


Offshore Forecast
Issued by NWS
Issued by NWS
489 FZPN23 KWNM 171733 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 1033 AM PDT Sun Aug 17 2025 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 along the California coast will persist today through Mon night, weaken Tue and Tue night, then restrengthen Wed and Wed night and persist through Thu night. A cold front will drift S over the waters early today, stall by tonight, then dissipate Mon. High pressure will build from the NW today behind the front and expand SE through Mon night. The high will then persist across the waters through Thu night. Point Saint George to Point Arena .TODAY...NW winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...W to NW winds 10 to 20 kt. Seas 4 to 7 ft. .MON...Variable winds 5 to 15 kt. Seas 3 to 6 ft. .MON NIGHT...N to NW winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...NW winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. .WED...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .WED NIGHT...N winds 15 to 25 kt. Seas 5 to 7 ft. .THU...N winds 15 to 25 kt. Seas 5 to 8 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. Point Arena to Point Piedras Blancas .TODAY...NW winds 15 to 25 kt. Seas 4 to 7 ft. .TONIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .MON...NW winds 10 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NW winds 10 to 20 kt. Seas 4 to 6 ft. .TUE...NW winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...N to NW winds 15 to 25 kt. Seas 4 to 7 ft. .WED...NW winds 15 to 25 kt. Seas 4 to 7 ft. .WED NIGHT...N to NW winds 15 to 25 kt. Seas 5 to 9 ft. .THU...NW winds 15 to 25 kt. Seas 6 to 9 ft. .THU NIGHT...N to NW winds 15 to 25 kt. Seas 6 to 9 ft.