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. .TONIGHT...W wind 20 kt. Seas 9 ft. .TUE...SW wind 30 kt. Seas 7 ft building to 11 ft in the afternoon. .TUE NIGHT...SW wind 30 kt. Seas 11 ft. Rain. .WED...SW wind 30 kt. Seas 11 ft. .WED NIGHT...S wind 25 kt. Seas 10 ft. .THU...S wind 25 kt. Seas 10 ft. .FRI THROUGH SAT...S wind 20 kt. Seas 7 ft.