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...W wind 40 kt. Seas 20 ft. .TONIGHT...W wind 40 kt diminishing to 30 kt after midnight. Seas 19 ft. .SAT...W wind 25 kt. Seas 13 ft. .SAT NIGHT...W wind 20 kt. Seas 9 ft. .SUN...W wind 20 kt. Seas 8 ft. .MON...W wind 15 kt. Seas 5 ft. .TUE...S wind 25 kt. Seas 14 ft.