FZPN23 KWNM 090609 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC ISSUED BY NWS Honolulu HI 1109 PM PDT Thu May 8 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...High pressure will build E across the N and central waters tonight, then weaken later Fri and Fri night. By Sat night another area of high pressure will build in across the N and central waters, then shift farther S over the central and S waters Sun through Mon night. A cold front will move E into the northern waters Sat, then dissipate across the central waters later Sat or Sat night. A coastal trough will develop over central and S California Sun through early Mon, then weaken into Mon night. A cold front will approach the area Sun, move across the N an central waters Sun night and Mon, then through the southern waters later Mon and Mon night. A trough will develop along the entire coast Tue and Tue night as high pressure builds in from the N and NW of the region. Point Saint George to Point Arena .TONIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft. .FRI...N winds 15 to 25 kt. Seas 6 to 10 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft. .SAT...N to NW winds 15 to 25 kt. Seas 6 to 10 ft. .SAT NIGHT...W to NW winds 15 to 25 kt. Seas 5 to 9 ft. .SUN...SW winds 10 to 20 kt. Seas 4 to 7 ft. .SUN NIGHT...W to NW winds 20 to 30 kt. Seas 6 to 11 ft. .MON...NW winds 20 to 30 kt. Seas 9 to 14 ft. .MON NIGHT...N winds 20 to 30 kt. Seas 10 to 14 ft. .TUE...N to NW winds 20 to 30 kt. Seas 8 to 12 ft. .TUE NIGHT...N winds 20 to 30 kt. Seas 8 to 12 ft. Point Arena to Point Piedras Blancas ...GALE FORCE WINDS POSSIBLE SAT NIGHT... .TONIGHT...N winds 10 to 20 kt. Seas 5 to 8 ft. .FRI...N to NW winds 15 to 25 kt. Seas 5 to 8 ft. .FRI NIGHT...N to NW winds 20 to 30 kt. Seas 5 to 8 ft. .SAT...NW winds 20 to 30 kt. Seas 5 to 9 ft. .SAT NIGHT...NW winds 25 to 35 kt. Seas 5 to 9 ft. .SUN...NW winds 20 to 30 kt. Seas 5 to 8 ft. .SUN NIGHT...W winds 15 to 25 kt. Seas 6 to 10 ft. .MON...NW winds 15 to 25 kt. Seas 9 to 14 ft. .MON NIGHT...NW winds 15 to 25 kt. Seas 10 to 15 ft. .TUE...N to NW winds 20 to 30 kt. Seas 8 to 13 ft. .TUE NIGHT...N to NW winds 20 to 30 kt. Seas 8 to 13 ft.