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: 406 PM EDT Sun Jul 6 2025


Tonight: SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. Patchy fog after midnight with vsby 1 nm or less.

Mon: SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog in the morning with vsby 1 nm or less.

Mon Night: SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds. Patchy fog. A chance of showers. A chance of tstms. Some tstms may produce heavy rainfall after midnight with vsby 1 to 3 nm.

Tue: SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave detail: S 4 ft at 7 seconds and W 1 foot at 4 seconds. Showers likely with a chance of tstms in the morning, then a chance of showers and tstms in the afternoon. Patchy fog in the morning. Some tstms may produce heavy rainfall in the morning with vsby 1 to 3 nm.

Tue Night: SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave detail: S 4 ft at 8 seconds and W 1 foot at 3 seconds. A chance of showers. A chance of tstms in the evening.

Wed: NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. Wave detail: S 4 ft at 7 seconds and SE 1 foot at 13 seconds. A chance of showers in the morning.

Wed Night: SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.

Thu: E winds around 10 kt. Seas 2 to 3 ft. A chance of showers.

Thu Night: SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Vsby 1 to 3 nm.

Fri And Fri Night: E winds around 10 kt. Seas 2 to 3 ft. A chance of showers.

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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