FZUS51 KBOX 112003 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 403 PM EDT Sun Aug 11 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-120900- 403 PM EDT Sun Aug 11 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure establishes itself over the waters bringing nice boating weather for mariners this evening. A weak cold frontal passage then takes place on Monday, which could bring showers later in the day to the waters, but high pressure building back in brings a return to tranquil conditions for the waters through late in the week. $$ ANZ250-120900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 403 PM EDT Sun Aug 11 2024 .TONIGHT...SW winds around 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at 3 seconds. .MON...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .MON NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and SE 2 ft at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and SE 2 ft at 8 seconds. .TUE NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .WED AND WED NIGHT...N winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 10 seconds and NW 1 foot at 2 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-120900- Massachusetts Bay and Ipswich Bay- 403 PM EDT Sun Aug 11 2024 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 2 seconds. .MON...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 9 seconds. .MON NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 10 seconds. .TUE...NW winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 9 seconds. .TUE NIGHT...S winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at 8 seconds. .WED AND WED NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at 8 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. 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. $$ ANZ231-120900- Cape Cod Bay- 403 PM EDT Sun Aug 11 2024 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 2 seconds. .MON...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 8 seconds. .MON NIGHT...W winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 8 seconds, becoming NW 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming N in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TUE NIGHT...SW winds around 5 kt, becoming W after midnight. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 7 seconds. .WED AND WED NIGHT...N winds around 5 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 6 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-120900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 403 PM EDT Sun Aug 11 2024 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and W 1 foot at 2 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and W 2 ft at 3 seconds. .MON NIGHT...W winds 10 to 15 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and W 2 ft at 4 seconds. .TUE...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and S 2 ft at 8 seconds. .TUE NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and W 1 foot at 4 seconds. .WED AND WED NIGHT...N winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...S 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. $$ ANZ255-120900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 403 PM EDT Sun Aug 11 2024 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds. .MON...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and W 2 ft at 3 seconds. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and S 2 ft at 7 seconds. .TUE NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 4 seconds. .WED AND WED NIGHT...NE winds around 5 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and W 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-120900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 403 PM EDT Sun Aug 11 2024 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and W 1 foot at 2 seconds. .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. Wave Detail: SE 3 ft at 8 seconds and W 2 ft at 4 seconds. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and S 2 ft at 8 seconds. .TUE NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .WED AND WED NIGHT...N winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and W 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...S 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. $$ ANZ232-120900- Nantucket Sound- 403 PM EDT Sun Aug 11 2024 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at 8 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and S 1 foot at 8 seconds. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 8 seconds, becoming W 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TUE NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. .WED AND WED NIGHT...N winds around 5 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 8 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-120900- Vineyard Sound- 403 PM EDT Sun Aug 11 2024 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .MON NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 7 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 1 foot at 4 seconds and S 1 foot at 7 seconds. .TUE NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and S 1 foot at 7 seconds. .WED AND WED NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and S 1 foot at 7 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. 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. $$ ANZ234-120900- Buzzards Bay- 403 PM EDT Sun Aug 11 2024 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: W 1 foot at 3 seconds and S 1 foot at 7 seconds, becoming SW 2 ft at 3 seconds and S 1 foot at 7 seconds. .MON NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds, becoming W 1 foot at 4 seconds and S 1 foot at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 4 seconds and S 1 foot at 7 seconds. .TUE NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and S 1 foot at 7 seconds. .WED AND WED NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 7 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-120900- Rhode Island Sound- 403 PM EDT Sun Aug 11 2024 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and W 1 foot at 2 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. .MON NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and S 2 ft at 8 seconds. .TUE NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. .WED AND WED NIGHT...N winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...S 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. $$ ANZ237-120900- Block Island Sound- 403 PM EDT Sun Aug 11 2024 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and W 1 foot at 2 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 8 seconds. .MON NIGHT...NW winds around 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and W 1 foot at 3 seconds. .WED AND WED NIGHT...N winds around 5 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 8 seconds. .THU THROUGH FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-120900- Boston Harbor- 403 PM EDT Sun Aug 11 2024 .TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .MON...W winds 5 to 10 kt. Waves 1 foot or less. .MON NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .TUE...NW winds 5 to 10 kt, becoming N in the afternoon. Waves 1 foot or less. .TUE NIGHT...S winds around 5 kt, becoming NW after midnight. Waves 1 foot or less. .WED AND WED NIGHT...NW winds around 5 kt. Waves 1 foot or less. .THU THROUGH FRI NIGHT...S 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. $$ ANZ236-120900- Narragansett Bay- 403 PM EDT Sun Aug 11 2024 .TONIGHT...W winds 5 to 10 kt. Waves around 2 ft. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Waves around 2 ft. .MON NIGHT...NW winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft. .WED AND WED NIGHT...NW winds around 5 kt. Waves 1 foot or less. .THU THROUGH FRI NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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