Coastal Waters Forecast
Issued by NWS Boston, MA

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208 FZUS51 KBOX 150805 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 404 AM EDT Sat Jun 15 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-152100- 404 AM EDT Sat Jun 15 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Cold front moves across the waters overnight. High pressure builds over New England Saturday and Sunday, and then moves offshore Monday. Conditions could approach small craft criteria today. $$ ANZ250-152100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 10 to 15 kt, diminishing to 5 to 10 kt this afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. A slight chance of showers this morning. .TONIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 10 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 9 seconds. .SUN NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 12 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-152100- Massachusetts Bay and Ipswich Bay- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 10 to 15 kt, becoming NE 5 to 10 kt this afternoon. Gusts up to 25 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and E 2 ft at 8 seconds. A slight chance of showers this morning. .TONIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and E 1 foot at 8 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and E 1 foot at 9 seconds. .SUN NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 7 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and NE 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 11 seconds. 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. $$ ANZ231-152100- Cape Cod Bay- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers this morning. .TONIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 8 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and SW 1 foot at 2 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-152100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers this morning with vsby 1 NM or less. .TONIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and N 2 ft at 4 seconds. .SUN...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and N 2 ft at 5 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and N 2 ft at 5 seconds. .MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and S 2 ft at 7 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 12 seconds. 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. $$ ANZ255-152100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 9 seconds and NW 2 ft at 5 seconds. A slight chance of showers this morning with vsby 1 NM or less. .TONIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 9 seconds and NE 2 ft at 4 seconds. .SUN...NE winds around 10 kt, becoming E in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and N 2 ft at 3 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 1 foot at 2 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SE 2 ft at 12 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-152100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 9 seconds and W 2 ft at 5 seconds. .TONIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and NE 2 ft at 3 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 1 foot at 2 seconds. .MON AND MON NIGHT...SW 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 2 ft at 12 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 2 ft at 11 seconds. 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. $$ ANZ232-152100- Nantucket Sound- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers this morning. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN...N winds around 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at 4 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 12 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-152100- Vineyard Sound- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt with gusts up to 20 kt. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: N 1 foot at 2 seconds and NW 1 foot at 5 seconds, becoming N 1 foot at 3 seconds and SW 1 foot at 5 seconds. A slight chance of showers this morning. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and S 1 foot at 2 seconds. .MON AND MON 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 NE 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 12 seconds. 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. $$ ANZ234-152100- Buzzards Bay- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt, becoming NE 10 to 15 kt this afternoon. Gusts up to 20 kt. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 8 seconds, becoming N 1 foot at 3 seconds and SW 1 foot at 5 seconds. A slight chance of showers this morning. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at 4 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 12 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-152100- Rhode Island Sound- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and N 1 foot at 2 seconds. .TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 2 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at 11 seconds. 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. $$ ANZ237-152100- Block Island Sound- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and N 1 foot at 2 seconds. .TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SE 1 foot at 13 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 7 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 12 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-152100- Boston Harbor- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt. Gusts up to 20 kt this morning. Waves around 2 ft. .TONIGHT...N winds 5 to 10 kt. Waves around 2 ft. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Waves around 2 ft. .SUN NIGHT...S winds around 10 kt, becoming SW after midnight. Waves around 2 ft. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 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. $$ ANZ236-152100- Narragansett Bay- 404 AM EDT Sat Jun 15 2024 .TODAY...N winds 5 to 10 kt. Gusts up to 20 kt this morning. Waves around 2 ft. .TONIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. .SUN...N winds 5 to 10 kt, becoming SE in the afternoon. Waves 2 to 3 ft. .SUN NIGHT...S winds 5 to 10 kt. Waves around 2 ft. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston