Coastal Waters Forecast
Issued by NWS Boston, MA

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651 FZUS51 KBOX 132305 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 705 PM EDT Thu Jun 13 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-141200- 705 PM EDT Thu Jun 13 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. $$ ANZ250-141200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 4 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SAT...N winds around 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 2 ft at 8 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 2 ft at 9 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-141200- Massachusetts Bay and Ipswich Bay- 705 PM EDT Thu Jun 13 2024 .TONIGHT...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. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and SW 1 foot at 3 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SAT...N winds around 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and E 2 ft 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 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and E 1 foot at 7 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 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. 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. $$ ANZ231-141200- Cape Cod Bay- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Showers likely. .SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 7 seconds. Showers likely, mainly in the morning. Patchy fog in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 7 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-141200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. A chance of. Patchy dense fog. A chance of. Vsby 1 NM or less. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. Patchy dense fog in the morning with vsby 1 NM or less. .FRI NIGHT...S winds around 10 kt with gusts up to 20 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 4 seconds. Patchy fog. 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, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 7 seconds. Showers likely, mainly in the morning. Patchy fog 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 3 ft at 5 seconds and SE 3 ft at 9 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and N 2 ft at 4 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. $$ ANZ255-141200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. Patchy dense fog. A chance of showers after midnight. Vsby 1 NM or less. .FRI...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. Patchy dense fog in the morning. Patchy fog in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .FRI NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM in the evening. .SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: NW 2 ft at 4 seconds and SE 2 ft at 7 seconds. Showers likely, mainly in the morning. Patchy fog in the morning. .SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and NE 2 ft at 4 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and N 2 ft at 4 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-141200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. A chance of. Patchy fog this evening, then patchy dense fog after midnight. A chance of. Vsby 1 NM or less. .FRI...S winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 5 seconds. .FRI NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. Patchy fog. Showers likely. .SAT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and W 2 ft at 5 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: S 3 ft at 8 seconds and NE 2 ft at 3 seconds. .SUN AND SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and N 2 ft at 4 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. $$ ANZ232-141200- Nantucket Sound- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. A chance of with patchy dense fog. A chance of. Vsby 1 NM or less. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 1 foot at 8 seconds. .FRI NIGHT...SW winds around 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. A chance of showers in the evening, then showers likely after midnight. Patchy fog after midnight. Vsby 1 to 3 NM in the evening. .SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 7 seconds. Showers likely, mainly in the morning. Patchy fog in the morning. .SAT NIGHT...N winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SE 1 foot at 8 seconds. .SUN AND SUN NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-141200- Vineyard Sound- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 5 to 10 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 7 seconds. A chance of with patchy dense fog. A chance of. Vsby 1 NM or less. .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 S 2 ft at 7 seconds. .FRI NIGHT...SW winds around 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. Patchy fog. Showers likely. .SAT...N 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: NW 1 foot at 4 seconds and SE 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: S 2 ft at 8 seconds and NE 1 foot at 3 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and N 1 foot at 3 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. $$ ANZ234-141200- Buzzards Bay- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and S 1 foot at 8 seconds. A chance of. Patchy fog this evening, then patchy dense fog after midnight. A chance of. Vsby 1 NM or less. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. Patchy fog. Showers likely. .SAT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 2 seconds and NW 1 foot at 5 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and SW 1 foot at 5 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and N 1 foot at 3 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-141200- Rhode Island Sound- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at 4 seconds. A chance of. Patchy dense fog. A chance of. Vsby 1 NM or less. .FRI...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 6 seconds. Patchy dense fog in the morning with vsby 1 NM or less. .FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. Patchy fog. Showers likely. .SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and W 2 ft at 5 seconds. Showers likely in the morning. .SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NE 1 foot at 3 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and N 1 foot at 3 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. $$ ANZ237-141200- Block Island Sound- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at 4 seconds. Patchy dense fog this evening with vsby 1 NM or less. .FRI...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 8 seconds. .FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. Patchy fog. Showers likely. .SAT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 5 seconds. Showers likely in the morning. .SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and NE 1 foot at 3 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and N 1 foot at 3 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-141200- Boston Harbor- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds around 10 kt. Gusts up to 20 kt this evening. Waves 1 foot or less, then around 2 ft after midnight. .FRI...SW winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. Showers likely in the afternoon. .FRI NIGHT...W winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. Patchy fog. Showers. Vsby 1 to 3 NM. .SAT...N winds around 10 kt. 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. 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. $$ ANZ236-141200- Narragansett Bay- 705 PM EDT Thu Jun 13 2024 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Waves around 2 ft. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Waves around 2 ft. Patchy fog. Showers likely. .SAT...N winds 5 to 10 kt. Waves around 2 ft. Showers likely in the morning. .SAT NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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