Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 220516 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 116 AM EDT Sun Apr 22 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-221800- 116 AM EDT Sun Apr 22 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure will build over the waters overnight through Monday, then shift offshore on Tuesday. Low pressure will move north along the eastern seaboard Tuesday night and Wednesday, lifting over the waters on Thursday. 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. $$ ANZ250-221800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .MON...N winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. .TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. .WED...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Rain likely. .THU...S winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain. .THU NIGHT...W winds around 10 kt with gusts up to 20 kt. Seas 4 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-221800- Massachusetts Bay and Ipswich Bay- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SUN...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .MON...N winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of rain. .WED...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain likely. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 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. $$ ANZ231-221800- Cape Cod Bay- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SUN...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 1 foot or less. .SUN NIGHT...S winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. .MON...N winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas around 2 ft. A chance of rain. .WED...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain likely. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain. .THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-221800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...NW winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...N winds around 5 kt, becoming E around 5 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of rain. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain likely. .WED NIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Rain likely. .THU...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 5 to 8 ft. A chance of rain. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 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. $$ ANZ255-221800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...N winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of rain. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Rain likely. .WED NIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. A chance of rain. .THU...SW winds around 10 kt with gusts up to 20 kt. Seas 5 to 8 ft. A chance of rain. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-221800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds around 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .MON...N winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of rain. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Rain likely. .WED NIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 ft. A chance of rain. .THU...SW winds around 10 kt with gusts up to 20 kt. Seas 6 to 9 ft. A chance of rain. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 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. $$ ANZ232-221800- Nantucket Sound- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. .MON...N winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. A chance of rain. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. .WED NIGHT...SE winds 15 to 20 kt. Seas 2 to 4 ft. Rain likely. .THU...SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of rain. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-221800- Vineyard Sound- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .MON...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. A chance of rain. .WED...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Rain likely. .THU...SW winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of rain. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-221800- Buzzards Bay- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds around 5 kt. Seas 1 foot or less. .SUN...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .MON...N winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt after midnight. Seas 1 foot or less. A chance of rain. .WED...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain likely. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-221800- Rhode Island Sound- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SUN...NW winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .MON...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of rain. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. Rain likely. .THU...SW winds around 10 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of rain. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-221800- Block Island Sound- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SUN...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .MON...NE winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of rain. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. A chance of rain. .THU...S winds around 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of rain. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-221800- Boston Harbor- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .SUN...NW winds 5 to 10 kt, becoming NE in the afternoon. Waves 1 foot or less. .SUN NIGHT...S winds around 5 kt, becoming NW after midnight. Waves 1 foot or less. .MON...N winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .TUE...S winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of rain. .WED...SE winds 5 to 10 kt. Waves around 2 ft. Rain likely. .WED NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. Rain likely. .THU...S winds 5 to 10 kt. Waves 1 foot or less. A chance of rain. .THU 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. $$ ANZ236-221800- Narragansett Bay- 116 AM EDT Sun Apr 22 2018 .REST OF TONIGHT...NW winds around 5 kt. Waves 1 foot or less. .SUN...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Waves 1 foot or less. .MON...N winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves around 2 ft. .TUE...S winds 5 to 10 kt. Waves around 2 ft. .TUE NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of rain. .WED...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. Rain likely. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. Rain likely. .THU...SW winds 5 to 10 kt. Waves 2 to 4 ft. A chance of rain. .THU NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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