FZPN23 KWNM 180552 OFFN08 NAVTEX Marine Forecast for northern California waters NWS Ocean Prediction Center Washington DC 1052 PM PDT Wed Sep 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 cold front will begin dissipate across the central waters tonight. Behind the front, a trough will develop along the N and Central California coast tonight and persist through Thu night, while strong high pressure builds in from the W. A weak area of low pressure will develop near the central California coast Fri and slide slowly SW through Sat, then diminish into a trough by late Sat while moving W of the regional waters. Another cold front will move into the N waters Sun into Sun night. A trough will reform late Sat night along the N and Central California coast, as ridging becomes established over the northern waters, then persists through Mon night. Point Saint George to Point Arena ...GALE WARNING... .TONIGHT...N winds 25 to 35 kt. Seas 9 to 13 ft. .THU...N winds 25 to 35 kt. Seas 11 to 17 ft. .THU NIGHT...N winds 25 to 35 kt. Seas 12 to 18 ft. .FRI...N winds 20 to 30 kt. Seas 9 to 15 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 6 to 10 ft. .SAT...N winds 10 to 20 kt. Seas 5 to 8 ft. .SAT NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .SUN...N to NW winds 15 to 25 kt. Seas 5 to 8 ft. .SUN NIGHT...N winds 15 to 25 kt. Seas 5 to 9 ft. .MON...N winds 15 to 25 kt. Seas 6 to 9 ft. .MON NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. Point Arena to Point Piedras Blancas ...GALE WARNING... .TONIGHT...N winds 20 to 30 kt. Seas 9 to 13 ft. .THU...N winds 25 to 35 kt. Seas 10 to 15 ft. .THU NIGHT...N winds 25 to 35 kt. Seas 10 to 15 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...Variable winds 10 to 20 kt. Seas 4 to 8 ft. .SAT NIGHT...N winds 5 to 15 kt. Seas 4 to 7 ft. .SUN...N winds 10 to 20 kt. Seas 4 to 7 ft. .SUN NIGHT...N winds 10 to 20 kt. Seas 5 to 8 ft. .MON...N winds 10 to 20 kt. Seas 5 to 8 ft. .MON NIGHT...N to NW winds 10 to 20 kt. Seas 5 to 8 ft.