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...S wind 45 kt. Seas 14 ft. Rain. .TONIGHT...S wind 35 kt increasing to 45 kt after midnight. Seas 15 ft building to 21 ft after midnight. Widespread rain showers. .THU...W wind 50 kt. From Shemya W, W wind 30 kt becoming NW 50 kt in the afternoon. Seas 27 ft. Widespread rain showers. .THU NIGHT...NW wind 50 kt. Seas 28 ft. .FRI...W wind 40 kt. Seas 23 ft. .SAT...S wind 40 kt. Seas 14 ft. .SUN...SW wind 40 kt. Seas 16 ft.