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 25 kt becoming SE 40 kt in the afternoon. Seas 12 ft. Rain. .TONIGHT...S wind 40 kt. Seas 15 ft. Rain. .THU...SW wind 45 kt. Seas 24 ft building to 36 ft in the afternoon. Widespread rain showers. .THU NIGHT...W wind 50 kt. Seas 42 ft. .FRI...NW wind 45 kt. Seas 37 ft. .SAT...W wind 35 kt. Seas 19 ft. .SUN...SW wind 40 kt. Seas 20 ft.