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. Seas 6 ft building to 10 ft in the afternoon. Rain showers. .TONIGHT...S wind 30 kt. Seas 10 ft. Rain showers. .SAT...SW wind 35 kt. Seas 13 ft. Rain showers. .SAT NIGHT...SW wind 30 kt. Seas 13 ft. .SUN THROUGH MON...NW wind 30 kt. Seas 11 ft. .TUE...W wind 20 kt. Seas 7 ft.