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20NM W Hyannis MA

Marine Zone Forecast

Overnight

NW winds 5 to 10 kt, increasing to 10 to 15 kt. Seas around 2 ft. Wave detail: W 2 ft at 6 seconds and E 1 foot at 9 seconds. A slight chance of flurries.

Thu

NW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas around 2 ft. Wave detail: NW 2 ft at 4 seconds and E 1 foot at 9 seconds.

Thu Night

W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: W 3 ft at 4 seconds and NE 1 foot at 10 seconds. Freezing spray.

Fri

W winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Wave detail: W 3 ft at 5 seconds and NE 1 foot at 10 seconds. Heavy freezing spray.

Fri Night

NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave detail: W 3 ft at 5 seconds. Freezing spray in the evening.

Sat

NW winds 5 to 10 kt. Seas 1 foot or less. Wave detail: W 1 foot at 4 seconds and N 1 foot at 8 seconds.

Sat Night

N winds 15 to 20 kt, becoming NE 25 to 35 kt with gusts up to 40 kt after midnight. Seas 2 to 3 ft, building to 4 to 6 ft after midnight. A chance of snow in the evening, then snow likely after midnight. A chance of freezing spray after midnight.

Sun And Sun Night

N winds 35 to 45 kt with gusts up to 50 kt. Seas 4 to 6 ft. A chance of freezing spray. Snow likely.

Mon

NW winds 25 to 30 kt. Seas 3 to 5 ft. A chance of light freezing spray.

Mon Night

NW winds 15 to 20 kt. Seas 2 to 3 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.

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.