Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 231942 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 342 PM EDT Wed May 23 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-240815- 342 PM EDT Wed May 23 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure will build over the waters on Thursday and will settle south of the waters on Friday. A cold front will slowly settle across the waters from the north on Saturday. This front will become mainly stationary over the waters for Sunday and Monday. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the Current Hazards link above the map on the left. $$ ANZ250-240815- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 342 PM EDT Wed May 23 2018 .TONIGHT...W winds 5 to 10 kt, becoming NE with gusts up to 25 kt after midnight. Seas 2 to 3 ft. A slight chance of showers this evening. .THU...NE winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming S 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-240815- Massachusetts Bay and Ipswich Bay- 342 PM EDT Wed May 23 2018 .TONIGHT...NW winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Seas around 2 ft. A slight chance of showers this evening. .THU...NE winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...NW winds around 5 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. $$ ANZ231-240815- Cape Cod Bay- 342 PM EDT Wed May 23 2018 .TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. A slight chance of showers this evening. .THU...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...W winds around 5 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-240815- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 342 PM EDT Wed May 23 2018 .TONIGHT...W winds 5 to 10 kt, becoming N with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A slight chance of showers this evening. .THU...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .SAT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SE 5 to 10 kt after midnight. Seas 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .MON...SE winds 5 to 10 kt. Seas 3 to 5 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...W winds around 5 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ255-240815- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 342 PM EDT Wed May 23 2018 .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. A slight chance of showers this evening. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 4 ft. .THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Seas 3 to 4 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .SAT...SW winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...SW winds around 5 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-240815- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 342 PM EDT Wed May 23 2018 .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas around 3 ft. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas around 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Seas around 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...S winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ232-240815- Nantucket Sound- 342 PM EDT Wed May 23 2018 .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 1 to 2 ft. A slight chance of showers this evening. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 to 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 25 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas 2 to 3 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...W winds around 5 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-240815- Vineyard Sound- 342 PM EDT Wed May 23 2018 .TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas 1 to 2 ft. A slight chance of showers this evening. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 to 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT 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. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...S winds around 5 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. $$ ANZ234-240815- Buzzards Bay- 342 PM EDT Wed May 23 2018 .TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. A slight chance of showers this evening. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .MON...E winds around 5 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...S winds around 5 kt. Seas 1 foot or less. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-240815- Rhode Island Sound- 342 PM EDT Wed May 23 2018 .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. A slight chance of showers this evening. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT 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. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...S winds around 5 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. $$ ANZ237-240815- Block Island Sound- 342 PM EDT Wed May 23 2018 .TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...S winds around 5 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-240815- Boston Harbor- 342 PM EDT Wed May 23 2018 .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves 1 foot or less. A slight chance of showers this evening. .THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Waves 1 foot or less. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 25 kt. Waves around 2 ft. .FRI...SW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...SW winds around 10 kt. Waves 1 foot or less. .SAT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SUN...NE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SUN NIGHT...NE winds around 5 kt. Waves 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .MON...NE winds around 5 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT...W winds around 5 kt. Waves 1 foot or less. 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. $$ ANZ236-240815- Narragansett Bay- 342 PM EDT Wed May 23 2018 .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Waves 2 to 3 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Waves around 2 ft. .THU NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves 2 to 3 ft. .FRI...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .SAT...SW winds 5 to 10 kt. Waves 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds around 5 kt. Waves around 2 ft. A chance of showers. .MON NIGHT...S winds around 5 kt. Waves 1 foot or less. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

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