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...Variable wind 10 kt E of Saint Matthew Island...SE 20 kt W of Saint Matthew Island. Seas 3 ft. .WED...E of Saint Matthew Island, S wind 15 kt becoming SE 25 kt in the afternoon. W of Saint Matthew Island, E wind 30 kt. Seas 8 ft. .WED NIGHT...E wind 45 kt. Seas 14 ft building to 21 ft after midnight. .THU...E wind 45 kt. Seas 23 ft. .THU NIGHT...NE wind 40 kt. Seas 19 ft. .FRI...NE wind 30 kt. Seas 14 ft. .SAT THROUGH SUN...NW wind 20 kt. Seas 8 ft.