Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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398 FZUS51 KBOX 111105 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 704 AM EDT Sat May 11 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-120000- 704 AM EDT Sat May 11 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pressure tracks well southeast of New England Saturday. Some easterly swells may impact the MA/RI waters Sat night into Sunday. Otherwise, weak high pressure remains over the waters this weekend. The high then strengthens Monday and slides south of New England. This results in strengthening SSW winds early next week, along with the risk for widespread showers Tuesday night into Wednesday. $$ ANZ250-120000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 7 seconds and SE 1 foot at 15 seconds. .TONIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and SE 1 foot at 9 seconds. .SUN...N winds around 5 kt, becoming E in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 1 foot at 8 seconds. .SUN NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SE 1 foot at 10 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 3 ft at 4 seconds. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. A chance of showers. .TUE NIGHT AND WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-120000- Massachusetts Bay and Ipswich Bay- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and E 1 foot at 15 seconds. .TONIGHT...E winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and E 1 foot at 15 seconds. .SUN...N winds around 5 kt, becoming SE in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 1 foot at 8 seconds. .SUN NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SE 1 foot at 9 seconds. .MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at 9 seconds. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers. .TUE NIGHT AND WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers likely. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ231-120000- Cape Cod Bay- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and S 1 foot at 8 seconds. .TONIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 8 seconds. .SUN...NE winds around 5 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and S 1 foot at 8 seconds. .SUN NIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SE 1 foot at 9 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. .TUE NIGHT AND WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-120000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 704 AM EDT Sat May 11 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 6 seconds and S 2 ft at 9 seconds. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds and S 2 ft at 9 seconds. .SUN...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds and S 1 foot at 8 seconds. .SUN NIGHT...NW winds around 5 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds and S 2 ft at 10 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SW 2 ft at 3 seconds. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 3 ft at 7 seconds. .TUE NIGHT THROUGH WED NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of showers. 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. $$ ANZ255-120000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 704 AM EDT Sat May 11 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .TODAY...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 9 seconds. .TONIGHT...NE winds 15 to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 7 seconds and S 2 ft at 8 seconds. .SUN...E winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at 9 seconds. .SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 2 ft at 9 seconds. .MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 9 seconds. .TUE...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SE 1 foot at 13 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .WED...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers likely. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-120000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 9 seconds. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 6 seconds and S 2 ft at 8 seconds. .SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 1 foot at 8 seconds. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 1 foot at 9 seconds. .MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 9 seconds. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 8 seconds. .TUE NIGHT AND WED...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers likely. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. 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. $$ ANZ232-120000- Nantucket Sound- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 1 foot at 9 seconds. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and S 1 foot at 8 seconds. .SUN...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 8 seconds. .SUN NIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and W 1 foot at 2 seconds. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 9 seconds. .TUE...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. A chance of showers. .WED...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Showers likely. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-120000- Vineyard Sound- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 9 seconds. .TONIGHT...NE winds 10 to 15 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 8 seconds. .SUN...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 5 seconds. .SUN NIGHT...W 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. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 8 seconds. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. .TUE NIGHT AND WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. 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. $$ ANZ234-120000- Buzzards Bay- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 9 seconds. .TONIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 8 seconds. .SUN...NE winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 7 seconds. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at 9 seconds. .MON AND MON NIGHT...SW winds 15 to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 8 seconds. .TUE...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE NIGHT AND WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-120000- Rhode Island Sound- 704 AM EDT Sat May 11 2024 .TODAY...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 2 ft at 9 seconds. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 2 ft at 8 seconds. .SUN...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 8 seconds. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and E 2 ft at 9 seconds. .MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. .TUE NIGHT AND WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of showers. 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. $$ ANZ237-120000- Block Island Sound- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and S 2 ft at 9 seconds. .TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and S 2 ft at 8 seconds. .SUN...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 8 seconds. .SUN NIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and S 1 foot at 9 seconds. .MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers. .TUE NIGHT AND WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-120000- Boston Harbor- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt. Waves around 2 ft. .TONIGHT...E winds 5 to 10 kt, becoming S after midnight. Waves 1 foot or less. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .SUN NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less. .MON AND MON NIGHT...S winds 15 to 20 kt. Waves around 2 ft. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers. .TUE NIGHT AND WED...S winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Showers likely. .WED NIGHT...N winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-120000- Narragansett Bay- 704 AM EDT Sat May 11 2024 .TODAY...NE winds 10 to 15 kt. Gusts up to 20 kt this morning. Waves 2 to 3 ft. .TONIGHT...E winds 5 to 10 kt, becoming NE after midnight. Waves 2 to 3 ft. .SUN...E winds 5 to 10 kt, becoming S in the afternoon. Waves around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers. .TUE NIGHT AND WED...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. Showers likely. .WED NIGHT...N winds around 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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