Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 142002 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 401 PM EDT Thu Mar 14 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-150900- 401 PM EDT Thu Mar 14 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pres approaches tonight and move through Fri, bringing increased winds and rain showers. High pres returns Sat. A frontal system pushes in on Sun, bringing more showers and perhaps gusty winds. Lingering showers possible early next week. $$ ANZ250-150900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of rain after midnight with vsby 1 NM or less. .FRI...SE winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain in the morning, then a chance of showers in the afternoon. Vsby 1 NM or less in the morning. .FRI NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. .SAT...NW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SUN...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-150900- Massachusetts Bay and Ipswich Bay- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. A chance of rain after midnight with vsby 1 NM or less. .FRI...E winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain in the morning, then a chance of showers in the afternoon. Vsby 1 NM or less in the morning. .FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...NW winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 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. $$ ANZ231-150900- Cape Cod Bay- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. A slight chance of rain after midnight with vsby 1 NM or less. .FRI...S winds around 10 kt, becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the morning with vsby 1 NM or less. .FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. .SAT...NW winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-150900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. A slight chance of rain after midnight with vsby 1 NM or less. .FRI...S winds 10 to 15 kt, becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain in the morning with vsby 1 NM or less. .FRI NIGHT...N winds 15 to 20 kt with gusts up to 25 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. .SAT...NW winds 5 to 10 kt. Seas 2 to 4 ft. .SAT NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 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. $$ ANZ255-150900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 401 PM EDT Thu Mar 14 2024 .TONIGHT...E winds around 5 kt, becoming SE 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. Patchy fog this evening with vsby 1 NM or less. .FRI...S winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. .SAT...N winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .MON THROUGH TUE...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-150900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. Patchy fog this evening. A slight chance of rain after midnight. Vsby 1 NM or less. .FRI...SW winds 10 to 15 kt, becoming W in the afternoon. Gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. .SAT...N winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft. .SUN AND SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 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. $$ ANZ232-150900- Nantucket Sound- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 1 foot or less. .FRI...S winds 10 to 15 kt, becoming NW in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain in the morning with vsby 1 NM or less. .FRI NIGHT...N winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...N winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-150900- Vineyard Sound- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 1 foot or less. A slight chance of rain after midnight with vsby 1 NM or less. .FRI...S winds around 10 kt, becoming NW in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .SAT...N winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 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. $$ ANZ234-150900- Buzzards Bay- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog this evening. A slight chance of rain after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...S winds around 10 kt, becoming NW in the afternoon. Gusts up to 20 kt. Seas around 2 ft. A chance of rain in the morning with vsby 1 NM or less. .FRI NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas around 2 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE AND TUE NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-150900- Rhode Island Sound- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. A slight chance of rain after midnight with vsby 1 NM or less. .FRI...SW winds 10 to 15 kt, becoming NW in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...N winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...N winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. .SUN AND SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 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. $$ ANZ237-150900- Block Island Sound- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. A slight chance of rain after midnight with vsby 1 NM or less. .FRI...SW winds around 10 kt, becoming NW in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. .SUN AND SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-150900- Boston Harbor- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of rain after midnight with vsby 1 NM or less. .FRI...E winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. A chance of rain in the morning, then a chance of showers in the afternoon. Vsby 1 NM or less in the morning. .FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .SAT...NW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 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. $$ ANZ236-150900- Narragansett Bay- 401 PM EDT Thu Mar 14 2024 .TONIGHT...SE winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft after midnight. A chance of rain after midnight with vsby 1 NM or less. .FRI...SW winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .FRI NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. .SAT...NW winds around 5 kt, becoming SW 10 to 15 kt in the afternoon. Waves around 2 ft. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves 2 to 3 ft. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 4 ft. A chance of showers. .MON THROUGH TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

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