Coastal Waters Forecast
Issued by NWS Boston, MA

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147 FZUS51 KBOX 030205 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1005 PM EDT Thu May 2 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-031500- 1005 PM EDT Thu May 2 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pres moves south from the south coastal waters tonight. High pres over the Maritimes will build south into New England Fri and Sat, then head to Nova Scotia Sun. A weak front will move into the region Mon. A warm front approaches from the SW on Tue. $$ ANZ250-031500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 4 seconds. Patchy fog. Vsby 1 NM or less. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 1 ft at 6 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...S winds around 5 kt, becoming NW around 5 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 1 ft at 9 seconds. .SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and E 1 ft at 9 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and E 1 ft at 10 seconds. .SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 ft at 10 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Showers likely. .MON...SW winds around 10 kt. Seas 3 to 4 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-031500- Massachusetts Bay and Ipswich Bay- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...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 ft at 3 seconds. Patchy fog. Vsby 1 NM or less. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and E 1 ft at 10 seconds. .FRI NIGHT...SE winds around 5 kt, becoming W around 5 kt after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and E 1 ft at 9 seconds. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and E 1 ft at 9 seconds. A chance of. .SAT NIGHT AND SUN...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and SE 1 ft at 3 seconds. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and SE 2 ft at 5 seconds. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...SE 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. $$ ANZ231-031500- Cape Cod Bay- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 ft at 3 seconds. Patchy fog. Vsby 1 NM or less. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and E 1 ft at 10 seconds. Patchy fog in the morning. .FRI NIGHT...NE winds around 5 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 4 seconds and E 1 ft at 9 seconds. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 4 seconds and E 1 ft at 9 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds and E 1 ft at 10 seconds. .SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 1 ft at 3 seconds and E 1 ft at 10 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds around 10 kt. Seas around 2 ft. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-031500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ft at 6 seconds. Patchy fog. Scattered showers. Vsby 1 NM or less. .FRI...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 1 ft at 6 seconds. Areas of fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 ft at 5 seconds. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and SW 1 ft at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 3 ft. Wave Detail: NE 3 ft at 6 seconds and E 1 ft at 11 seconds. .SUN AND SUN NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and E 3 ft at 6 seconds. A chance of showers. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds around 10 kt. Seas 2 to 4 ft. A chance of. 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. $$ ANZ255-031500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds around 10 kt, becoming NE 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 2 ft at 6 seconds. Patchy fog. Vsby 1 NM or less. .FRI...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 2 ft at 6 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 ft at 5 seconds. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 1 ft at 10 seconds. .SUN AND SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and E 3 ft at 11 seconds. A chance of showers. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-031500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 2 ft at 6 seconds. Patchy fog. Vsby 1 NM or less. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 2 ft at 5 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and SW 1 ft at 5 seconds. .SAT NIGHT AND SUN...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and E 1 ft at 8 seconds. A chance of showers. A chance of. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 ft at 10 seconds. Showers likely, mainly in the evening. .MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S 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. $$ ANZ232-031500- Nantucket Sound- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds around 10 kt, becoming NE 15 to 20 kt. Seas 1 foot or less, then around 2 ft. Wave Detail: E 1 ft at 4 seconds and W 1 ft at 4 seconds, becoming NE 2 ft at 4 seconds and SW 1 ft at 5 seconds. Patchy fog. Scattered showers. Vsby 1 NM or less. .FRI...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 5 seconds. Patchy fog in the morning. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and SW 1 ft at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and E 1 ft at 10 seconds. .SUN AND SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 ft at 10 seconds. A chance of showers. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds 10 to 15 kt. Seas around 2 ft. A chance of. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-031500- Vineyard Sound- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 ft at 5 seconds. Patchy fog. Vsby 1 to 3 NM. .FRI...NE winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 ft at 5 seconds. .FRI NIGHT...NE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at 5 seconds, becoming E 1 ft at 3 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 1 foot or less. Wave Detail: E 1 ft at 3 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 1 ft at 4 seconds and E 1 ft at 10 seconds. A chance of showers. .MON...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S 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. $$ ANZ234-031500- Buzzards Bay- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt. Gusts up to 25 kt. Seas 1 foot or less, then around 2 ft. Wave Detail: E 1 ft at 4 seconds and W 1 ft at 4 seconds, becoming NE 2 ft at 3 seconds and SW 1 ft at 5 seconds. Patchy fog. Vsby 1 to 3 NM. .FRI...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: NE 2 ft at 3 seconds and SW 1 ft at 5 seconds, becoming NE 1 ft at 3 seconds and S 1 ft at 5 seconds. .FRI NIGHT...NE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: NE 1 ft at 2 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 1 foot or less. Wave Detail: E 1 ft at 3 seconds and E 1 ft at 9 seconds. .SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: SE 1 ft at 4 seconds and E 1 ft at 10 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds 10 to 15 kt. Seas 1 foot or less. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Seas 1 foot or less. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-031500- Rhode Island Sound- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 2 ft at 6 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt, diminishing to around 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 1 ft at 6 seconds. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 ft at 5 seconds and NE 1 ft at 5 seconds, becoming E 2 ft at 3 seconds and E 1 ft at 9 seconds. .SAT NIGHT AND SUN...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and SE 2 ft at 7 seconds. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 11 seconds. Showers likely, mainly in the evening. .MON...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S 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. $$ ANZ237-031500- Block Island Sound- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds around 10 kt, becoming NE 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and SW 2 ft at 6 seconds. Patchy fog. Vsby 1 to 3 NM. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 5 seconds. .FRI NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and S 1 ft at 5 seconds. .SAT...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 ft at 5 seconds and E 1 ft at 5 seconds, becoming E 2 ft at 4 seconds and SE 1 ft at 11 seconds. A chance of. .SAT NIGHT AND SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 ft at 11 seconds. A chance of showers. .SUN NIGHT...SE winds around 10 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 10 seconds. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-031500- Boston Harbor- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. .FRI NIGHT...SE winds around 5 kt, becoming W around 5 kt after midnight. Waves 1 foot or less. .SAT...E winds 10 to 15 kt. Waves around 2 ft. A chance of. .SAT NIGHT AND SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...SE 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. $$ ANZ236-031500- Narragansett Bay- 1005 PM EDT Thu May 2 2024 .OVERNIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .FRI...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves around 2 ft. .FRI NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Waves 1 foot or less. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Waves 1 foot or less. A chance of. .SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. .SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt. Waves around 2 ft. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Waves around 2 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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