FZPN23 KWNM 010610 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 1110 PM PDT Tue Mar 31 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 weak surface trough, along the California coast, will dissipate tonight into Wed. A cold front will move across the N portions of the waters tonight into Wed then move through the central waters Wed night, and S waters on Thu. A secondary weak trough will move across the N waters Wed night into early Thu. High pressure will build W and NW of the area Thu into Thu night and persist through Sun night. A coastal trough will redevelop Thu and persist Thu night through Sun night. Point Saint George to Point Arena .TONIGHT...S to SW winds 15 to 25 kt. Seas 5 to 7 ft. .WED...S to SW winds 20 to 30 kt. Seas 7 to 12 ft. Chance of rain. .WED NIGHT...NW winds 20 to 30 kt. Seas 11 to 16 ft. .THU...NW winds 10 to 20 kt. Seas 10 to 16 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 8 to 12 ft. .FRI...N winds 15 to 25 kt. Seas 7 to 11 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 7 to 11 ft. .SAT...N winds 15 to 25 kt. Seas 6 to 10 ft. .SAT NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. .SUN...N winds 15 to 25 kt. Seas 6 to 9 ft. .SUN NIGHT...N to NE winds 10 to 20 kt. Seas 5 to 7 ft. Point Arena to Point Piedras Blancas .TONIGHT...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. .WED...W to SW winds 15 to 25 kt. Seas 4 to 8 ft. .WED NIGHT...NW winds 10 to 20 kt. Seas 7 to 11 ft. .THU...N to NW winds 20 to 30 kt. Seas 8 to 12 ft. .THU NIGHT...N winds 20 to 30 kt. Seas 7 to 12 ft. .FRI...N winds 15 to 25 kt. Seas 7 to 12 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 6 to 10 ft. .SAT...N winds 10 to 20 kt. Seas 5 to 9 ft. .SAT NIGHT...N winds 10 to 20 kt. Seas 4 to 8 ft. .SUN...N winds 10 to 20 kt. Seas 5 to 8 ft. .SUN NIGHT...W winds 5 to 15 kt. Seas 4 to 7 ft.