Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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804 FZUS51 KBOX 121706 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 106 PM EDT Sun May 12 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-130600- 106 PM EDT Sun May 12 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Relatively calm winds over the marine zones for Sunday. Seas over the southeastern marine zones remain somewhat elevated in the 4 to 5 foot range but will gradually diminish early next week with high pressure building over the region. Rain chances increase middle of next week as another low pressure system passes to the south. $$ ANZ250-130600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...SW winds around 5 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 1 foot at 8 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SE 2 ft at 10 seconds. .MON...SW winds around 5 kt, becoming S 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and S 2 ft at 3 seconds. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers after midnight. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers in the evening, then showers likely after midnight. .WED AND WED NIGHT...S winds 10 to 15 kt, becoming E. Gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-130600- Massachusetts Bay and Ipswich Bay- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 1 foot at 8 seconds. .TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SE 1 foot at 11 seconds. .MON...SW winds around 5 kt, becoming SE 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 3 seconds. .MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers after midnight. .TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 3 seconds and SE 2 ft at 7 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers in the evening, then showers likely after midnight. .WED AND WED NIGHT...S winds 10 to 15 kt, becoming E. Gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 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. $$ ANZ231-130600- Cape Cod Bay- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...S winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at 3 seconds. .MON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and W 1 foot at 2 seconds. .MON NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 7 seconds. A chance of showers. .WED AND WED NIGHT...S winds 10 to 15 kt, becoming E. Gusts up to 25 kt. Seas 2 to 3 ft. Showers likely. .THU...NE winds around 15 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-130600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 106 PM EDT Sun May 12 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .THIS AFTERNOON...SW winds around 5 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 9 seconds and S 1 foot at 10 seconds. .TONIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds and S 2 ft at 10 seconds. .MON...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 2 ft at 8 seconds. .MON NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and SW 1 foot at 3 seconds. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers after midnight. .WED...S winds around 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. .WED NIGHT...E winds around 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. Showers likely. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. .THU NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 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. $$ ANZ255-130600- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 106 PM EDT Sun May 12 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .THIS AFTERNOON...SW winds around 5 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 2 ft at 9 seconds. .TONIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 2 ft at 9 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and W 2 ft at 4 seconds. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 7 seconds. .TUE...S winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 13 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers after midnight. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Showers likely. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. .THU NIGHT...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-130600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...S winds around 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 9 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 2 ft at 9 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and W 2 ft at 3 seconds. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 13 seconds. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and SE 1 foot at 13 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of showers in the evening, then showers likely after midnight. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...E winds around 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. Showers likely. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. .THU NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 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. $$ ANZ232-130600- Nantucket Sound- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at 2 seconds. .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at 3 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 9 seconds. .MON NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 7 seconds. .TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers. .WED AND WED NIGHT...SE winds around 15 kt, becoming E. Gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-130600- Vineyard Sound- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at 9 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and S 1 foot at 9 seconds. .MON...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and S 1 foot at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TUE...S winds 15 to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SE 1 foot at 13 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of showers in the evening, then showers likely after midnight. .WED AND WED NIGHT...SE winds 15 to 20 kt, becoming E. Gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .THU...NE winds around 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-130600- Buzzards Bay- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at 9 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and S 1 foot at 9 seconds. .MON...SW winds 5 to 10 kt, increasing to 15 to 20 kt in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and S 1 foot at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .TUE...S winds 15 to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of showers in the evening, then showers likely after midnight. .WED AND WED NIGHT...SE winds around 15 kt, becoming E. Gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .THU...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-130600- Rhode Island Sound- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...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. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at 9 seconds. .MON...SW winds 10 to 15 kt. 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...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE...S winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 13 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of showers in the evening, then showers likely after midnight. .WED...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. .THU...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-130600- Block Island Sound- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. A slight chance of showers. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at 2 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 9 seconds. .MON NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. .TUE...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 13 seconds. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of showers in the evening, then showers likely after midnight. .WED AND WED NIGHT...SE winds 10 to 15 kt, becoming NE. Gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. .THU...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-130600- Boston Harbor- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...SE winds 5 to 10 kt. Waves 1 foot or less. .TONIGHT...SW winds around 5 kt. Waves 1 foot or less. .MON...SW winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers after midnight. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers in the evening, then showers likely after midnight. .WED AND WED NIGHT...S winds 15 to 20 kt, becoming NE around 10 kt. Waves 2 to 3 ft. Showers likely. .THU...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .THU NIGHT...N 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. $$ ANZ236-130600- Narragansett Bay- 106 PM EDT Sun May 12 2024 .THIS AFTERNOON...S winds 5 to 10 kt. Waves around 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .MON...SW winds 5 to 10 kt, increasing to 15 to 20 kt in the afternoon. Waves around 2 ft. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers in the evening, then showers likely after midnight. .WED AND WED NIGHT...SE winds around 15 kt, becoming NE. Gusts up to 25 kt. Waves 2 to 4 ft. Showers likely. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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