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...SW wind 20 kt. Seas 12 ft. .TONIGHT...SW wind 15 kt. Seas 10 ft. .WED...SE wind 30 kt increasing to 45 kt in the afternoon. Seas 9 ft building to 15 ft in the afternoon. Rain. .WED NIGHT...SW wind 45 kt. Seas 18 ft. .THU THROUGH FRI...NW wind 50 kt. Seas 29 ft. .SAT...SW wind 35 kt. Seas 18 ft.