FZPN23 KWNM 051647 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 947 AM PDT Tue May 5 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 across the northern waters will slowly drift SE today before dissipating along the northern California coast this afternoon. High pressure will build W of the waters tonight through Thu, then extend into the region Thu night as the California coastal trough redevelops. The trough will continue along the California coast through Fri night. A cold front will move into the far NW portion Thu night, then weaken as it moves into the central waters Fri into Fri night. The front dissipates over the S waters Sat as high pressure builds in from the W behind the front Sat into Sat night. Point Saint George to Point Arena .TODAY...NW winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...N to NW winds 10 to 20 kt. Seas 5 to 8 ft. .WED...N to NW winds 5 to 15 kt. Seas 5 to 8 ft. .WED NIGHT...N winds 5 to 15 kt. Seas 5 to 8 ft. .THU...N to NW winds 5 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...W to NW winds 5 to 15 kt. Seas 4 to 6 ft. .FRI...N to NW winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .SAT...N to NW winds 20 to 30 kt. Seas 5 to 9 ft. .SAT NIGHT...N winds 20 to 30 kt. Seas 8 to 11 ft. Point Arena to Point Piedras Blancas .TODAY...NW winds 5 to 15 kt. Seas 3 to 6 ft. .TONIGHT...NW winds 5 to 15 kt. Seas 4 to 7 ft. .WED...NW winds 5 to 15 kt. Seas 4 to 7 ft. .WED NIGHT...NW winds 10 to 20 kt. Seas 4 to 7 ft. .THU...NW winds 10 to 20 kt. Seas 4 to 7 ft. .THU NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .FRI...NW winds 15 to 25 kt. Seas 4 to 7 ft. .FRI NIGHT...NW winds 15 to 25 kt. Seas 5 to 9 ft. .SAT...NW winds 15 to 25 kt. Seas 5 to 9 ft. .SAT NIGHT...NW winds 15 to 25 kt. Seas 6 to 11 ft.