Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 211116 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 716 AM EDT Wed Oct 21 2020 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-220000- 716 AM EDT Wed Oct 21 2020 .Synopsis for Massachusetts and Rhode Island coastal waters... A ridge of high pres will remain anchored well to the south, as a frontal system passes through northern New England tonight. High pres then builds into the waters thru the rest of the workweek. A weak cold front passes thru the waters on Saturday. For additional information on possible hazardous weather for the week ahead, please visit www.weather.gov/boston/ehwo. $$ ANZ250-220000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 AM EDT Wed Oct 21 2020 .TODAY...E winds 5 to 10 kt, becoming S this afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Areas of fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt, becoming NE in the afternoon. Seas 3 to 4 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 4 to 6 ft. .FRI...E winds around 10 kt with gusts up to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 5 to 7 ft. .SAT AND SAT NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming N 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. .SUN...N winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-220000- Massachusetts Bay and Ipswich Bay- 716 AM EDT Wed Oct 21 2020 .TODAY...E winds 5 to 10 kt with gusts up to 20 kt, becoming S this afternoon. Seas 2 to 4 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 4 ft. Areas of fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. .THU NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. .FRI...E winds 5 to 10 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. .SAT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 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. $$ ANZ231-220000- Cape Cod Bay- 716 AM EDT Wed Oct 21 2020 .TODAY...E winds around 5 kt, becoming S this afternoon. Seas 1 foot or less. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Areas of fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt, becoming N in the afternoon. Seas around 2 ft. Areas of fog. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...E winds 5 to 10 kt. Seas around 3 ft. .FRI NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas around 3 ft. .SAT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-220000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 AM EDT Wed Oct 21 2020 .TODAY...S winds 5 to 10 kt. Seas 3 to 4 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Areas of dense fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt, becoming N in the afternoon. Seas 3 to 5 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 4 to 7 ft. .FRI AND FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .SAT THROUGH SUN...N winds 15 to 20 kt with gusts up to 35 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 8 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. $$ ANZ255-220000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 AM EDT Wed Oct 21 2020 .TODAY...S winds around 5 kt, increasing to around 10 kt this afternoon. Seas 2 to 4 ft. Areas of dense fog this morning, then areas of fog this afternoon. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Areas of dense fog. Vsby 1 NM or less. .THU...NW winds 5 to 10 kt. Seas 4 to 6 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 4 to 6 ft. .FRI AND FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. .SAT THROUGH SUN NIGHT...E winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-220000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 AM EDT Wed Oct 21 2020 .TODAY...SE winds 5 to 10 kt, becoming S this afternoon. Seas 3 to 4 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds around 10 kt. Seas 3 to 4 ft. Areas of dense fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt. Seas 3 to 5 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .FRI AND FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .SAT THROUGH SUN NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 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. $$ ANZ232-220000- Nantucket Sound- 716 AM EDT Wed Oct 21 2020 .TODAY...S winds 5 to 10 kt. Seas around 2 ft. Areas of dense fog this morning, then areas of fog this afternoon. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Areas of dense fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt, becoming N in the afternoon. Seas around 2 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI AND FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .SAT THROUGH SUN...NE winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-220000- Vineyard Sound- 716 AM EDT Wed Oct 21 2020 .TODAY...SE winds around 5 kt, becoming S this afternoon. Seas around 2 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Areas of dense fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. .SAT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 30 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. $$ ANZ234-220000- Buzzards Bay- 716 AM EDT Wed Oct 21 2020 .TODAY...E winds around 5 kt, becoming S this afternoon. Seas 1 foot or less. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Areas of dense fog. Vsby 1 NM or less. .THU...W winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .FRI AND FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-220000- Rhode Island Sound- 716 AM EDT Wed Oct 21 2020 .TODAY...SE winds 5 to 10 kt, becoming S this afternoon. Seas 2 to 3 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Areas of dense fog. Vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. .FRI...E winds around 10 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 3 to 5 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 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. $$ ANZ237-220000- Block Island Sound- 716 AM EDT Wed Oct 21 2020 .TODAY...SE winds around 5 kt, becoming S this afternoon. Seas 2 to 3 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Areas of dense fog. Vsby 1 NM or less. .THU...SW winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. .FRI...E winds around 10 kt. Gusts up to 20 kt in the morning. Seas 4 to 5 ft. Areas of fog. Vsby 1 NM or less. .FRI NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 4 to 5 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-220000- Boston Harbor- 716 AM EDT Wed Oct 21 2020 .TODAY...E winds 5 to 10 kt, becoming S this afternoon. Waves 1 foot or less. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Areas of fog. .THU...W winds around 5 kt, becoming NE in the afternoon. Waves 1 foot or less. .THU NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. .FRI...E winds 5 to 10 kt. Waves 1 foot or less. Areas of fog. Vsby 1 to 3 NM. .FRI NIGHT...S winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .SAT THROUGH SUN NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. 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. $$ ANZ236-220000- Narragansett Bay- 716 AM EDT Wed Oct 21 2020 .TODAY...E winds around 5 kt, becoming S this afternoon. Waves around 2 ft. Areas of fog. Areas of drizzle this morning. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Areas of fog. Vsby 1 NM or less. .THU...W winds around 5 kt, becoming SW in the afternoon. Waves 2 to 3 ft. Areas of fog. Vsby 1 to 3 NM. .THU NIGHT...E winds around 5 kt. Waves 2 to 3 ft. .FRI...E winds 5 to 10 kt. Waves 2 to 3 ft. Areas of fog. Vsby 1 to 3 NM. .FRI NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Waves 2 to 3 ft. .SAT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston

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