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20NM W Hyannis MA

Marine Zone Forecast

...GALE WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...

This Afternoon

N winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to 4 ft. Wave detail: N 4 ft at 6 seconds and E 2 ft at 10 seconds. A slight chance of rain and snow.

Tonight

N winds 15 to 20 kt with gusts up to 25 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft in the evening, then 1 foot or less. Wave detail: E 3 ft at 10 seconds and NW 2 ft at 5 seconds, becoming NE 1 foot at 3 seconds and W 1 foot at 5 seconds.

Thu

SW winds 15 to 20 kt, becoming W in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Wave detail: SW 4 ft at 5 seconds and E 2 ft at 10 seconds.

Thu Night

N winds 20 to 25 kt with gusts up to 30 kt. Seas around 3 ft. Wave detail: N 3 ft at 5 seconds and E 2 ft at 11 seconds. Light freezing spray.

Fri

N winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave detail: N 3 ft at 5 seconds and E 1 foot at 11 seconds. Light freezing spray in the morning.

Fri Night

N winds 5 to 10 kt. Seas 1 foot or less. Wave detail: NE 1 foot at 3 seconds and W 1 foot at 6 seconds. A chance of snow. Vsby 1 to 3 nm after midnight.

Sat

NE winds 10 to 15 kt. Seas around 2 ft. A chance of snow.

Sat Night And Sun

N winds 5 to 10 kt, becoming W. Seas around 2 ft.

Sun Night

SW winds 15 to 20 kt. Seas 2 to 4 ft. 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.