Coastal Waters Forecast
Issued by NWS Boston, MA

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309 FZUS51 KBOX 190904 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 404 AM EST Mon Nov 19 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-192215- 404 AM EST Mon Nov 19 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A weak weather system will move across the waters today bringing a chance of rain. Low pressure moves up from the Midwest and passes along the South Coasts of RI and Massachusetts Tuesday morning and midday. This will bring another chance of rain tonight and Tuesday. High pressure then builds cold and dry weather for Wednesday through Friday...including Thanksgiving Day. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the Current Hazards link above the map on the left. $$ ANZ250-192215- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 404 AM EST Mon Nov 19 2018 .TODAY...S winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt this afternoon. Seas around 3 ft. A chance of rain. Vsby 1 to 3 NM this morning. .TONIGHT...N winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Seas 2 to 3 ft. A chance of rain. Vsby 1 to 3 NM after midnight. .TUE...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 7 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 7 ft. A chance of rain in the evening. .WED...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 5 to 6 ft. A chance of showers in the afternoon. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 7 ft. .THU...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around 8 ft. .THU NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 6 ft. .FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-192215- Massachusetts Bay and Ipswich Bay- 404 AM EST Mon Nov 19 2018 .TODAY...S winds 5 to 10 kt, becoming NW this afternoon. Seas 1 foot or less, then around 2 ft this afternoon. A chance of rain. Vsby 1 to 3 NM this morning. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. A chance of rain in the evening, then rain likely after midnight with vsby 1 to 3 NM. .TUE...NE winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 5 to 6 ft. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of rain and snow in the evening with vsby 1 to 3 NM. .WED...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 3 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 4 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 5 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 4 ft. .FRI...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ231-192215- Cape Cod Bay- 404 AM EST Mon Nov 19 2018 .TODAY...S winds 5 to 10 kt, becoming W this afternoon. Seas 1 foot or less. A chance of rain, mainly this morning. .TONIGHT...N winds around 5 kt, becoming NE after midnight. Seas 1 foot or less. A chance of rain. Vsby 1 to 3 NM after midnight. .TUE...E winds 5 to 10 kt, becoming N 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas around 2 ft, building to 5 ft in the afternoon. Rain likely, mainly in the morning. Vsby 1 to 3 NM. .TUE NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 5 ft, subsiding to 3 ft after midnight. A chance of rain in the evening. .WED...W winds 10 to 15 kt. Gusts up to 30 kt. Seas around 4 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 5 ft. .THU...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around 6 ft. .THU NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas around 4 ft. .FRI...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-192215- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 404 AM EST Mon Nov 19 2018 .TODAY...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt this afternoon. Seas around 3 ft. A slight chance of rain. .TONIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Seas around 3 ft. A chance of rain after midnight with vsby 1 to 3 NM. .TUE...SE winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft, building to 5 ft in the afternoon. A chance of rain. Vsby 1 to 3 NM. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around 7 ft. A chance of rain in the evening. .WED...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 5 to 6 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 8 ft. .THU...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around 9 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 7 ft. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 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. $$ ANZ255-192215- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. A slight chance of rain. .TONIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas around 3 ft. .TUE...SE winds 10 to 15 kt, becoming W in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. A chance of rain. Vsby 1 to 3 NM in the morning. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around 5 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 5 to 6 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around 7 ft. .THU...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 7 ft. .THU NIGHT...NW winds 20 to 25 kt, becoming N 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 6 ft. .FRI...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-192215- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Seas around 3 ft. A slight chance of rain this morning. .TONIGHT...W winds 5 to 10 kt, becoming E after midnight. Seas around 3 ft. A chance of rain after midnight. .TUE...S winds 10 to 15 kt, becoming NW in the afternoon. Gusts up to 25 kt. Seas around 4 ft. A chance of rain. Vsby 1 to 3 NM in the morning. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 6 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around 7 ft. .THU...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 6 ft. .THU NIGHT...NW winds 20 to 25 kt, becoming N 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft. .FRI...