Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 180201 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1001 PM EDT Sun Mar 17 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-181500- 1001 PM EDT Sun Mar 17 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Scattered showers diminish this evening leading to a much drier start to the week. Weak cold front Tuesday brings the chance for a shower across the waters with renewed shower chances Wednesday and Friday. Winds increasing to near gale force by the end of the week. $$ ANZ250-181500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1001 PM EDT Sun Mar 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .OVERNIGHT...W winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft. .TUE...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED...SW winds around 10 kt. Seas 2 to 3 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. .THU AND THU NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. .FRI AND FRI NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, becoming SW 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-181500- Massachusetts Bay and Ipswich Bay- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...W winds 5 to 10 kt. Gusts up to 20 kt. Seas 2 to 3 ft. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .MON NIGHT...W winds 15 to 20 kt. Seas around 2 ft. .TUE...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. .THU THROUGH FRI...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .FRI NIGHT...W winds around 10 kt with gusts up to 20 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. $$ ANZ231-181500- Cape Cod Bay- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. .TUE NIGHT AND WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft. .THU THROUGH FRI...W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-181500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1001 PM EDT Sun Mar 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT... .OVERNIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 4 ft. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .TUE...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. .TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 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 4 ft. .WED NIGHT...W winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. .THU...W winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 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. $$ ANZ255-181500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1001 PM EDT Sun Mar 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT... .OVERNIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 3 to 5 ft. .MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE NIGHT AND WED...SW winds 20 to 25 kt. Seas 3 to 5 ft. .WED NIGHT...W winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. .THU...W winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-181500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1001 PM EDT Sun Mar 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT... .OVERNIGHT...NW winds 5 to 10 kt. Seas 4 to 5 ft. .MON...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 4 to 5 ft. .MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE NIGHT AND WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .WED NIGHT...W winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. .THU...W winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 15 to 20 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. $$ ANZ232-181500- Nantucket Sound- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT AND WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .THU AND THU NIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt. Gusts up to 35 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-181500- Vineyard Sound- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...NW winds around 5 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT AND 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 with gusts up to 30 kt. Seas 2 to 4 ft. .THU AND THU NIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt. 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. $$ ANZ234-181500- Buzzards Bay- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...NW winds around 5 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT AND WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .THU AND THU NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-181500- Rhode Island Sound- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...NW winds around 5 kt. Seas 3 to 4 ft. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .MON NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. .TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. .TUE NIGHT AND 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 with gusts up to 30 kt. Seas 3 to 5 ft. .THU AND THU NIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt. Gusts up to 30 kt. Seas 3 to 5 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. $$ ANZ237-181500- Block Island Sound- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...NW winds around 5 kt. Seas 2 to 3 ft. .MON...NW winds 5 to 10 kt, becoming W 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE...W winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE NIGHT AND WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-181500- Boston Harbor- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...W winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE...W winds 15 to 20 kt. Waves around 2 ft. .TUE NIGHT THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. .THU THROUGH FRI...W winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft. .FRI NIGHT...W winds 5 to 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. $$ ANZ236-181500- Narragansett Bay- 1001 PM EDT Sun Mar 17 2024 .OVERNIGHT...NW winds around 5 kt. Waves 2 to 3 ft. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .MON NIGHT...W winds 10 to 15 kt. Waves 2 to 3 ft. .TUE...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Waves 2 to 3 ft. .TUE NIGHT THROUGH WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. .THU AND THU NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 4 ft. .FRI...W winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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