FZPN23 KWNM 271012 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 312 AM PDT Wed May 27 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 coastal trough will persist today and tonight, while high pressure remains in place well W of the waters. The high will weaken Thu. A cold front will approach the N waters late Thu night, then move S through the N and central waters Fri through Sat before dissipating over the S waters Sat night. The coastal trough will redevelop behind the front Fri night, then persist through Sun night as high pressure gradually builds E into the N waters. Point Saint George to Point Arena ...GALE WARNING... .TODAY...N winds 25 to 35 kt. Seas 10 to 16 ft. .TONIGHT...N winds 25 to 35 kt. Seas 10 to 14 ft. Slight chance of showers. .THU...N winds 15 to 25 kt. Seas 9 to 14 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 8 to 12 ft. .FRI...N winds 15 to 25 kt. Seas 6 to 10 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 7 to 11 ft. .SAT...N winds 20 to 30 kt. Seas 8 to 12 ft. .SAT NIGHT...N winds 20 to 30 kt. Seas 9 to 13 ft. .SUN...N winds 20 to 30 kt. Seas 9 to 14 ft. .SUN NIGHT...N winds 25 to 35 kt. Seas 8 to 13 ft. Point Arena to Point Piedras Blancas .TODAY...N to NW winds 20 to 30 kt. Seas 11 to 17 ft. .TONIGHT...N to NW winds 15 to 25 kt. Seas 8 to 14 ft. Slight chance of showers. .THU...N winds 15 to 25 kt. Seas 8 to 13 ft. Slight chance of showers. .THU NIGHT...N winds 10 to 20 kt. Seas 7 to 12 ft. .FRI...N to NW winds 10 to 20 kt. Seas 6 to 10 ft. .FRI NIGHT...N to NW winds 15 to 25 kt. Seas 6 to 11 ft. .SAT...N winds 20 to 30 kt. Seas 7 to 11 ft. .SAT NIGHT...N winds 20 to 30 kt. Seas 8 to 14 ft. .SUN...N winds 20 to 30 kt. Seas 9 to 14 ft. .SUN NIGHT...N to NW winds 20 to 30 kt. Seas 8 to 13 ft.