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...SW wind 40 kt. Seas 21 ft. Rain showers. .TONIGHT...SW wind 35 kt increasing to 45 kt after midnight. Seas 23 ft. Rain showers. .SAT...SW wind 40 kt. Seas 24 ft. Rain showers. .SAT NIGHT...W wind 35 kt. Seas 17 ft. .SUN THROUGH MON...NW wind 30 kt. Seas 13 ft. .TUE...W wind 20 kt. Seas 6 ft.