FZPN23 KWNM 240422 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 922 PM PDT Sun Aug 23 2026 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 tonight through Fri night. Also, high pressure centered W and NW of the waters tonight drifts E over the area through Tue night while weakening. On Tue night into Wed a weak cold front will move E and SE over the N and central waters. High pressure will build in from the W and NW Wed night through Fri night as the coastal trough intensifies. Point Saint George to Point Arena .TONIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft. .MON...N winds 10 to 20 kt. Seas 5 to 9 ft. .MON NIGHT...NW winds 5 to 15 kt. Seas 3 to 6 ft. .TUE...W to NW winds 5 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...N to NW winds 10 to 20 kt. Seas 4 to 7 ft. .WED...NW winds 10 to 20 kt. Seas 5 to 8 ft. .WED NIGHT...NW winds 15 to 25 kt. Seas 6 to 9 ft. .THU...N to NW winds 15 to 25 kt. Seas 3 to 6 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 5 to 7 ft. .FRI...N winds 15 to 25 kt. Seas 4 to 6 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 4 to 7 ft. Point Arena to Point Piedras Blancas .TONIGHT...NW winds 10 to 20 kt. Seas 5 to 8 ft. .MON...NW winds 5 to 15 kt. Seas 4 to 7 ft. .MON NIGHT...NW winds 10 to 20 kt. Seas 3 to 6 ft. .TUE...N to NW winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...N to NW winds 10 to 20 kt. Seas 3 to 6 ft. .WED...N to NW winds 10 to 20 kt. Seas 3 to 6 ft. .WED NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 8 ft. .THU...N to NW winds 15 to 25 kt. Seas 5 to 8 ft. .THU NIGHT...N to NW winds 15 to 25 kt. Seas 6 to 9 ft. .FRI...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .FRI NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft.