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. .TONIGHT...S wind 30 kt increasing to 40 kt after midnight. Seas 14 ft building to 19 ft after midnight. Rain showers. .FRI...SW wind 40 kt. Seas 21 ft. Rain showers. .FRI NIGHT...SW wind 35 kt increasing to 45 kt after midnight. Seas 23 ft. Rain showers. .SAT...W wind 45 kt. Seas 24 ft. .SAT NIGHT...W wind 35 kt. Seas 17 ft. .SUN...NW wind 25 kt. Seas 11 ft. .MON...NW wind 25 kt. Seas 7 ft. .TUE...NW wind 20 kt. Seas 5 ft.