


Offshore Forecast
Issued by NWS
Issued by NWS
842 FZPN35 KWBC 181522 OFFN35 Marine Weather HF Voice Broadcast NWS Ocean Prediction Center Washington DC 822 AM PDT Sat Oct 18 2025 Washington and Oregon waters- Inner waters from 60 nm to 150 nm offshore. Outer waters from 150 nm to 250 nm offshore. Conditions given represent the highest within that period. Seas given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. .SYNOPSIS FOR WASHINGTON AND OREGON WATERS...A warm front moving E over the area will quickly be followed by a cold front moving E across the waters later today into tonight before moving inland Sun. The associated low pressure system will track E tonight, remaining N of the waters and quickly weakening. However, significant swell generated by this system will move E into the waters tonight. The swell will then gradually diminish Sun and Sun night. A high pressure ridge will build NE across the waters Sun night through Mon. Another weaker cold front will move E and then SE across the waters Mon night before dissipating on Tue. High pressure ridging will follow the front on Tue, before quickly moving inland ahead of the next cold front, passing over the waters Tue night into Wed. Yet another stronger cold front is expected to move E across the area late Wed night. Cape Flattery to Cape Lookout ...GALE WARNING... .TODAY...S to SW winds 20 to 30 kt. Seas 10 to 15 ft. Rain. .TONIGHT...W winds 30 to 40 kt. Seas building to 17 to 26 ft. Scattered showers and slight chance of tstms. .SUN...W to NW winds 25 to 35 kt. Seas 17 to 27 ft. Isolated showers. .SUN NIGHT...NW winds 15 to 25 kt. Seas 13 to 21 ft. Chance of showers. .MON...SW winds 15 to 25 kt. Seas subsiding to 9 to 14 ft. .MON NIGHT...W to SW winds 10 to 20 kt. Seas building to 12 to 22 ft. .TUE...S winds 10 to 20 kt. Seas 13 to 21 ft. .TUE NIGHT...S winds increasing to 25 to 35 kt. Seas 12 to 16 ft. .WED...W to SW winds 25 to 35 kt. Seas 10 to 17 ft. .WED NIGHT...S winds 25 to 35 kt. Seas 11 to 17 ft. Cape Lookout to Point St. George .TODAY...SW winds 15 to 25 kt. Seas 10 to 13 ft. Slight chance of showers. .TONIGHT...W winds 20 to 30 kt. Seas becoming 12 to 19 ft. Scattered showers. .SUN...NW winds 20 to 30 kt. Seas 15 to 23 ft. Slight chance of rain. .SUN NIGHT...N to NW winds diminishing to 10 to 20 kt. Seas 13 to 20 ft. .MON...N winds 15 to 25 kt. Seas subsiding to 9 to 14 ft. .MON NIGHT...N winds 20 to 30 kt. Seas 8 to 13 ft. .TUE...N winds 15 to 25 kt. Seas building to 11 to 18 ft. .TUE NIGHT...SW winds 20 to 30 kt. Seas 12 to 16 ft. .WED...W to SW winds 15 to 25 kt. Seas 9 to 14 ft. .WED NIGHT...S winds 20 to 30 kt. Seas 9 to 15 ft. .Forecaster Mills. Ocean Prediction Center.