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...N wind 15 kt. Seas 4 ft. .TONIGHT...NW wind 15 kt. Seas 4 ft. .SUN...E wind 20 kt increasing to 40 kt in the afternoon. Seas 5 ft building to 10 ft in the afternoon. Rain. .SUN NIGHT...SE wind 40 kt. Seas 17 ft. .MON...W wind 35 kt. Seas 29 ft. .TUE...W wind 30 kt. Seas 18 ft. .WED...W wind 30 kt. Seas 9 ft.