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 45 kt. Seas 19 ft. Rain. .WED...S wind 45 kt increasing to 70 kt in the afternoon. Seas 21 ft building to 30 ft in the afternoon. Rain. .WED NIGHT...W wind 50 kt. Gusts to 65 kt. Seas 27 ft. .THU AND THU NIGHT...SW wind 45 kt. Seas 27 ft. .FRI...W wind 40 kt. Seas 27 ft. .SAT...W wind 30 kt. Seas 18 ft. .SUN...W wind 25 kt. Seas 13 ft.