Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 180802 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 402 AM EDT Mon Mar 18 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-182100- 402 AM EDT Mon Mar 18 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Dry today with a weak cold front crossing the waters late. Another weak cold front slides through on Tue. A frontal system pushes through on Wed bringing scattered showers. Gale force gusts possible late on Wed through Thu, but with drier weather as high pressure nudges in. Still dry with the high overhead on Fri. $$ ANZ250-182100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. A chance of showers in the afternoon. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 25 to 30 kt with gusts up to 35 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. A chance of showers. .THU AND THU NIGHT...W winds 25 to 30 kt, becoming NW 20 to 25 kt. Seas 4 to 6 ft. .FRI...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-182100- Massachusetts Bay and Ipswich Bay- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .WED...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers in the afternoon. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 25 to 30 kt after midnight. Seas 2 to 4 ft. A chance of showers in the evening. .THU THROUGH FRI...W winds 25 to 30 kt with gusts up to 35 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of snow. 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. $$ ANZ231-182100- Cape Cod Bay- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE NIGHT...W winds around 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .WED...SW winds around 10 kt. Seas around 2 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 20 to 25 kt with gusts up to 30 kt after midnight. Seas 2 to 4 ft. A chance of showers in the evening. .THU THROUGH FRI...W winds 20 to 25 kt with gusts up to 35 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-182100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 402 AM EDT Mon Mar 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY EVENING... .TODAY...W winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. .TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 3 to 5 ft. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...SW winds 10 to 15 kt, becoming W 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. A chance of showers in the evening. .THU AND THU NIGHT...W winds 25 to 30 kt, becoming NW 20 to 25 kt. Seas 5 to 7 ft. .FRI...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. 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. $$ ANZ255-182100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 402 AM EDT Mon Mar 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY EVENING... .TODAY...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 3 to 5 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. .TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W 25 to 30 kt with gusts up to 35 kt after midnight. Seas 5 to 7 ft. A chance of showers in the evening. .THU...W winds 25 to 35 kt with gusts up to 40 kt. Seas 5 to 8 ft. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-182100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 402 AM EDT Mon Mar 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY EVENING... .TODAY...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 3 to 4 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. .TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. .TUE NIGHT...W winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .WED...SW winds 15 to 20 kt. Seas 4 to 5 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, increasing to 25 to 30 kt with gusts up to 35 kt after midnight. Seas 5 to 7 ft. .THU...W winds 25 to 35 kt with gusts up to 40 kt. Seas 5 to 8 ft. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. 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. $$ ANZ232-182100- Nantucket Sound- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 3 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 2 to 3 ft. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft. .WED NIGHT...SW winds 15 to 20 kt, becoming W 25 to 30 kt after midnight. Seas 2 to 4 ft. A chance of showers in the evening. .THU THROUGH FRI...W winds 25 to 30 kt with gusts up to 35 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-182100- Vineyard Sound- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 3 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...W winds 15 to 20 kt, increasing to 25 to 30 kt after midnight. Seas 2 to 4 ft. .THU...W winds 25 to 30 kt with gusts up to 35 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. .FRI...W 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 rain. 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. $$ ANZ234-182100- Buzzards Bay- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. .TONIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .WED NIGHT...W winds 15 to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt after midnight. Seas 2 to 4 ft. .THU AND THU NIGHT...W winds 25 to 30 kt, becoming NW 15 to 20 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-182100- Rhode Island Sound- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 4 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED...SW winds 15 to 20 kt. Seas 3 to 4 ft. .WED NIGHT...W winds 15 to 20 kt, increasing to 25 to 30 kt with gusts up to 35 kt after midnight. Seas 3 to 5 ft. .THU...W winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .FRI...W 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 rain. 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. $$ ANZ237-182100- Block Island Sound- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 3 ft. .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt after midnight. Seas 3 to 5 ft. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-182100- Boston Harbor- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. .TONIGHT...W winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. .TUE...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. .WED AND WED NIGHT...W winds 25 to 30 kt. Waves around 2 ft. A chance of showers through the night. .THU THROUGH FRI...W winds 25 to 30 kt. Waves around 2 ft. .FRI NIGHT...SW winds around 10 kt. Waves 1 foot or less. A chance of snow. 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. $$ ANZ236-182100- Narragansett Bay- 402 AM EDT Mon Mar 18 2024 .TODAY...W winds 5 to 10 kt. Waves around 2 ft. .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves around 2 ft. .TUE...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .TUE NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Waves 2 to 4 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt after midnight. Waves 2 to 4 ft. A chance of showers in the evening. .THU THROUGH FRI...W winds 20 to 25 kt with gusts up to 30 kt. Waves 2 to 3 ft. .FRI NIGHT...S winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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