11NM SW Nantucket MA

NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave detail: W 8 ft at 8 seconds and S 3 ft at 11 seconds.

NW winds 10 to 15 kt, diminishing to around 5 kt after midnight. Seas 2 to 3 ft. Wave detail: W 3 ft at 5 seconds and S 2 ft at 9 seconds.

SW winds 15 to 20 kt, becoming W 20 to 25 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave detail: SW 4 ft at 5 seconds and SE 1 foot at 10 seconds, becoming SW 6 ft at 6 seconds and SE 1 foot at 10 seconds. Rain likely, mainly in the evening.

NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight.

W winds 20 to 25 kt. Seas 5 to 7 ft. A chance of rain.

NW winds 25 to 30 kt. Seas 5 to 7 ft.

seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.