FZPN23 KWNM 220416 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 916 PM PDT Fri Aug 21 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 over the interior of California will persist through Wed night. Also, high pressure will remain centered W and NW of the waters tonight through Sun night, then drift E over the area by Wed and Wed night while becoming weaker. Point Saint George to Point Arena .TONIGHT...NW winds 5 to 15 kt. Seas 3 to 5 ft. .SAT...NW winds 15 to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .SUN...N to NW winds 20 to 30 kt. Seas 5 to 8 ft. .SUN NIGHT...N winds 15 to 25 kt. Seas 5 to 8 ft. .MON...N winds 15 to 25 kt. Seas 5 to 8 ft. .MON NIGHT...N winds 10 to 20 kt. Seas 4 to 7 ft. .TUE...N to NW winds 5 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...N to NW winds 5 to 15 kt. Seas 3 to 6 ft. .WED...N winds 10 to 20 kt. Seas 3 to 6 ft. .WED NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. Point Arena to Point Piedras Blancas .TONIGHT...NW winds 15 to 25 kt. Seas 3 to 6 ft. .SAT...NW winds 15 to 25 kt. Seas 3 to 6 ft. .SAT NIGHT...N to NW winds 15 to 25 kt. Seas 5 to 8 ft. .SUN...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .SUN NIGHT...NW winds 10 to 20 kt. Seas 5 to 8 ft. .MON...NW winds 10 to 20 kt. Seas 4 to 7 ft. .MON NIGHT...NW winds 5 to 15 kt. Seas 4 to 6 ft. .TUE...NW winds 10 to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...N to NW winds 10 to 20 kt. Seas 3 to 6 ft. .WED...N to NW winds 10 to 20 kt. Seas 3 to 6 ft. .WED NIGHT...NW winds 10 to 20 kt. Seas 4 to 7 ft.