Coastal Waters Forecast
Issued by NWS Boston, MA

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764 FZUS51 KBOX 191103 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 703 AM EDT Wed Jun 19 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-200000- 703 AM EDT Wed Jun 19 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres remains anchored over the far eastern outer waters through the end of the workweek. This will maintain SSW wind gusts 20-25 knots on most waters through Thursday, turning northeast Friday and Saturday. Scattered showers and thunderstorms possible each afternoon and evening from Thursday through Monday. $$ ANZ250-200000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt, becoming S 15 to 20 kt this afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 11 seconds. .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at 10 seconds. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 10 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers. .FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SE 1 foot at 2 seconds. A chance of showers. .SAT NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-200000- Massachusetts Bay and Ipswich Bay- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 10 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 1 foot at 10 seconds. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 9 seconds. Scattered showers in the afternoon. .THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 10 seconds. A chance of showers. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: W 1 foot at 3 seconds and E 1 foot at 9 seconds, becoming NE 2 ft at 6 seconds and W 1 foot at 3 seconds. A chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 5 seconds. A chance of showers. .SAT...E winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .SAT NIGHT AND SUN...S winds 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. 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. $$ ANZ231-200000- Cape Cod Bay- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 11 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 10 seconds. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers. .FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 9 seconds. A chance of showers. .SAT AND SAT NIGHT...E winds 5 to 10 kt, becoming S. Seas 1 foot or less, then around 2 ft. Wave Detail: E 1 foot at 4 seconds, becoming SE 1 foot at 2 seconds and E 1 foot at 5 seconds. A chance of showers. .SUN AND SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-200000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 11 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 10 seconds. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers after midnight. .FRI...W winds 10 to 15 kt, becoming N 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and W 1 foot at 4 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 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. $$ ANZ255-200000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 11 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 10 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog in the evening with vsby 1 to 3 NM. .FRI...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers in the morning. .FRI NIGHT...NE winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-200000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 10 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 10 seconds. Patchy fog after midnight with vsby 1 NM or less. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. Patchy fog in the evening. .FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .SUN NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers likely. 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. $$ ANZ232-200000- Nantucket Sound- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 11 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds. .THU...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight. .FRI...W winds 10 to 15 kt, becoming NW in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 8 seconds, becoming W 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 5 seconds and SW 1 foot at 5 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less, then around 2 ft. A chance of showers. .SUN AND SUN NIGHT...S winds 15 to 20 kt, becoming SW 20 to 25 kt. Gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-200000- Vineyard Sound- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 11 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. .FRI...W winds around 10 kt, becoming NW in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 8 seconds, becoming SW 1 foot at 5 seconds and SE 1 foot at 8 seconds. A chance of showers. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 5 seconds and SW 1 foot at 5 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt. Seas 1 foot or less, then around 2 ft. A chance of showers. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SW winds 20 to 25 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. $$ ANZ234-200000- Buzzards Bay- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 11 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight. .FRI...W winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 8 seconds, becoming SW 1 foot at 5 seconds and SE 1 foot at 8 seconds. A chance of showers. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 4 seconds and SW 1 foot at 5 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt. Seas 1 foot or less, then around 2 ft. A chance of showers. .SUN AND SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-200000- Rhode Island Sound- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 11 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. .FRI...SW winds around 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and S 2 ft at 8 seconds. A chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...SW winds 20 to 25 kt. Seas 4 to 6 ft. Showers likely. 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. $$ ANZ237-200000- Block Island Sound- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. .FRI...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and S 2 ft at 8 seconds. A chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 5 seconds. A chance of showers. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-200000- Boston Harbor- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 10 to 15 kt. Waves 1 foot or less, then around 2 ft this afternoon. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .THU...SW winds 5 to 10 kt. Waves 1 foot or less. Scattered showers in the afternoon. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Waves 1 foot or less. Showers likely. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT...E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT NIGHT AND SUN...S winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 foot or less, then around 2 ft. A chance of showers. .SUN NIGHT...SW winds around 15 kt with gusts up to 20 kt. Waves around 2 ft. Showers likely. 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. $$ ANZ236-200000- Narragansett Bay- 703 AM EDT Wed Jun 19 2024 .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Waves around 2 ft. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. .THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. .FRI AND FRI NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SAT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT NIGHT...S winds around 10 kt. Waves around 2 ft. A chance of showers. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. A chance of showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 3 to 5 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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