Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 150502 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 101 AM EDT Mon Apr 15 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-151800- 101 AM EDT Mon Apr 15 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will brings shower chances to the waters this afternoon and early evening with the potential for a few rumbles of thunder across the southern waters. Drying out Monday through Tuesday with decreasing winds as a weak high pressure builds in. Weak low pressure system could bring light could bring more light rain towards the end of the week. $$ ANZ250-151800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas 3 to 5 ft. .MON NIGHT...SW winds around 10 kt, becoming W after midnight. Seas 2 to 4 ft. .TUE...W winds around 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .WED AND WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .THU THROUGH FRI...SE winds around 10 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-151800- Massachusetts Bay and Ipswich Bay- 101 AM EDT Mon Apr 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...W winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .WED AND WED NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. .THU THROUGH FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ231-151800- Cape Cod Bay- 101 AM EDT Mon Apr 15 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Isolated showers. Vsby 1 to 3 NM. .MON...W winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. .TUE...W winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. .TUE NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. .WED AND WED NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .THU THROUGH FRI...SE winds around 10 kt. Seas around 2 ft. .FRI NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-151800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Scattered showers with isolated tstms. .MON...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 3 to 5 ft. .TUE...W winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .WED AND WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .THU THROUGH FRI...SE winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds around 10 kt. Seas 3 to 4 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. $$ ANZ255-151800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Scattered showers with isolated tstms. .MON...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 5 to 7 ft. .MON NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 5 ft. .TUE...W winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. .WED...N winds around 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. .WED NIGHT...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .THU...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .THU NIGHT AND FRI...E winds 10 to 15 kt. Gusts up to 20 kt. Seas 3 to 4 ft. .FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-151800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 7 ft. Scattered showers with isolated tstms. Vsby 1 to 3 NM. .MON...W winds 5 to 10 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. .TUE...NW winds around 10 kt, becoming W in the afternoon. Seas 3 to 4 ft. .TUE NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 3 to 4 ft. .WED...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. .WED NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of showers. .THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. .FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...S winds around 10 kt. Seas 3 to 4 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. $$ ANZ232-151800- Nantucket Sound- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Scattered showers with isolated tstms. Vsby 1 NM or less. .MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .TUE NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. .WED AND WED NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. .THU THROUGH FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-151800- Vineyard Sound- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Scattered showers with isolated tstms. Vsby 1 NM or less. .MON...W winds 5 to 10 kt. Seas 2 to 4 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. .TUE NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. .WED...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. .WED NIGHT...SE winds around 10 kt. Seas 1 foot or less. A chance of showers. .THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI...SE winds around 10 kt. Seas around 2 ft. .FRI NIGHT...S winds around 10 kt. Seas around 2 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. $$ ANZ234-151800- Buzzards Bay- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Scattered showers. Vsby 1 NM or less. .MON...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. .WED...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. .WED NIGHT...SE winds around 10 kt. Seas 1 foot or less. A chance of showers. .THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI...SE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-151800- Rhode Island Sound- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Scattered showers with isolated tstms. Vsby 1 to 3 NM. .MON...W winds 5 to 10 kt. Seas 3 to 5 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. .WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .WED NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of showers. .THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI...E winds around 10 kt. Seas 2 to 3 ft. .FRI NIGHT...S 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. $$ ANZ237-151800- Block Island Sound- 101 AM EDT Mon Apr 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Scattered showers with isolated tstms. Vsby 1 NM or less. .MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas 3 to 5 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .TUE...W winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .WED...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .WED NIGHT...SE winds around 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of showers. .THU AND THU NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .FRI...E winds around 10 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-151800- Boston Harbor- 101 AM EDT Mon Apr 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .MON...W winds 5 to 10 kt. Waves 1 foot or less. .MON NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .TUE...W winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .WED AND WED NIGHT...SE winds 10 to 15 kt. Waves around 2 ft. .THU THROUGH FRI...SE winds 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...SW winds around 10 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-151800- Narragansett Bay- 101 AM EDT Mon Apr 15 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Waves 2 to 4 ft. Scattered showers. Vsby 1 NM or less. .MON...W winds 5 to 10 kt. Waves 2 to 4 ft. .MON NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. .TUE...NW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Waves 2 to 3 ft. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft. .WED...N winds 5 to 10 kt, becoming SE in the afternoon. Waves around 2 ft. .WED NIGHT...SE winds around 10 kt. Waves around 2 ft. A chance of showers. .THU AND THU NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .FRI...SE winds 5 to 10 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds around 10 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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