Coastal Waters Forecast
Issued by NWS Boston, MA

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052 FZUS51 KBOX 140504 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 104 AM EDT Fri Jun 14 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-141800- 104 AM EDT Fri Jun 14 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure provides dry weather and southwest winds through Friday. Then very late Fri into Fri night, an approaching cold front will be accompanied by scattered showers and thunderstorms, possibly accompanied by strong winds, downpours and frequent lightning, especially near shore. Saturday morning a few showers may linger, before the cold front exits offshore Saturday afternoon. Meanwhile, a tropical low will likely track southeast of the 40N/70W benchmark Saturday, then across eastern Georges Bank Sat night and finally out to sea. High pressure builds over New England Sunday, then offshore Monday. This will yield a prolong period of SSW flow next week along with a very warm airmass. $$ ANZ250-141800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers in the afternoon. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. Showers. Scattered tstms after midnight. Some tstms may produce heavy rainfall after midnight. .SAT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and NW 2 ft at 3 seconds. Showers, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 14 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 6 seconds and S 1 foot at 2 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-141800- Massachusetts Bay and Ipswich Bay- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers in the afternoon. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. Showers. Scattered tstms. Some tstms may produce damaging winds, frequent lightning, and heavy rainfall in the evening. Some tstms may produce heavy rainfall. .SAT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and NW 1 foot at 3 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and E 1 foot at 15 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and E 1 foot at 14 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. 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. $$ ANZ231-141800- Cape Cod Bay- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. A chance of showers in the evening, then showers likely after midnight. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 7 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 15 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 14 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-141800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds. .FRI...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight with vsby 1 NM or less. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: NW 2 ft at 5 seconds and SE 2 ft at 7 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .SAT NIGHT AND SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 7 seconds and SE 1 foot at 14 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 2 ft at 13 seconds. .MON THROUGH TUE 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. $$ ANZ255-141800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 15 seconds. A chance of showers after midnight. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: W 3 ft at 6 seconds and SE 2 ft at 7 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and NE 3 ft at 7 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 7 seconds and SW 2 ft at 7 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-141800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers. Vsby 1 to 3 NM in the evening. .SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 6 seconds and SE 2 ft at 8 seconds. Showers likely in the morning. .SAT NIGHT...NE winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 7 seconds and S 2 ft at 8 seconds. .SUN AND SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and SW 2 ft at 8 seconds. .MON THROUGH TUE NIGHT...SW 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. $$ ANZ232-141800- Nantucket Sound- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. .FRI...SW winds around 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. A chance of showers after midnight. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 6 seconds and SE 1 foot at 15 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 15 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds and NW 2 ft at 7 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-141800- Vineyard Sound- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 8 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. A chance of showers in the evening, then showers likely after midnight. .SAT...N winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 5 seconds and E 1 foot at 7 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 4 seconds and SW 1 foot at 6 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 6 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 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. $$ ANZ234-141800- Buzzards Bay- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. A chance of showers in the evening. Showers likely after midnight. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 4 seconds and E 1 foot at 8 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and SW 1 foot at 5 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 5 seconds and W 1 foot at 7 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-141800- Rhode Island Sound- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at 8 seconds. .FRI...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. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM in the evening. .SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 5 seconds and SE 2 ft at 8 seconds. Showers likely in the morning. .SAT NIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 8 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and S 2 ft at 8 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 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. $$ ANZ237-141800- Block Island Sound- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds. A chance of showers in the evening, then showers likely after midnight. .SAT...N winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 6 seconds and SE 2 ft at 8 seconds. Showers likely in the morning. .SAT NIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and S 2 ft at 7 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 7 seconds and S 2 ft at 8 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-141800- Boston Harbor- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers in the afternoon. .FRI NIGHT...SW winds 10 to 15 kt, becoming W around 5 kt after midnight. Waves around 2 ft in the evening, then 1 foot or less. Showers. Scattered tstms. Some tstms may produce damaging winds, frequent lightning, and heavy rainfall in the evening. Some tstms may produce heavy rainfall. .SAT...N winds 5 to 10 kt, becoming NE in the afternoon. Waves around 2 ft. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt. Waves 1 foot or less. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. 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. $$ ANZ236-141800- Narragansett Bay- 104 AM EDT Fri Jun 14 2024 .REST OF TONIGHT...SW winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers in the afternoon. .FRI NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming W after midnight. Waves around 2 ft. Showers likely. .SAT...N winds 5 to 10 kt. Waves around 2 ft. Showers likely in the morning. .SAT NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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