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 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. $$ ANZ232-192215- Nantucket Sound- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Seas 1 foot or less. A slight chance of rain. .TONIGHT...NW winds around 5 kt, becoming NE after midnight. Seas 1 foot or less. A chance of rain after midnight with vsby 1 to 3 NM. .TUE...SE winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain. Vsby 1 to 3 NM. .TUE NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 3 ft. A chance of rain in the evening. .WED...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas around 3 ft. .WED NIGHT...W winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 4 to 5 ft. .THU...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 4 ft. .THU NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft. .FRI...NW winds 10 to 15 kt. Seas 2 to 3 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-192215- Vineyard Sound- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. A slight chance of rain. .TONIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Seas 1 foot or less. A chance of rain. Vsby 1 to 3 NM after midnight. .TUE...SE winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas around 2 ft. Rain likely, mainly in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. A chance of rain in the evening. .WED...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas around 3 ft, building to 5 ft in the afternoon. A chance of showers in the afternoon. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 4 ft. .THU...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 3 ft. .THU NIGHT...NW winds 15 to 20 kt. Gusts up to 30 kt. Seas 2 to 3 ft. .FRI...NW winds 10 to 15 kt. Seas around 2 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-192215- Buzzards Bay- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of rain, mainly this morning. .TONIGHT...NW winds around 5 kt, becoming NE after midnight. Seas 1 foot or less. A chance of rain. Vsby 1 to 3 NM after midnight. .TUE...SE winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Rain likely, mainly in the morning. Vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain in the evening. .WED...W winds 10 to 15 kt. Gusts up to 30 kt. Seas around 2 ft, building to 4 ft in the afternoon. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .FRI...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas 1 foot or less. .FRI NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-192215- Rhode Island Sound- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Seas around 3 ft. A slight chance of rain. .TONIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM after midnight. .TUE...SE winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft. Rain likely, mainly in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of rain in the evening. .WED...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas around 3 ft, building to 5 ft in the afternoon. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around 5 ft. .THU...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 4 ft. .THU NIGHT...NW winds 15 to 20 kt. Gusts up to 30 kt. Seas around 3 ft. .FRI...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...W 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. $$ ANZ237-192215- Block Island Sound- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of rain this morning. .TONIGHT...NW winds around 5 kt, becoming NE after midnight. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM after midnight. .TUE...SE winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas around 3 ft. Rain likely, mainly in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .WED...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 3 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 5 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 4 ft. .THU NIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. .FRI...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-192215- Boston Harbor- 404 AM EST Mon Nov 19 2018 .TODAY...S winds around 5 kt, becoming NW this afternoon. Waves 1 foot or less. Rain likely, mainly this morning with vsby 1 to 3 NM. .TONIGHT...N winds 5 to 10 kt. Waves 1 foot or less. A chance of rain in the evening, then rain likely after midnight with vsby 1 to 3 NM. .TUE...N winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft, except 4 to 5 ft at the outer harbor entrance. Rain. A chance of snow in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of snow in the evening with vsby 1 to 3 NM. .WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves around 2 ft. .THU...NW winds around 15 kt with gusts up to 30 kt. Waves around 2 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .FRI...W winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. 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. $$ ANZ236-192215- Narragansett Bay- 404 AM EST Mon Nov 19 2018 .TODAY...SW winds 5 to 10 kt. Waves around 2 ft. A chance of rain, mainly this morning. .TONIGHT...N winds around 5 kt. Waves around 2 ft. A chance of rain. Vsby 1 to 3 NM after midnight. .TUE...N winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. Rain likely, mainly in the morning. Vsby 1 to 3 NM. .TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of rain in the evening. .WED...W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves around 2 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 3 ft. .THU...NW winds 10 to 15 kt with gusts up to 30 kt. Waves around 2 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft in the evening, then 1 foot or less. .FRI...W winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...W winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

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