Coastal Waters Forecast
Issued by NWS Boston, MA

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214 FZUS51 KBOX 140805 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 405 AM EDT Tue May 14 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-142100- 405 AM EDT Tue May 14 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres off the Mid Atlc seaboard will maintain modest SW wind through Wed. A low pres should move E from the Mid Atlc coast Wed night into Thu, shifting winds to the SE to E across the waters. This low pres slowly moves farther out to sea through Sat. $$ ANZ250-142100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. .TONIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 8 seconds. .WED...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. .WED NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 9 seconds. A chance of showers. .THU...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 3 seconds. A chance of rain. .THU NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. Wave Detail: E 3 ft at 6 seconds and SE 3 ft at 9 seconds. A chance of rain. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of rain. .FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. .SAT AND SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-142100- Massachusetts Bay and Ipswich Bay- 405 AM EDT Tue May 14 2024 .TODAY...S 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 E 2 ft at 8 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 8 seconds. .WED...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. .WED NIGHT...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 7 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 3 seconds. A chance of rain. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 6 seconds and SE 2 ft at 9 seconds. .SAT AND SAT NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain. 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. $$ ANZ231-142100- Cape Cod Bay- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. .WED...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 8 seconds. .WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 7 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 9 seconds. A chance of rain. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 2 ft at 3 seconds. A chance of rain. .FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT AND SAT NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-142100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 405 AM EDT Tue May 14 2024 .TODAY...S 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. .TONIGHT...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 E 2 ft at 8 seconds. .WED...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds. .WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 9 seconds and E 3 ft at 10 seconds. A chance of rain. .FRI...NE winds around 15 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: SE 5 ft at 9 seconds and E 5 ft at 9 seconds. A chance of rain. .FRI NIGHT AND SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of rain. 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. $$ ANZ255-142100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. .TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 12 seconds. .WED...S winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 8 seconds. .WED NIGHT...SE winds 10 to 15 kt, becoming E 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds, becoming S 4 ft at 8 seconds and E 3 ft at 8 seconds. A chance of showers in the evening, then showers likely after midnight. .THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: S 5 ft at 10 seconds and E 4 ft at 5 seconds. Rain likely. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: S 5 ft at 9 seconds and E 4 ft at 6 seconds. A chance of rain. .FRI AND FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds around 10 kt. Seas 3 to 5 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-142100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 12 seconds. .WED...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers in the afternoon. .WED NIGHT...SE winds 10 to 15 kt, becoming E 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds, becoming E 4 ft at 7 seconds and S 4 ft at 9 seconds. Showers likely. .THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Wave Detail: S 6 ft at 10 seconds and E 5 ft at 5 seconds. Rain likely, mainly in the morning. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 9 seconds and E 5 ft at 6 seconds. A chance of rain. .FRI AND FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 4 to 6 ft. .SAT AND SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain. 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. $$ ANZ232-142100- Nantucket Sound- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .WED...S winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: S 1 foot at 4 seconds and E 1 foot at 8 seconds, becoming S 1 foot at 3 seconds and E 1 foot at 8 seconds. .WED NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and SE 1 foot at 3 seconds. A chance of showers in the evening, then showers likely after midnight. .THU...E winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 4 seconds and S 2 ft at 10 seconds. Rain likely, mainly in the morning. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 4 seconds and S 2 ft at 9 seconds. A chance of rain. .FRI THROUGH SAT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-142100- Vineyard Sound- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SE 1 foot at 12 seconds. .WED...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and E 1 foot at 8 seconds. .WED NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and S 2 ft at 8 seconds. A chance of showers in the evening, then showers likely after midnight. .THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 10 seconds and E 2 ft at 4 seconds. Rain likely, mainly in the morning. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 9 seconds and NE 2 ft at 4 seconds. A chance of rain. .FRI AND FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 3 ft. .SAT AND SAT NIGHT...NE winds around 10 kt. Gusts up to 20 kt. Seas around 2 ft. A chance of rain. 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. $$ ANZ234-142100- Buzzards Bay- 405 AM EDT Tue May 14 2024 .TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: SW 1 foot at 4 seconds and S 1 foot at 7 seconds, becoming SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SE 1 foot at 12 seconds. .WED...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and E 1 foot at 8 seconds. .WED NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 9 seconds and S 1 foot at 4 seconds. A chance of showers in the evening, then showers likely after midnight. .THU...E winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 2 ft at 4 seconds and S 2 ft at 10 seconds. Rain likely, mainly in the morning. .THU NIGHT...NE winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at 9 seconds. A chance of rain. .FRI AND FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas 2 to 3 ft. .SAT AND SAT NIGHT...NE winds around 10 kt. Gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-142100- Rhode Island Sound- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SE 1 foot at 12 seconds. .WED...S winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SE 2 ft at 7 seconds and SE 1 foot at 12 seconds, becoming SE 1 foot at 7 seconds. .WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 7 seconds, becoming S 3 ft at 7 seconds and SE 1 foot at 11 seconds. A chance of showers in the evening, then showers likely after midnight. .THU...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 10 seconds and E 4 ft at 5 seconds. Rain likely, mainly in the morning. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 9 seconds and NE 4 ft at 5 seconds. A chance of rain. .FRI AND FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 3 to 5 ft. .SAT AND SAT NIGHT...NE winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of rain. 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. $$ ANZ237-142100- Block Island Sound- 405 AM EDT Tue May 14 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 8 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .WED...SE winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SE 2 ft at 6 seconds, becoming S 1 foot at 5 seconds and SE 1 foot at 8 seconds. A chance of showers in the afternoon. .WED NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds, becoming S 3 ft at 9 seconds and SE 2 ft at 6 seconds. Showers likely. .THU...NE winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 10 seconds and E 4 ft at 6 seconds. Rain likely, mainly in the morning. .THU NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 9 seconds and E 4 ft at 5 seconds. A chance of rain. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT AND SAT NIGHT...NE winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-142100- Boston Harbor- 405 AM EDT Tue May 14 2024 .TODAY...S winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Waves 1 foot or less, then around 2 ft this afternoon. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves 1 foot or less. .WED NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt after midnight. Waves 1 foot or less. A chance of showers. .THU AND THU NIGHT...NE winds 15 to 20 kt. Waves 2 to 3 ft. A chance of rain. .FRI AND FRI NIGHT...NE winds 15 to 20 kt, diminishing to around 10 kt. Waves 2 to 3 ft. .SAT AND SAT NIGHT...NE winds around 10 kt. Gusts up to 20 kt. Waves 2 to 3 ft. A chance of rain. 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. $$ ANZ236-142100- Narragansett Bay- 405 AM EDT Tue May 14 2024 .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Gusts up to 20 kt. Waves around 2 ft. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Waves around 2 ft in the evening, then 1 foot or less. .WED...S winds 5 to 10 kt. Waves 1 foot or less. .WED NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after midnight. Waves 2 to 4 ft. A chance of showers in the evening, then showers likely after midnight. .THU...E winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Waves 2 to 3 ft. Rain likely, mainly in the morning. .THU NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Waves 2 to 3 ft. A chance of rain. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SAT AND SAT NIGHT...NE winds around 10 kt. Gusts up to 20 kt. Waves 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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