WTPH20 RPMM 081800 SECURITE TROPICAL CYCLONE WARNING FOR SHIPPING NR. 04F ISSUED AT 1800UTC, 08 AUGUST 2025 BY DOST-PAGASA, PHILIPPINES LOW PRESSURE AREA 1008HPA AT 1800UTC, PSTN 18.4N 117.5E MOV WNW SLOWLY ALL VESSELS WITHIN 300 NM OF 18.4N 117.5E, SEND 3-HOURLY WX REPORTS. FINAL WARNING WEATHER MANILA=