FZPN23 KWNM 100540 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 1040 PM PDT Sun Aug 9 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...High pressure will persist W of the waters through Fri and begin weakening Fri night. A trough will continue along the California coast through Fri night. Point Saint George to Point Arena ...GALE WARNING... .TONIGHT...N winds 20 to 30 kt. Seas 9 to 13 ft. .MON...N winds 20 to 30 kt. Seas 8 to 12 ft. .MON NIGHT...N winds 25 to 35 kt. Seas 8 to 12 ft. .TUE...N winds 20 to 30 kt. Seas 8 to 12 ft. .TUE NIGHT...N winds 20 to 30 kt. Seas 8 to 12 ft. .WED...N winds 20 to 30 kt. Seas 8 to 13 ft. .WED NIGHT...N winds 20 to 30 kt. Seas 8 to 12 ft. .THU...N winds 20 to 30 kt. Seas 7 to 12 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. .FRI...N winds 15 to 25 kt. Seas 5 to 9 ft. .FRI NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. Point Arena to Point Piedras Blancas .TONIGHT...N to NW winds 20 to 30 kt. Seas 7 to 11 ft. .MON...N winds 15 to 25 kt. Seas 7 to 12 ft. .MON NIGHT...N winds 20 to 30 kt. Seas 7 to 11 ft. .TUE...N winds 20 to 30 kt. Seas 7 to 12 ft. .TUE NIGHT...N winds 20 to 30 kt. Seas 7 to 12 ft. .WED...N winds 20 to 30 kt. Seas 8 to 13 ft. .WED NIGHT...N winds 20 to 30 kt. Seas 7 to 11 ft. .THU...N winds 20 to 30 kt. Seas 7 to 12 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 6 to 11 ft. .FRI...N winds 15 to 25 kt. Seas 5 to 8 ft. .FRI NIGHT...N winds 10 to 20 kt. Seas 4 to 8 ft.