FZPN24 KWNM 201050 OFFN09 NAVTEX Marine Forecast for Washington and Oregon waters NWS Ocean Prediction Center Washington DC 350 AM PDT Mon Apr 20 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...Low pressure will pass S of the area today into tonight. A weak low pressure trough will develop along the coast tonight into Tue. By late Tue into Wed night an area of strong high pressure will build into the area from the W and NW. High pressure will then remain centered W of the waters Thu through Fri night. An area of low pressure will track S near Vancouver island Tue night, move to near Cape Flattery Wed into Wed night before meandering near the inner N waters Thu and dissipating Thu night. A low pressure trough will remain along the coast Fri and Fri night. Canadian border to 45N ...GALE FORCE WINDS POSSIBLE WED... .TODAY...N to NW winds 10 to 20 kt. Seas 4 to 8 ft. .TONIGHT...N winds 15 to 25 kt. Seas 4 to 7 ft. .TUE...N winds 15 to 25 kt. Seas 6 to 10 ft. Chance of rain. .TUE NIGHT...N winds 20 to 30 kt. Seas 7 to 13 ft. Chance of rain. .WED...NW winds 25 to 35 kt. Seas 10 to 16 ft. .WED NIGHT...N to NW winds 25 to 35 kt. Seas 10 to 16 ft. .THU...N winds 20 to 30 kt. Seas 8 to 13 ft. .THU NIGHT...N winds 20 to 30 kt. Seas 7 to 11 ft. .FRI...N winds 15 to 25 kt. Seas 6 to 10 ft. .FRI NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. 45N to Point Saint George .TODAY...S to SE winds 15 to 25 kt. Seas 6 to 10 ft. Chance of rain. .TONIGHT...S to SE winds 10 to 20 kt. Seas 5 to 9 ft. .TUE...Variable winds 5 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...NW winds 10 to 20 kt. Seas 5 to 9 ft. .WED...N to NW winds 15 to 25 kt. Seas 7 to 12 ft. .WED NIGHT...N to NW winds 15 to 25 kt. Seas 8 to 13 ft. .THU...N winds 15 to 25 kt. Seas 7 to 12 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 6 to 10 ft. .FRI...N winds 20 to 30 kt. Seas 6 to 10 ft. .FRI NIGHT...N winds 20 to 30 kt. Seas 6 to 10 ft.