Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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248 FZUS51 KBOX 010205 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1005 PM EDT Tue Apr 30 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-011500- 1005 PM EDT Tue Apr 30 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak low pres tracks across the south coastal waters tonight followed by high pres Wed into Wed night. A frontal system moves into New Eng and the waters Thu, then high pres over the Maritimes builds S over the eastern waters Fri and Sat with NE flow developing. The high pres moves to Nova Scotia Sun with moist easterly flow continuing. $$ ANZ250-011500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft at 9 seconds. A chance of showers, then showers likely. .WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at 10 seconds. Showers likely in the morning. .WED NIGHT...E winds around 5 kt, becoming S around 5 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 11 seconds. .THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 ft at 11 seconds. A chance of showers. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 ft at 10 seconds. .SAT AND SAT NIGHT...NE winds around 10 kt, becoming E. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-011500- Massachusetts Bay and Ipswich Bay- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 9 seconds. A chance of showers, then showers likely. .WED...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at 10 seconds. A chance of showers in the morning. .WED NIGHT...E winds around 5 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and S 1 ft at 6 seconds. .THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 11 seconds. A chance of showers. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 ft at 10 seconds. .SAT AND SAT NIGHT...NE winds around 10 kt, becoming E. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...SE winds 10 to 15 kt, becoming S. 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. $$ ANZ231-011500- Cape Cod Bay- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 1 ft at 4 seconds and E 1 ft at 9 seconds. A slight chance of showers. .WED...NE winds around 10 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at 5 seconds. A chance of showers in the morning. .WED NIGHT...NE winds around 5 kt, becoming SE around 5 kt after midnight. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds and S 1 ft at 6 seconds. .THU...S winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: E 1 ft at 4 seconds and S 1 ft at 6 seconds, becoming SE 1 ft at 3 seconds and E 1 ft at 10 seconds. A chance of showers. .THU NIGHT THROUGH FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 1 ft at 3 seconds and N 1 ft at 3 seconds. .SAT AND SAT NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...SE winds around 10 kt, becoming S. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-011500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 10 to 15 kt. Gusts up to 20 kt. Seas around 3 ft. Wave Detail: SE 2 ft at 5 seconds and E 2 ft at 9 seconds. A slight chance of showers. Patchy fog with vsby 1 NM or less. .WED...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 3 ft. Wave Detail: NE 3 ft at 5 seconds and E 3 ft at 10 seconds. Patchy fog in the morning. A chance of showers in the morning with vsby 1 NM or less. .WED NIGHT...NE winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and S 2 ft at 6 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .THU...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and S 2 ft at 6 seconds. A chance of showers. Patchy fog in the morning with vsby 1 NM or less. .THU NIGHT...SE winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and E 1 ft at 5 seconds. A chance of showers in the evening. .FRI AND FRI NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ft at 6 seconds. .SAT AND SAT NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. .SUN AND SUN NIGHT...SE winds 10 to 15 kt. Seas 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. $$ ANZ255-011500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 2 ft at 9 seconds. Patchy dense fog. Vsby 1 NM or less. .WED...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 3 ft at 6 seconds. Patchy fog in the morning. A chance of showers in the morning with vsby 1 NM or less. .WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and SW 3 ft at 7 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and S 2 ft at 6 seconds. A chance of showers in the afternoon. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 2 ft at 6 seconds. .SAT AND SAT NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-011500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 2 ft at 10 seconds. Patchy fog. Vsby 1 NM or less. .WED...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and E 2 ft at 5 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 2 ft at 5 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and S 2 ft at 6 seconds. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 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 6 seconds. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 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. $$ ANZ232-011500- Nantucket Sound- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 10 seconds. Patchy fog with vsby 1 NM or less. .WED...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and S 1 ft at 6 seconds. Patchy fog in the morning. A chance of showers in the morning with vsby 1 to 3 NM. .WED NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and SW 1 ft at 6 seconds. .THU...S winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: E 1 ft at 5 seconds and S 1 ft at 6 seconds, becoming S 1 ft at 3 seconds and E 1 ft at 5 seconds. A chance of showers. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 ft at 5 seconds. .SAT AND SAT NIGHT...NE winds 10 to 15 kt. Seas 1 foot or less. Wave Detail: NE 1 ft at 4 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-011500- Vineyard Sound- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds and S 1 ft at 5 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .WED...NE winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and NE 1 ft at 3 seconds. A chance of showers in the morning. .WED NIGHT...NE winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and NE 1 ft at 3 seconds. .THU...S winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: E 1 ft at 5 seconds and S 1 ft at 6 seconds, becoming S 1 ft at 4 seconds and E 1 ft at 5 seconds. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and SW 1 ft at 5 seconds. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Seas 1 foot or less. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at 5 seconds. .SUN AND SUN NIGHT...SE winds around 10 kt. Seas 1 foot or less, then 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. $$ ANZ234-011500- Buzzards Bay- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 2 seconds and S 1 ft at 5 seconds. Patchy fog. A slight chance of showers. Vsby 1 to 3 NM, decreasing to 1 NM or less. .WED...NE winds around 10 kt. Seas around 2 ft. Wave Detail: NE 1 ft at 2 seconds and S 1 ft at 6 seconds. A chance of showers in the morning. .WED NIGHT...NE winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. Wave Detail: NE 1 ft at 3 seconds and SW 1 ft at 6 seconds. .THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: E 1 ft at 5 seconds and S 1 ft at 6 seconds, becoming SW 1 ft at 3 seconds and E 1 ft at 5 seconds. A chance of showers in the morning. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and SW 1 ft at 4 seconds. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 ft at 2 seconds and S 1 ft at 5 seconds. .SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-011500- Rhode Island Sound- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...NE winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 10 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .WED...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ft at 6 seconds. Patchy fog in the morning. A chance of showers in the morning with vsby 1 to 3 NM. .WED NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and S 2 ft at 7 seconds. .THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 ft at 11 seconds. .THU NIGHT THROUGH FRI NIGHT...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 2 ft at 6 seconds. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Seas 1 foot or less, then around 2 ft. Wave Detail: NE 1 ft at 4 seconds and S 1 ft at 5 seconds, becoming E 2 ft at 4 seconds and E 1 ft at 9 seconds. .SUN AND SUN NIGHT...SE winds 10 to 15 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. $$ ANZ237-011500- Block Island Sound- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 10 seconds. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and S 2 ft at 6 seconds. Patchy fog in the morning. A chance of showers in the morning with vsby 1 to 3 NM. .WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 ft at 10 seconds. .THU...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 ft at 10 seconds. .THU NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and W 1 ft at 3 seconds. .FRI AND FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at 5 seconds. .SAT...E winds around 10 kt. Seas around 2 ft. .SAT NIGHT THROUGH SUN NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-011500- Boston Harbor- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers, then showers likely. .WED...NE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers in the morning. .WED NIGHT...E winds around 5 kt, becoming S after midnight. Waves 1 foot or less. .THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of showers. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt. Waves around 2 ft. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Waves around 2 ft. .SUN AND SUN NIGHT...SE winds 5 to 10 kt, becoming S. 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. $$ ANZ236-011500- Narragansett Bay- 1005 PM EDT Tue Apr 30 2024 .OVERNIGHT...NE winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A slight chance of showers, then a chance of showers. Vsby 1 to 3 NM, decreasing to 1 NM or less. .WED...NE winds 5 to 10 kt. Waves around 2 ft. Showers likely in the morning. .WED NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Waves around 2 ft. .THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves around 2 ft. .THU NIGHT THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft. .SUN AND SUN NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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