Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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072 FZUS51 KBOX 251104 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 704 AM EDT Wed Sep 25 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-260000- 704 AM EDT Wed Sep 25 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure will keep E onshore flow today. Low pressure will bring showers with embedded Thur. High pres builds back in for Fri into the weekend. $$ ANZ250-260000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 704 AM EDT Wed Sep 25 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...E winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 10 seconds. .TONIGHT...SE winds around 10 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 12 seconds. .THU...SE winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: E 6 ft at 12 seconds and S 2 ft at 4 seconds. .THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW after midnight. Seas 4 to 6 ft. Wave Detail: E 6 ft at 11 seconds and S 2 ft at 4 seconds. Showers likely, mainly in the evening. Vsby 1 to 3 NM. .FRI AND FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 11 seconds and N 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 10 seconds and N 2 ft at 4 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-260000- Massachusetts Bay and Ipswich Bay- 704 AM EDT Wed Sep 25 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...E winds around 10 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 10 seconds. .TONIGHT...SE winds around 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 11 seconds. .THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 12 seconds and SE 2 ft at 3 seconds. .THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight. Seas 3 to 5 ft. Wave Detail: E 5 ft at 11 seconds and S 2 ft at 4 seconds. Showers likely, mainly in the evening. Vsby 1 to 3 NM. .FRI AND FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and N 1 foot at 2 seconds. .SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 3 seconds. 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. $$ ANZ231-260000- Cape Cod Bay- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and E 1 foot at 3 seconds. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and E 1 foot at 2 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SE 2 ft at 3 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SE 2 ft at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .FRI...NW winds around 10 kt, becoming N in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and W 1 foot at 2 seconds. A chance of showers in the morning. .FRI NIGHT...SE winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and N 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-260000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 704 AM EDT Wed Sep 25 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...E winds 10 to 15 kt. Gusts up to 20 kt this morning. Seas 5 to 7 ft. Wave Detail: E 6 ft at 10 seconds. .TONIGHT...E winds 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 12 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: E 7 ft at 12 seconds and S 1 foot at 3 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 4 to 6 ft. Wave Detail: E 6 ft at 11 seconds and S 1 foot at 4 seconds. A chance of showers. Vsby 1 to 3 NM. .FRI...NW winds around 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 11 seconds and SW 1 foot at 4 seconds. A chance of showers in the morning. .FRI NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and SW 1 foot at 4 seconds. .SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 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. $$ ANZ255-260000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 704 AM EDT Wed Sep 25 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...E winds 10 to 15 kt. Gusts up to 20 kt this morning. Seas 4 to 6 ft. Wave Detail: E 5 ft at 10 seconds and E 1 foot at 3 seconds. .TONIGHT...E winds around 10 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 11 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: E 6 ft at 12 seconds and S 1 foot at 4 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: E 5 ft at 11 seconds and S 2 ft at 4 seconds. A chance of showers. .FRI...W winds around 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 11 seconds and SW 2 ft at 4 seconds. A chance of showers in the morning. .FRI NIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 10 seconds and SW 1 foot at 4 seconds. .SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-260000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 704 AM EDT Wed Sep 25 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING... .TODAY...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds. .TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: E 5 ft at 12 seconds and S 1 foot at 4 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: E 5 ft at 12 seconds and S 3 ft at 4 seconds. A chance of showers. .FRI...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 11 seconds and SW 2 ft at 4 seconds. A chance of showers in the morning. .FRI NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and SW 1 foot at 4 seconds. .SAT THROUGH SUN NIGHT...NE winds 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. $$ ANZ232-260000- Nantucket Sound- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 10 seconds and E 2 ft at 3 seconds. .TONIGHT...E winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 11 seconds and E 1 foot at 3 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: E 3 ft at 12 seconds and SE 2 ft at 3 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: E 3 ft at 12 seconds and S 2 ft at 4 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM. .FRI...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and SW 2 ft at 3 seconds. A chance of showers in the morning. .FRI NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and N 1 foot at 2 seconds. .SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-260000- Vineyard Sound- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and SE 1 foot at 3 seconds. .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and E 1 foot at 2 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and SE 2 ft at 11 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 11 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM. .FRI...W winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 11 seconds, becoming SW 1 foot at 4 seconds and E 1 foot at 10 seconds. A chance of showers in the morning. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 1 foot or less. Wave Detail: N 1 foot at 2 seconds and SW 1 foot at 4 seconds. .SAT THROUGH SUN NIGHT...NE winds 10 to 15 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. $$ ANZ234-260000- Buzzards Bay- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 10 seconds and E 1 foot at 2 seconds. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 11 seconds and E 1 foot at 2 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and SE 2 ft at 3 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 12 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM. .FRI...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and W 1 foot at 4 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: E 2 ft at 10 seconds and SW 1 foot at 4 seconds, becoming N 1 foot at 2 seconds and W 1 foot at 4 seconds. .SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-260000- Rhode Island Sound- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 10 seconds and E 1 foot at 3 seconds. .TONIGHT...SE winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 10 seconds and E 1 foot at 3 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 3 ft at 12 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 12 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM. .FRI...NW winds around 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and SW 2 ft at 5 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 11 seconds and N 1 foot at 2 seconds. .SAT THROUGH SUN NIGHT...NE winds 10 to 15 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. $$ ANZ237-260000- Block Island Sound- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and NE 1 foot at 3 seconds. .TONIGHT...E winds 10 to 15 kt. Seas around 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 1 foot at 3 seconds. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 3 ft. Wave Detail: SE 3 ft at 12 seconds and S 2 ft at 4 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 12 seconds and S 2 ft at 4 seconds. A chance of showers. .FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 11 seconds and SW 1 foot at 4 seconds. .FRI NIGHT...W winds around 5 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 11 seconds and SW 1 foot at 4 seconds. .SAT THROUGH SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-260000- Boston Harbor- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds around 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .TONIGHT...SE winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. At the outer harbor entrance, waves 2 to 4 ft. Showers likely, mainly in the evening with vsby 1 to 3 NM. .FRI AND FRI NIGHT...N winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .SAT THROUGH SUN NIGHT...N 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. $$ ANZ236-260000- Narragansett Bay- 704 AM EDT Wed Sep 25 2024 .TODAY...E winds 5 to 10 kt. Waves 2 to 3 ft. .TONIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. .THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM in the evening. .FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Waves 2 to 3 ft. .FRI NIGHT...W winds around 5 kt, becoming N after midnight. Waves around 2 ft. .SAT THROUGH SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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