Coastal Waters Forecast
Issued by NWS Boston, MA

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951 FZUS51 KBOX 221716 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 116 PM EDT Mon Oct 22 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-230600- 116 PM EDT Mon Oct 22 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A ridge of high pres will build south of the waters today and tonight. Weak low pres will then track across New England Tue, dragging a cold front across the waters Wed. High pres will build E from the Great Lakes Thu into Sat. 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. $$ ANZ250-230600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. .TONIGHT...SW winds 10 to 15 kt. Seas around 4 ft, subsiding to 2 ft after midnight. .TUE...S winds 10 to 15 kt. Gusts up to 25 kt in the afternoon. Seas 3 to 4 ft. A chance of showers in the morning, then showers likely in the afternoon. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers in the evening. .WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas around 3 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas around 5 ft. A chance of showers in the evening. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 5 ft. .THU NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 35 kt. Seas around 5 ft. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-230600- Massachusetts Bay and Ipswich Bay- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 10 to 15 kt. Seas around 3 ft. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. .TUE...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers in the morning, then showers likely in the afternoon. .TUE NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers in the evening. .WED...NW winds 10 to 15 kt. Gusts up to 30 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 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 35 kt. Seas around 3 ft. .FRI...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. 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. $$ ANZ231-230600- Cape Cod Bay- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .TUE...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of showers. .TUE NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Gusts up to 25 kt. Seas around 2 ft. .WED...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 4 ft. A chance of showers in the evening. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 4 ft. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 3 ft. .FRI NIGHT...W winds 5 to 10 kt with gusts up to 20 kt, becoming N after midnight. Seas around 2 ft in the evening, then 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-230600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. .TONIGHT...W winds 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Seas 3 to 4 ft. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 5 ft. A chance of showers in the evening. .WED...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 5 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas around 6 ft. A chance of showers. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 6 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas around 6 ft. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 5 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming N after midnight. 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. $$ ANZ255-230600- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 15 to 20 kt. Seas around 4 ft. .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft, building to 5 ft in the afternoon. .TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas around 7 ft. .WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 5 to 6 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 6 ft. A chance of showers in the evening. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 4 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 5 ft. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming NE 10 to 15 kt after midnight. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-230600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 15 to 20 kt. Seas around 3 ft. .TONIGHT...W winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Seas around 3 ft. .TUE...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft, building to 5 ft in the afternoon. .TUE NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas around 7 ft. .WED...NW 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. .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 with gusts up to 30 kt. Seas around 4 ft. .FRI...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming NE 10 to 15 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. $$ ANZ232-230600- Nantucket Sound- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 15 to 20 kt. Seas around 3 ft. .TONIGHT...W winds 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. .TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas around 3 ft. .WED...NW winds 10 to 15 kt with gusts up to 30 kt. Seas around 3 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. A chance of showers in the evening. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. .FRI...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming N after midnight. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-230600- Vineyard Sound- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 15 to 20 kt. Seas around 3 ft. .TONIGHT...W winds 15 to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. .TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 2 ft, building to 4 ft in the afternoon. A chance of showers. .TUE NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 4 ft. .WED...NW winds 10 to 15 kt with gusts up to 30 kt. Seas around 3 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. .THU...NW winds around 15 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. Seas around 3 ft. .FRI...NW winds 10 to 15 kt. Gusts up to 30 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming N after midnight. Seas 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. $$ ANZ234-230600- Buzzards Bay- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .TONIGHT...W winds 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. .TUE...S winds 10 to 15 kt. Gusts up to 25 kt in the afternoon. Seas around 2 ft, building to 4 ft in the afternoon. A chance of showers. .TUE NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 25 kt. Seas 3 to 4 ft. .WED...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas around 3 ft. .THU...NW winds 10 to 15 kt with gusts up to 30 kt. Seas around 3 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas around 3 ft. .FRI...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-230600- Rhode Island Sound- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 15 to 20 kt. Seas around 3 ft. .TONIGHT...W winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Seas around 3 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. .TUE NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas around 5 ft. .WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. A chance of showers. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 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. Seas around 3 ft. .FRI...NW winds 10 to 15 kt. Gusts up to 30 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Seas 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. $$ ANZ237-230600- Block Island Sound- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .TUE...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 4 ft. .WED...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 4 ft. A chance of showers in the morning. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. .THU...NW winds 10 to 15 kt with gusts up to 30 kt. Seas around 3 ft. .THU NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas around 3 ft. .FRI...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Seas 1 foot or less, then around 2 ft after midnight. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-230600- Boston Harbor- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...W winds around 5 kt. Waves around 2 ft. .TONIGHT...SW winds around 5 kt. Waves around 2 ft in the evening, then 1 foot or less. .TUE...S winds around 5 kt. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of showers in the morning, then showers likely in the afternoon. .TUE NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves 1 foot or less. A chance of showers in the evening. .WED...W winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves around 2 ft. A chance of showers. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves around 2 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 30 kt. Waves around 2 ft. .FRI...NW winds 5 to 10 kt with gusts up to 25 kt. Waves around 2 ft. .FRI NIGHT...NW winds around 5 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. $$ ANZ236-230600- Narragansett Bay- 116 PM EDT Mon Oct 22 2018 .THIS AFTERNOON...SW winds 10 to 15 kt. Waves around 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .TUE...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. A chance of showers. .TUE NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 25 kt. Waves around 3 ft. .WED...NW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Waves 2 to 3 ft. A chance of showers in the morning. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves around 3 ft. .THU...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 3 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves around 3 ft. .FRI...NW winds 5 to 10 kt with gusts up to 25 kt. Waves around 3 ft in the morning, then 1 foot or less. .FRI NIGHT...NW winds 5 to 10 kt, becoming N after midnight. Waves 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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