Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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034 FZUS51 KBOX 280204 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1004 PM EDT Sat Apr 27 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-281500- 1004 PM EDT Sat Apr 27 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres south of New Eng will drift further SE through tonight. A warm front will move across southern New Eng and the coastal waters tonight into Sunday. A cold front will drop south across the waters Monday and stall to the west through Tue. Low pres may track south of New Eng Tue night into Wed, then high pres will follow for Thu. $$ ANZ250-281500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 9 seconds. .SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 10 seconds. .SUN NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 10 seconds. .MON...N winds around 10 kt, becoming NE in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at 10 seconds. .MON NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and N 2 ft at 4 seconds. .TUE...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and NE 2 ft at 4 seconds. .TUE NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .WED...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-281500- Massachusetts Bay and Ipswich Bay- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 9 seconds. A slight chance of showers. .SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 10 seconds. .SUN NIGHT...S winds around 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 10 seconds. .MON...N winds around 10 kt, becoming NE in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and NW 2 ft at 3 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 11 seconds. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 4 seconds. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of showers. .WED...E winds around 10 kt. Seas around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...S winds 5 to 10 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. $$ ANZ231-281500- Cape Cod Bay- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft at 2 seconds and E 1 ft at 5 seconds. A chance of showers. .SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Wave Detail: SW 1 ft at 2 seconds and E 1 ft at 6 seconds. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and S 1 ft at 3 seconds. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and NW 1 ft at 3 seconds. .MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and N 1 ft at 3 seconds. .TUE...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and NE 1 ft at 3 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .WED...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-281500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 ft at 3 seconds. .SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 10 seconds. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and SW 2 ft at 3 seconds. .MON...NW winds 5 to 10 kt, becoming N in the afternoon. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 10 seconds and W 2 ft at 4 seconds. .MON NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 11 seconds and SW 2 ft at 6 seconds. .TUE...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 4 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 3 to 4 ft. A chance of showers after midnight. .WED...E winds around 10 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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. $$ ANZ255-281500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 9 seconds. .MON...NW winds 10 to 15 kt, becoming N in the afternoon. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 3 ft at 10 seconds. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 11 seconds and SW 2 ft at 6 seconds. .TUE...E winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 3 seconds. .TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers after midnight. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-281500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. Showers likely. .SUN...SW 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 E 2 ft at 9 seconds. A chance of showers in the morning. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 9 seconds. .MON...NW winds around 10 kt, becoming N in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 10 seconds. .MON NIGHT AND TUE...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 6 seconds. .TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft at 10 seconds. A chance of showers after midnight. .WED...NE winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW 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. $$ ANZ232-281500- Nantucket Sound- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft at 3 seconds and E 1 ft at 7 seconds. A chance of showers. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 ft at 7 seconds. A chance of showers in the morning. .SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 ft at 10 seconds. .MON...NW winds 5 to 10 kt, becoming N in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and E 1 ft at 10 seconds. .MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and NE 1 ft at 3 seconds. .TUE...NE winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 10 seconds and NE 1 ft at 3 seconds. .TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers after midnight. .WED...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-281500- Vineyard Sound- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft at 4 seconds and E 1 ft at 7 seconds. A chance of showers. .SUN...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 SE 1 ft at 9 seconds. A chance of showers in the morning. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 9 seconds. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: NE 1 ft at 2 seconds and W 1 ft at 4 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and NE 1 ft at 2 seconds. .TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 3 seconds and SW 1 ft at 6 seconds. .TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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. $$ ANZ234-281500- Buzzards Bay- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft at 3 seconds and E 1 ft at 7 seconds. A chance of showers. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 ft at 5 seconds. A chance of showers in the morning. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft at 4 seconds and SE 1 ft at 9 seconds. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 2 seconds and W 1 ft at 4 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: NE 1 ft at 2 seconds and SW 1 ft at 5 seconds. .TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 2 seconds and SW 1 ft at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .WED...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-281500- Rhode Island Sound- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 ft at 8 seconds. Showers likely. .SUN...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 SE 2 ft at 9 seconds. A chance of showers in the morning. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and NE 1 ft at 2 seconds. .MON NIGHT AND TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 6 seconds. .TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and SE 1 ft at 10 seconds. A chance of showers. .WED...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 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. $$ ANZ237-281500- Block Island Sound- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 ft at 3 seconds. A chance of showers, then showers likely. .SUN...SW winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers in the morning. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog after midnight with vsby 1 NM or less. .MON...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and E 2 ft at 9 seconds. .MON NIGHT AND TUE...E winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 6 seconds. .TUE NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 10 seconds. A chance of showers after midnight. .WED...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-281500- Boston Harbor- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SUN...SW winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...SW winds around 10 kt, becoming W after midnight. Waves 1 foot or less. .MON...N winds 10 to 15 kt, becoming NE in the afternoon. Waves around 2 ft. .MON NIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 2 ft. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. A chance of showers. .WED...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 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. $$ ANZ236-281500- Narragansett Bay- 1004 PM EDT Sat Apr 27 2024 .OVERNIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Showers likely. .SUN...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers in the morning. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Waves around 2 ft in the evening, then 1 foot or less. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Waves 1 foot or less. .MON NIGHT...SE winds 5 to 10 kt, becoming NE after midnight. Waves 1 foot or less. .TUE...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 foot or less. .TUE NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 foot or less, then around 2 ft after midnight. A chance of showers. .WED...NE winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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