11NM SW Nantucket MA

SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave detail: SW 6 ft at 7 seconds and E 1 foot at 8 seconds.

SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 5 to 7 ft. Wave detail: SW 7 ft at 8 seconds and S 1 foot at 12 seconds.

SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon. Wave detail: S 4 ft at 8 seconds, becoming SW 6 ft at 8 seconds and S 2 ft at 9 seconds. A chance of showers in the morning.

W winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. Light freezing spray.

SW winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers.

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.