


Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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914 FZUS51 KBOX 160206 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1006 PM EDT Sun Jun 15 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-161500- 1006 PM EDT Sun Jun 15 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressurewill move offshore Mon then another low pres will track S of the waters Tue. Weak high pres builds into the waters Wed. A cold front approaches the waters Thurs. $$ ANZ250-161500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 1 foot at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 1 foot at 8 seconds. Patchy fog. Vsby 1 to 3 NM in the morning. .MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and S 1 foot at 3 seconds. .TUE NIGHT AND WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and S 2 ft at 4 seconds. A chance of showers. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-161500- Massachusetts Bay and Ipswich Bay- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. Patchy fog with vsby 1 to 3 NM. .MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 1 foot at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds. A chance of showers. .WED...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and S 1 foot at 3 seconds. A chance of showers. .WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 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. $$ ANZ231-161500- Cape Cod Bay- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 2 seconds and S 1 foot at 7 seconds. .MON...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 2 seconds and S 1 foot at 7 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 2 seconds and S 1 foot at 6 seconds. .TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 2 seconds and S 1 foot at 7 seconds. .TUE NIGHT AND WED...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds. A chance of showers. .WED NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-161500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds. .MON...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .WED...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers in the morning. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 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. $$ ANZ255-161500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 7 seconds. Patchy fog. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 7 seconds. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE NIGHT...SE winds around 10 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. A chance of showers in the morning. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-161500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .MON...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 7 seconds. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE NIGHT AND WED...SW winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds. A chance of showers through the day. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 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. $$ ANZ232-161500- Nantucket Sound- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds. .MON...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. .MON NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. .TUE...E winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. .TUE NIGHT...SE winds around 10 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 7 seconds. A chance of showers in the morning. .WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-161500- Vineyard Sound- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and S 1 foot at 7 seconds. .MON...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and S 1 foot at 7 seconds. .MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and S 1 foot at 7 seconds. .TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and S 1 foot at 7 seconds. .TUE NIGHT AND WED...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SW 1 foot at 2 seconds. A chance of showers through the day. .WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 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. $$ ANZ234-161500- Buzzards Bay- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 7 seconds. .MON...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 7 seconds. .MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 7 seconds. .TUE...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 7 seconds. .TUE NIGHT AND WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds. A chance of showers through the day. .WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SW 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-161500- Rhode Island Sound- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds. .MON...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .MON NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE NIGHT AND WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A chance of showers through the day. .WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SW 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 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. $$ ANZ237-161500- Block Island Sound- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds. .MON...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .MON NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TUE NIGHT AND WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A chance of showers through the day. .WED NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and SW 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-161500- Boston Harbor- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. Patchy fog with vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. Patchy fog in the morning. .MON NIGHT...SE winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. .TUE...E winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. .TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers. .WED...SW winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of showers. .WED NIGHT...SW winds around 10 kt. Waves around 2 ft in the evening, then 1 foot or less. .THU...SW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers. .THU NIGHT THROUGH FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 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. $$ ANZ236-161500- Narragansett Bay- 1006 PM EDT Sun Jun 15 2025 .OVERNIGHT...E winds 5 to 10 kt. Waves around 2 ft. .MON...E winds 5 to 10 kt. Waves around 2 ft. .MON NIGHT...E winds 5 to 10 kt. Waves around 2 ft. .TUE...E winds 5 to 10 kt. Waves around 2 ft. .TUE NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Waves around 2 ft. A chance of showers after midnight. .WED...S winds 5 to 10 kt. Waves around 2 ft. A chance of showers in the morning. .WED NIGHT...SW winds around 10 kt. Waves around 2 ft. .THU THROUGH FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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