WTPH20 RPMM 051800 SECURITE TROPICAL CYCLONE WARNING FOR SHIPPING NR. 27F ISSUED AT 1800UTC, 05 OCTOBER 2023 BY DOST-PAGASA, PHILIPPINES TYPHOON KOINU (2314) 975HPA AT 1800UTC, PSTN 21.9N 118.5E MOV W 5KT MXWD 65KT NEAR CTR 64KT 20NM NE 20NM SE 20NM SW 20NM NW QUAD 48KT 30NM NE 30NM SE 30NM SW 30NM NW QUAD 34KT 50NM NE 50NM SE 50NM SW 50NM NW QUAD 12-HOUR FCST VLD AT 060600UTC PSTN 21.8N 117.4E, PRES 975HPA, MWXD 65KT 24-HOUR FCST VLD AT 061800UTC PSTN 21.8N 116.4E, PRES 975HPA, MWXD 65KT 36-HOUR FCST VLD AT 070600UTC PSTN 21.9N 115.9E, PRES 980HPA, MWXD 60KT 48-HOUR FCST VLD AT 071800UTC PSTN 21.9N 115.4E, PRES 985HPA, MWXD 55KT 60-HOUR FCST VLD AT 080600UTC PSTN 21.8N 114.8E, PRES 996HPA, MWXD 40KT 72-HOUR FCST VLD AT 081800UTC PSTN 21.6N 114.2E, PRES 1002HPA, MWXD 30KT 96-HOUR FCST VLD AT 091800UTC PSTN 20.5N 112.7E, PRES 1006HPA, MWXD LOWKT ALL VESSELS WITHIN 300 NM OF 21.9N 118.5E, SEND 3-HOURLY WX REPORTS. FINAL WARNING WEATHER MANILA=