Hazardous Weather Conditions
Last Update: 1005 AM EDT Mon Mar 30 2026
For More Weather Information:
20NM W Hyannis MA
Marine Zone Forecast
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...
This Afternoon
SW winds 20 to 25 kt, increasing to 25 to 30 kt. Seas 3 to 5 ft. Wave detail: SW 5 ft at 7 seconds and SW 3 ft at 4 seconds. A slight chance of rain.
Tonight
SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave detail: SW 5 ft at 7 seconds and SW 3 ft at 4 seconds. A chance of rain after midnight.
Tue
SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave detail: SW 4 ft at 8 seconds and SW 3 ft at 4 seconds. Rain likely, mainly in the morning.
Tue Night
SW winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 4 to 6 ft. Wave detail: SW 6 ft at 8 seconds and SW 4 ft at 4 seconds.
Wed
SW winds 25 to 30 kt. Seas 4 to 6 ft. Wave detail: SW 6 ft at 8 seconds and SW 3 ft at 4 seconds. A chance of rain in the afternoon.
Wed Night
W winds 10 to 15 kt, becoming NE 15 to 20 kt after midnight. Seas 3 to 5 ft. Wave detail: SW 4 ft at 8 seconds and W 2 ft at 4 seconds. Rain likely.
Thu Through Fri Night
SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 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.
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.
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