


Offshore Forecast
Issued by NWS
Issued by NWS
435 FZPN23 KWNM 181005 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 305 AM PDT Sat Oct 18 2025 Conditions given represent the highest within that period. ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed coastal waters forecasts... .SYNOPSIS...A trough along the California Coast will persist today. A high pressure ridge will build S into the outer northern waters today, followed by a cold front moving SE across the northern waters tonight through Sun. The front will then move SW away from the central waters Sun night, as ridging returns to the outer northern waters, and the coastal trough rebuilds along the northern and central California coast. The coastal trough will persist through Mon night then gradually weaken Tue through Wed. It will dissipate Wed night as a cold front moves SE into the northern waters. Point Saint George to Point Arena .TODAY...N winds 10 to 20 kt. Seas 9 to 14 ft. .TONIGHT...W to NW winds 15 to 25 kt. Seas 8 to 12 ft. .SUN...N winds 15 to 25 kt. Seas 11 to 18 ft. .SUN NIGHT...N winds 20 to 30 kt. Seas 13 to 18 ft. .MON...N winds 20 to 30 kt. Seas 11 to 18 ft. .MON NIGHT...N winds 20 to 30 kt. Seas 9 to 13 ft. .TUE...N winds 15 to 25 kt. Seas 9 to 15 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 11 to 17 ft. .WED...N to NW winds 5 to 15 kt. Seas 8 to 14 ft. .WED NIGHT...S to SW winds 10 to 20 kt. Seas 7 to 11 ft. Point Arena to Point Piedras Blancas .TODAY...N winds 10 to 20 kt. Seas 8 to 13 ft. .TONIGHT...N winds 10 to 20 kt. Seas 7 to 12 ft. .SUN...N winds 15 to 25 kt. Seas 7 to 10 ft. .SUN NIGHT...N winds 20 to 30 kt. Seas 10 to 17 ft. .MON...N winds 20 to 30 kt. Seas 11 to 18 ft. .MON NIGHT...N winds 15 to 25 kt. Seas 8 to 13 ft. .TUE...N winds 15 to 25 kt. Seas 7 to 13 ft. .TUE NIGHT...N to NW winds 10 to 20 kt. Seas 10 to 14 ft. .WED...N to NW winds 5 to 15 kt. Seas 7 to 13 ft. .WED NIGHT...N to NW winds 5 to 15 kt. Seas 6 to 10 ft.