456 NM EAST OF KADENA AB, OKINAWA, AND HAD TRACKED WEST-NORTHWESTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 60 KNOTS GUSTING TO 75 KNOTS. SEE REF A (WTPN31 PGTW 070300) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION (INVEST 91W) PREVIOUSLY LOCATED NEAR 12.3N 111.6E IS NOW LOCATED NEAR 12.5N 110.7E, APPROXIMATELY 257 NM SOUTHEAST OF DANANG, VIETNAM. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND A 062308Z SSMIS 91GHZ IMAGE REVEAL A BROAD LOW LEVEL CIRCULATION WITH FRAGMENTED FORMATIVE BANDING IN THE NORTHERN AND SOUTHERN SEMICIRCLES. A 070146Z ASCAT-B IMAGE REVEALS A BROAD CIRCULATION OF 10-15KTS WITH SOME ISOLATED 25KT WINDS DISPLACED TO THE NORTH. INVEST 91W IS IN A MARGINAL ENVIRONMENT AND IS EMBEDDED IN STRONG EASTERLY UPPER LEVEL FLOW WITH MODERATE TO STRONG (20- 30KTS) VERTICAL WIND SHEAR. INVEST 91W IS CURRENTLY MAKING LANDFALL AND GLOBAL MODELS INDICATE IT WILL CONTINUE TO TRACK WESTWARD OVER SOUTHEAST ASIA. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 12 TO 18 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 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