Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 211521 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 1021 AM EST Sun Jan 21 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-220415- 1021 AM EST Sun Jan 21 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Large high pressure will remain S of the waters today. Low pres will pass well W of the region late Monday, but its associated front will bring periods of rain and gusty southerly winds Mon night into Tue. Winds will shift to W to NW and remain gusty Wed and Thu. 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. $$ ANZ250-220415- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SW winds around 5 kt. Seas 1 foot or less. .MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM. .MON NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain. Vsby 1 NM or less. .TUE...SE winds 20 to 25 kt with gusts up to 30 kt, becoming S 25 to 30 kt with gusts up to 40 kt in the afternoon. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .THU...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-220415- Massachusetts Bay and Ipswich Bay- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds 5 to 10 kt, diminishing to around 5 kt. Seas 1 to 2 ft. .TONIGHT...SW winds around 5 kt. Seas 1 foot or less. .MON...NE winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. A chance of rain. Vsby 1 NM or less. .MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of rain. Vsby 1 NM or less. .TUE...SE winds 15 to 20 kt, becoming S 20 to 25 kt in the afternoon. Gusts up to 35 kt. Seas 5 to 8 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 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. $$ ANZ231-220415- Cape Cod Bay- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds 5 to 10 kt, becoming NW. Seas 1 foot or less. .TONIGHT...SW winds around 5 kt. Seas 1 foot or less. .MON...S winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. A chance of rain. Vsby 1 NM or less. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of rain. Vsby 1 NM or less. .TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-220415- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...NW winds 5 to 10 kt. Seas 2 to 3 ft. .TONIGHT...SW winds around 5 kt. Seas 2 to 3 ft. .MON...S winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM. .MON NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain. Vsby 1 NM or less. .TUE...S winds 20 to 25 kt with gusts up to 40 kt. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. Showers likely. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 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. $$ ANZ255-220415- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...NW winds 5 to 10 kt, becoming W. Seas 2 to 4 ft. .TONIGHT...W winds around 5 kt. Seas 2 to 3 ft. .MON...SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM. .MON NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of rain. Vsby 1 to 3 NM. .TUE...S winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas 7 to 10 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 10 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-220415- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds 5 to 10 kt. Seas 3 to 5 ft. .TONIGHT...W winds around 5 kt. Seas 2 to 3 ft. .MON...SE winds 5 to 10 kt. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of rain. Vsby 1 to 3 NM. .TUE...S winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 7 to 10 ft. A chance of showers. .WED...W winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to 10 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 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. $$ ANZ232-220415- Nantucket Sound- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds around 5 kt. Seas 1 foot or less. .TONIGHT...Light and variable winds, becoming SW around 5 kt after midnight. Seas 1 foot or less. .MON...SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less. A chance of rain. Vsby 1 NM or less. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of rain. Vsby 1 NM or less. .TUE...S winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-220415- Vineyard Sound- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds around 5 kt. Seas around 2 ft. .TONIGHT...SW winds around 5 kt. Seas around 2 ft. .MON...SE winds 5 to 10 kt. Seas 1 foot or less. A chance of rain. Vsby 1 NM or less. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of rain. Vsby 1 NM or less. .TUE...S winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 15 to 20 kt. Gusts up to 25 kt, increasing to 35 kt after midnight. Seas 3 to 5 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 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. $$ ANZ234-220415- Buzzards Bay- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...SW winds around 5 kt. Seas around 2 ft. .TONIGHT...SW winds around 5 kt. Seas 1 foot or less. .MON...SE winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. A chance of rain. Vsby 1 NM or less. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. A chance of rain. Vsby 1 NM or less. .TUE...S winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 35 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .WED...W winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-220415- Rhode Island Sound- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds around 5 kt. Seas 2 to 3 ft. .TONIGHT...SW winds around 5 kt. Seas around 2 ft. .MON...SE winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of rain. Vsby 1 to 3 NM. .TUE...S winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas 6 to 8 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .THU NIGHT...NW 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. $$ ANZ237-220415- Block Island Sound- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds around 5 kt. Seas 2 to 3 ft. .TONIGHT...W winds around 5 kt. Seas around 2 ft. .MON...SE winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. A chance of rain. Vsby 1 to 3 NM. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of rain. Vsby 1 to 3 NM. .TUE...S winds 20 to 25 kt. Gusts up to 30 kt, increasing to 40 kt in the afternoon. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 7 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-220415- Boston Harbor- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds around 5 kt. Waves 1 foot or less. .TONIGHT...Light and variable winds, becoming SW around 5 kt after midnight. Waves 1 foot or less. .MON...NE winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less. A chance of rain. Vsby 1 NM or less. .MON NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. Rain likely. Vsby 1 NM or less. .TUE...SE winds 10 to 15 kt with gusts up to 25 kt, becoming S 15 to 20 kt with gusts up to 40 kt in the afternoon. Waves 2 to 3 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers. .WED...W winds 10 to 15 kt with gusts up to 30 kt. Waves around 2 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .THU...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .THU NIGHT...NW 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. $$ ANZ236-220415- Narragansett Bay- 1021 AM EST Sun Jan 21 2018 .THIS AFTERNOON...W winds around 5 kt. Waves around 2 ft. .TONIGHT...W winds around 5 kt. Waves 1 foot or less. .MON...E winds around 5 kt. Waves 1 foot or less. A chance of rain. Vsby 1 to 3 NM. .MON NIGHT...SE winds 5 to 10 kt. Waves 2 to 4 ft. A chance of rain. Vsby 1 to 3 NM. .TUE...S winds 15 to 20 kt. Gusts up to 30 kt, increasing to 40 kt in the afternoon. Waves 4 to 6 ft, except 6 to 9 ft at the bay entrance. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt, increasing to 30 kt after midnight. Waves 3 to 5 ft. A chance of showers. .WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .THU...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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