Hazardous Weather Conditions
Last Update: 403 AM EDT Sat May 31 2025
For More Weather Information:
20NM W Hyannis MA
Marine Zone Forecast
...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH THIS EVENING...
Today
S winds 15 to 20 kt, becoming SW 20 to 25 kt this afternoon. Gusts up to 35 kt. Seas 2 to 4 ft, building to 4 to 6 ft this afternoon. Wave detail: S 3 ft at 5 seconds, becoming SW 4 ft at 5 seconds and S 4 ft at 8 seconds. Areas of fog. Showers with a slight chance of tstms this morning. Some tstms may produce heavy rainfall this morning. Vsby 1 to 3 nm.
Tonight
W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave detail: SW 4 ft at 5 seconds and S 4 ft at 9 seconds.
Sun
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave detail: SW 4 ft at 5 seconds and SW 3 ft at 9 seconds.
Sun Night
SW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave detail: SW 4 ft at 6 seconds and S 2 ft at 9 seconds.
Mon And Mon Night
SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: SW 2 ft at 7 seconds.
Tue Through Wed Night
SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave detail: SW 2 ft at 3 seconds and S 1 foot at 7 seconds.
winds and seas higher in and near tstms.
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.
winds and seas higher in and near tstms.
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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