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. N wind 30 kt. Seas 11 ft. Snow. .THU. E of Saint Matthew Island, N wind 30 kt. W of Saint Matthew Island, N wind 30 kt diminishing to 20 kt in the afternoon. Seas 10 ft. .THU NIGHT. E of Saint Matthew Island, N wind 25 kt diminishing to 15 kt after midnight. W of Saint Matthew Island, NE wind 20 kt becoming E 30 kt after midnight. Seas 8 ft. .FRI. SE wind 40 kt. Seas 12 ft. .FRI NIGHT. SE wind 45 kt. Seas 14 ft. .SAT. SE wind 40 kt. Seas 13 ft. .SUN. S wind 20 kt. Seas 8 ft. .MON. W wind 20 kt. Seas 9 ft.