Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 231716 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 116 PM EDT Mon Apr 23 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-240600- 116 PM EDT Mon Apr 23 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure over the waters today will shift east by Tuesday. Low pressure will move up the eastern seaboard Tuesday night and Wednesday bringing fog and showers, then crossing the waters by Thursday morning. Another storm will be moving up along the coast Friday night. 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. $$ ANZ250-240600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...S winds 5 to 10 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. A chance of showers. .WED...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 20 to 25 kt, becoming S 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-240600- Massachusetts Bay and Ipswich Bay- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt, becoming SE 15 to 20 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Showers likely. .WED...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 20 to 25 kt, becoming S 15 to 20 kt after midnight. Seas 2 to 4 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds 10 to 15 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. $$ ANZ231-240600- Cape Cod Bay- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...E winds around 5 kt. Seas 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Showers likely. .WED...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 20 to 25 kt, becoming S 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI...S winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-240600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...NE winds around 5 kt. Seas around 2 ft. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers. .WED...SE winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 7 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 25 to 30 kt, becoming S 20 to 25 kt after midnight. Seas 7 to 10 ft, except 9 to 14 ft S and E of Nantucket. Areas of fog. Showers. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 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. $$ ANZ255-240600- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...S winds around 5 kt. Seas 1 foot or less. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of showers. .WED...SE winds 15 to 20 kt with gusts up to 25 kt, increasing to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 7 to 10 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 20 to 25 kt, becoming S 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 9 to 12 ft. Showers likely. Vsby 1 to 3 NM. .THU...SW winds 15 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-240600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...SE 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. Showers. .WED...SE winds 15 to 20 kt with gusts up to 25 kt, increasing to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 7 to 10 ft. Areas of fog. Showers. Vsby 1 NM or less. .WED NIGHT...S winds 15 to 20 kt with gusts up to 30 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 8 to 13 ft. Showers likely. Vsby 1 to 3 NM. .THU...SW winds 15 to 20 kt. Seas 7 to 10 ft. .THU NIGHT...W winds 15 to 20 kt. Seas 4 to 7 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 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. $$ ANZ232-240600- Nantucket Sound- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...E winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of showers. .WED...SE winds 15 to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 3 to 5 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 20 to 25 kt, becoming S 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. Showers. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-240600- Vineyard Sound- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...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...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Showers. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...S winds 15 to 20 kt. Gusts up to 30 kt in the evening. Seas 4 to 7 ft. Showers likely. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-240600- Buzzards Bay- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Showers. .WED...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Showers. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-240600- Rhode Island Sound- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...SE winds 5 to 10 kt. Seas 1 foot or less. .TUE 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. Showers. .WED...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. .THU NIGHT...W winds 15 to 20 kt. Seas 3 to 5 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 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. $$ ANZ237-240600- Block Island Sound- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...S winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...SE winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Showers. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Areas of fog. Showers. Vsby 1 NM or less. .WED NIGHT...S winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 5 to 8 ft. Showers likely. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-240600- Boston Harbor- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Waves 1 foot or less. .TONIGHT...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. Showers. .WED...SE winds 5 to 10 kt. Waves around 2 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .THU...SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .THU NIGHT...W winds 5 to 10 kt. Waves around 2 ft. .FRI...S winds 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...S winds 5 to 10 kt with gusts up to 20 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. $$ ANZ236-240600- Narragansett Bay- 116 PM EDT Mon Apr 23 2018 .THIS AFTERNOON...S winds 5 to 10 kt. Waves 1 foot or less. .TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves 1 foot or less. .TUE...S winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. Showers. .WED...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Waves 2 to 4 ft. Areas of fog. Showers. Vsby 1 to 3 NM. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Waves 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt. Waves 2 to 4 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI...S winds 5 to 10 kt. Waves 2 to 3 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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