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: 703 AM EDT Tue May 12 2026
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Today: N winds 5 to 10 kt, becoming SW 10 to 15 kt this afternoon. Seas 2 to 3 ft. Wave detail: SE 3 ft at 8 seconds and NW 2 ft at 3 seconds.

Tonight: SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds.

Wed: S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds.

Wed Night: S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave detail: SE 4 ft at 7 seconds. A chance of showers after midnight.

Thu: SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: S 3 ft at 6 seconds and SE 3 ft at 9 seconds. Patchy fog. Showers.

Thu Night: S winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave detail: S 3 ft at 7 seconds. Showers, mainly in the evening. Patchy fog in the evening.

Fri And Fri Night: NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.

Sat And Sat Night: SW winds 10 to 15 kt with gusts up 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.







Zone Forecast: Block Island Sound (ANZ237)

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