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...SE wind 30 kt increasing to 45 kt in the afternoon. Seas 8 ft building to 13 ft in the afternoon. Rain. .TONIGHT...SW wind 45 kt. Seas 17 ft. Widespread rain showers. .THU...SW wind 50 kt. Seas 28 ft. Widespread rain showers. .THU NIGHT...W wind 50 kt. Seas 29 ft. .FRI...NW wind 45 kt. Seas 27 ft. .SAT THROUGH SUN...SW wind 40 kt. Seas 17 ft.