20NM W Hyannis MA

NW winds 25 to 30 kt with gusts up to 40 kt, diminishing to 15 to 20 kt with gusts up to 25 kt this afternoon. Seas 4 to 6 ft, subsiding to 3 to 4 ft this afternoon. Wave detail: W 6 ft at 8 seconds and S 1 foot at 11 seconds, becoming W 4 ft at 6 seconds and SE 1 foot at 11 seconds.

W winds 10 to 15 kt with gusts up to 20 kt, becoming SW 20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 5 ft in the afternoon. Wave detail: SW 2 ft at 6 seconds and E 1 foot at 10 seconds, becoming SW 4 ft at 5 seconds and E 1 foot at 10 seconds.

SW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave detail: SW 5 ft at 8 seconds and SE 1 foot at 11 seconds. Rain likely in the morning.

SE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Rain likely.

W winds 15 to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of rain.

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.