Coastal Waters Forecast for Block Island Sound (ANZ237) (Text-Only)
NWS Forecast for: Block Island Sound (ANZ237)
Issued by: National Weather Service Norton, MA
Last Update: 706 PM EDT Fri Aug 29 2025
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Tonight: SW winds around 10 kt, becoming NW after midnight. Seas around 2 ft. Wave detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. Showers likely with a chance of tstms this evening. Some tstms may produce gusty winds, small hail, and heavy rainfall this evening.

Sat: NW winds around 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave detail: SE 2 ft at 7 seconds and NW 1 foot at 3 seconds.

Sat Night: NW winds around 10 kt. Seas around 2 ft. Wave detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds.

Sun: N winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave detail: SE 2 ft at 7 seconds and NW 1 foot at 3 seconds.

Sun Night: S winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave detail: SE 2 ft at 6 seconds and SW 1 foot at 2 seconds.

Mon And Mon Night: NE winds 5 to 10 kt. Seas around 2 ft. Wave detail: SE 2 ft at 7 seconds and NE 1 foot at 2 seconds.

Tue Through Wed Night: S winds 5 to 10 kt. Seas 2 to 3 ft.

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.







Zone Forecast: Block Island Sound (ANZ237)

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