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20NM W Hyannis MA

Marine Zone Forecast

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... ...FREEZING SPRAY ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING THROUGH FRIDAY AFTERNOON...

This Afternoon

W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave detail: W 4 ft at 7 seconds and E 1 foot at 14 seconds.

Tonight

W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave detail: W 4 ft at 7 seconds and E 1 foot at 14 seconds.

Fri

W winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: W 3 ft at 6 seconds and E 1 foot at 13 seconds.

Fri Night

W winds 15 to 20 kt. Seas 2 to 3 ft. Wave detail: W 3 ft at 6 seconds and E 1 foot at 12 seconds.

Sat

W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Wave detail: W 2 ft at 6 seconds and SE 1 foot at 11 seconds.

Sat Night

NW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave detail: SW 2 ft at 5 seconds and E 1 foot at 11 seconds, becoming W 1 foot at 5 seconds and E 1 foot at 10 seconds.

Sun Through Mon

NW winds 10 to 15 kt. Seas around 2 ft.

Mon Night

W winds 5 to 10 kt. Seas around 2 ft. A chance of snow.

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.