FZPN23 KWNM 201734 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 1034 AM PDT Fri Mar 20 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 will persist along the California coast today into tonight, while high pressure remains in place over the outer central to northern waters. The high will dissipate today, followed by a cold front moving S through the northern and central waters tonight into Sat. A new area of high pressure will build across the N and central waters Sat through Sun night while the California coastal trough remains in place. A warm front will clip the NW waters as high pressure gets suppressed to the S Mon into Mon night. A cold front will move across the N waters Tue and approach the central waters Tue night. Point Saint George to Point Arena .TODAY...N to NW winds 20 to 30 kt. Seas 5 to 8 ft. .TONIGHT...N to NW winds 20 to 30 kt. Seas 7 to 10 ft. .SAT...N winds 20 to 30 kt. Seas 8 to 12 ft. .SAT NIGHT...N winds 20 to 30 kt. Seas 9 to 15 ft. .SUN...N winds 20 to 30 kt. Seas 11 to 15 ft. .SUN NIGHT...N winds 20 to 30 kt. Seas 9 to 13 ft. .MON...N to NE winds 15 to 25 kt. Seas 7 to 12 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 5 to 9 ft. .TUE...SW winds 10 to 20 kt. Seas 5 to 9 ft. .TUE NIGHT...N to NW winds 5 to 15 kt. Seas 6 to 10 ft. Point Arena to Point Piedras Blancas ...GALE WARNING... .TODAY...N winds 15 to 25 kt. Seas 6 to 9 ft. .TONIGHT...N winds 20 to 30 kt. Seas 6 to 11 ft. .SAT...N winds 20 to 30 kt. Seas 7 to 12 ft. .SAT NIGHT...N winds 25 to 35 kt. Seas 9 to 16 ft. .SUN...N winds 20 to 30 kt. Seas 10 to 15 ft. .SUN NIGHT...N winds 20 to 30 kt. Seas 8 to 13 ft. .MON...N to NW winds 15 to 25 kt. Seas 7 to 12 ft. .MON NIGHT...N winds 10 to 20 kt. Seas 5 to 9 ft. .TUE...NW winds 10 to 20 kt. Seas 4 to 7 ft. .TUE NIGHT...N winds 15 to 25 kt. Seas 4 to 7 ft.