Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. .TODAY...NW wind 20 kt becoming SE in the afternoon. Seas 9 ft. .TONIGHT...SE wind 35 kt. Seas 12 ft. Rain. .THU...SW wind 40 kt. Seas 15 ft building to 21 ft in the afternoon. .THU NIGHT...SW wind 45 kt. Seas 37 ft. .FRI...W wind 45 kt. Seas 38 ft. .SAT...NW wind 35 kt. Seas 22 ft. .SUN...S wind 30 kt. Seas 19 ft.