Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 231116 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 716 AM EDT Wed May 23 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-240000- 716 AM EDT Wed May 23 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Low clouds and fog, along with the chance of showers, perhaps even a thunderstorm lingers this morning prior to a series of sweeping cold fronts later today. Thereafter, high pressure and light winds for late week, over the waters Thursday, southeast of the waters Friday. Warming ahead of a holiday weekend cold front with shower and thunderstorm chances in advance. 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. $$ ANZ250-240000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 AM EDT Wed May 23 2018 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog this morning. A slight chance of showers this afternoon. .TONIGHT...NW winds 5 to 10 kt, becoming NE with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .THU...NE winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt. Seas 4 to 6 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-240000- Massachusetts Bay and Ipswich Bay- 716 AM EDT Wed May 23 2018 .TODAY...W winds 5 to 10 kt, becoming S this afternoon. Seas 1 foot or less. Patchy fog this morning. A slight chance of showers this afternoon. .TONIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. .THU...E winds around 5 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 10 to 15 kt with gusts up to 25 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .SAT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .SUN...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 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. $$ ANZ231-240000- Cape Cod Bay- 716 AM EDT Wed May 23 2018 .TODAY...W winds 5 to 10 kt. Seas 1 foot or less. A chance of showers this morning. A slight chance of showers this afternoon. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. .THU...NE winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-240000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 AM EDT Wed May 23 2018 .TODAY...W winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 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 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN...E winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 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. $$ ANZ255-240000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 AM EDT Wed May 23 2018 .TODAY...W winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers, mainly this morning. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. .THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT...SW winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-240000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 AM EDT Wed May 23 2018 .TODAY...W winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers this morning. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 3 to 4 ft. .THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 3 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of showers. .SUN...E winds 5 to 10 kt. Seas around 3 ft. A chance of showers. .SUN NIGHT...E winds around 10 kt. Seas 2 to 3 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. $$ ANZ232-240000- Nantucket Sound- 716 AM EDT Wed May 23 2018 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Showers likely this morning. A slight chance of showers this afternoon. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. .THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-240000- Vineyard Sound- 716 AM EDT Wed May 23 2018 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Showers likely, mainly this morning. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. .THU...NE winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 kt. Seas around 2 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...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 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. $$ ANZ234-240000- Buzzards Bay- 716 AM EDT Wed May 23 2018 .TODAY...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of showers this morning. A slight chance of showers this afternoon. Patchy fog this morning with vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. .THU...NE winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...SW winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-240000- Rhode Island Sound- 716 AM EDT Wed May 23 2018 .TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers, mainly this morning. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. .THU...NE winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 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 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 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. 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. 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. $$ ANZ237-240000- Block Island Sound- 716 AM EDT Wed May 23 2018 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A chance of showers this morning. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. .THU...NE winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Patchy dense fog. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-240000- Boston Harbor- 716 AM EDT Wed May 23 2018 .TODAY...W winds 5 to 10 kt, becoming E this afternoon. Waves 1 foot or less. Patchy fog this morning. A slight chance of showers this afternoon. .TONIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Waves 1 foot or less. .THU...E winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Waves around 2 ft. .THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Waves around 2 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 foot or less. .SAT...W winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT NIGHT...E winds around 5 kt. Waves 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. A chance of showers. .SUN NIGHT...NE winds around 5 kt. Waves 1 foot or less. 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. $$ ANZ236-240000- Narragansett Bay- 716 AM EDT Wed May 23 2018 .TODAY...W winds 5 to 10 kt. Waves around 2 ft. A slight chance of showers. Patchy fog this morning with vsby 1 NM or less. .TONIGHT...W winds around 5 kt, becoming N after midnight. Waves 2 to 3 ft. .THU...NE winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .FRI...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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