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...SW wind 45 kt. Seas 20 ft. Rain showers. .SAT...SW wind 40 kt. Seas 22 ft. .SAT NIGHT...W wind 35 kt. Seas 18 ft. .SUN AND SUN NIGHT...NW wind 30 kt. Seas 13 ft. .MON...NW wind 30 kt. Seas 11 ft. .TUE THROUGH WED...W wind 20 kt. Seas 6 ft.