ABPW10 PGTW 120600 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS/120600Z-130600ZOCT2020// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/120151ZOCT2020// REF/B/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/120153ZOCT2020// NARR/REFS A AND B ARE TROPICAL CYCLONE WARNINGS.// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: (1) AT 12OCT20 0000Z, TROPICAL DEPRESSION 16W (CHAN-HOM) WAS LOCATED NEAR 30.3N 142.2E, APPROXIMATELY 325 NM SOUTH-SOUTHEAST OF YOKOSUKA, JAPAN, AND HAD TRACKED SOUTHWARD AT 04 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 25 KNOTS GUSTING TO 35 KNOTS. SEE REF A (WTPN31 PGTW 120300) FOR FURTHER DETAILS. (2) AT 12OCT20 0000Z, TROPICAL DEPRESSION 18W (EIGHTEEN) WAS LOCATED NEAR 17.7N 117.2E, APPROXIMATELY 287 NM NORTHWEST OF MANILA, PHILIPPINES, AND HAD TRACKED WESTWARD AT 10 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 30 KNOTS GUSTING TO 40 KNOTS. SEE REF B (WTPN33 PGTW 120300) FOR FURTHER DETAILS. (3) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: (1) AN AREA OF CONVECTION (INVEST 94W) HAS PERSISTED NEAR 9.2N 131.0E, APPROXIMATELY 300 NM NORTHWEST OF PALAU. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND AN 112291Z SSMIS 91GHZ IMAGE REVEAL A BROAD LOW LEVEL CIRCULATION WITH DISORGANIZED FLARING CONVECTION. INVEST 94W IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH LOW (<15KTS) VERTICAL WIND SHEAR, GOOD EQUATORWARD AND POLEWARD OUTFLOW, AND WARM (29-30C) SEA SURFACE TEMPERATURES. GLOBAL MODELS ARE IN SOME AGREEMENT THAT INVEST 94W WILL CONTINUE TO TRACK NORTHWESTWARD AND MAKE LANDFALL IN THE CENTRAL PHILIPPINES BEFORE CONSOLIDATING FURTHER IN THE SOUTH CHINA SEA. 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 IS 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