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Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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483 FZUS51 KBOX 140204 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1003 PM EDT Sat Jul 13 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-141500- 1003 PM EDT Sat Jul 13 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Rain and isolated thunderstorms will wrap up this evening before moving seaward of the waters. Dry with southwest flow through early next week with the chance for an isolated shower or thunderstorm late Monday or late Wednesday. Marine fog/stratus possible each evening. $$ ANZ250-141500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .SUN...NW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds. Patchy fog in the morning. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 2 seconds. .MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 3 seconds. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers. .WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-141500- Massachusetts Bay and Ipswich Bay- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 to 3 NM. .SUN...NW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 9 seconds. .SUN NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and S 1 foot at 2 seconds. .MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 2 seconds, becoming S 1 foot at 3 seconds and SE 1 foot at 8 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and S 1 foot at 3 seconds. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers. .WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt. Seas around 2 ft, then 1 foot or less. Showers likely. Vsby 1 to 3 NM. .THU NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. 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. $$ ANZ231-141500- Cape Cod Bay- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .SUN...NW winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and SE 1 foot at 7 seconds. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 8 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt. Seas 2 to 3 ft. Showers likely. .THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-141500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SUN...SW winds around 5 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 1 foot at 3 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 4 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 4 seconds. .WED NIGHT AND THU...SW winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas 3 to 5 ft. Showers likely. .THU NIGHT...W winds 5 to 10 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. $$ ANZ255-141500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. Patchy fog. A slight chance of showers. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SUN...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds. .MON...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 4 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely with scattered tstms. .THU...SW winds 10 to 15 kt. Seas 4 to 6 ft. Showers likely. .THU NIGHT...W winds around 10 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-141500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 4 ft. Wave Detail: S 4 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SUN...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. .MON...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds. .WED NIGHT AND THU...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W 10 to 15 kt. Seas 4 to 6 ft. Showers likely with scattered tstms. Vsby 1 to 3 NM. .THU NIGHT...W winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers. Winds and seas higher in and near tstms. 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. $$ ANZ232-141500- Nantucket Sound- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 1 foot at 7 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SUN...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and S 1 foot at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and S 1 foot at 7 seconds. .MON...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 1 foot at 7 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 7 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 7 seconds. .WED NIGHT AND THU...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W 10 to 15 kt. Seas 2 to 4 ft. Showers likely. .THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-141500- Vineyard Sound- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .SUN...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .MON...SW 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: SW 2 ft at 4 seconds and S 2 ft at 7 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 4 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 4 seconds. .WED NIGHT AND THU...SW winds 10 to 15 kt. Gusts up to 20 kt. Seas 3 to 4 ft. Showers likely. .THU NIGHT...W winds 5 to 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. $$ ANZ234-141500- Buzzards Bay- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SUN...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 7 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 4 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 4 seconds. A chance of showers. .WED NIGHT AND THU...SW winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-141500- Rhode Island Sound- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SW 1 foot at 2 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers. .WED NIGHT...SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers likely with scattered tstms. .THU...W winds around 10 kt. Seas 3 to 5 ft. Showers likely. .THU NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. 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. $$ ANZ237-141500- Block Island Sound- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. A chance of showers. .WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt. Seas 3 to 5 ft. Showers likely with scattered tstms. Vsby 1 to 3 NM. .THU NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-141500- Boston Harbor- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SUN...NW winds around 5 kt, becoming SE 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...SW winds 5 to 10 kt. Waves 1 foot or less. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 1 foot or less. A chance of showers. .WED NIGHT...SW winds 10 to 15 kt. Waves 1 foot or less. Showers likely with scattered tstms. .THU...W winds 5 to 10 kt. Waves 1 foot or less. Showers likely. .THU NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. Winds and waves higher in and near tstms. 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. $$ ANZ236-141500- Narragansett Bay- 1003 PM EDT Sat Jul 13 2024 .OVERNIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SUN...W winds around 5 kt, becoming S in the afternoon. Waves 2 to 3 ft. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers. .WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt. Waves 2 to 4 ft. Showers likely. .THU NIGHT...W winds 5 to 10 kt. Waves 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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