Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 101503 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 1003 AM EST Mon Dec 10 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-110415- 1003 AM EST Mon Dec 10 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A strengthening coastal low off the mid Atlc coast will track well southeast of Nantucket today, while high pres across Quebec builds into northern New England. Light ocean effect showers and flurries are possible around midday into this afternoon across the waters E of Cape Cod and Nantucket. Ocean effect snow bands will develop across the eastern Massachusetts waters Tue night and Wed. High pres will cross the waters Thu before shifting E on Fri. 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. $$ ANZ250-110415- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A slight chance of rain and snow showers. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. .TUE...E winds around 5 kt, becoming SW in the afternoon. Seas around 3 ft. .TUE NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas around 4 ft. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. A chance of snow showers. Vsby 1 to 3 NM. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 6 to 7 ft. .THU...N winds 5 to 10 kt, becoming SW in the afternoon. Seas 4 to 5 ft. .THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 4 ft. .FRI NIGHT...S winds 10 to 15 kt, becoming SE 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 5 ft. A chance of showers after midnight. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-110415- Massachusetts Bay and Ipswich Bay- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .TUE...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .WED...N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. .WED NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 5 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 3 to 4 ft. .THU NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Seas around 3 ft. .FRI...S winds 5 to 10 kt. Seas around 3 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers after midnight. 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. $$ ANZ231-110415- Cape Cod Bay- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. A slight chance of rain and snow showers. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .TUE...NE winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .TUE NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .WED...N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft, building to 5 ft in the afternoon. A chance of snow showers. Vsby 1 to 3 NM. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of snow showers in the evening with vsby 1 to 3 NM. .THU...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 3 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 3 ft. .FRI...S winds 5 to 10 kt. Seas around 3 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers after midnight. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-110415- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A slight chance of rain and snow showers. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 4 ft. .TUE...E winds 5 to 10 kt. Seas around 4 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 4 ft. .WED...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 6 ft. A chance of snow showers. Vsby 1 to 3 NM. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 7 ft. A chance of snow showers in the evening. Vsby 1 to 3 NM. .THU...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 5 ft. .THU NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas around 4 ft. .FRI...S winds 5 to 10 kt. Seas around 4 ft. .FRI NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 5 ft. A chance of showers after midnight. 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. $$ ANZ255-110415- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt after midnight. Seas around 4 ft. .TUE...NE winds 5 to 10 kt. Seas around 4 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 4 ft. .WED...N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. A chance of snow showers in the afternoon. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 6 ft. .THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 4 to 5 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 4 ft. .FRI...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 4 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 6 ft. A chance of showers after midnight. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-110415- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas around 4 ft. .TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 4 ft. .TUE...NE winds 5 to 10 kt. Seas around 4 ft. .TUE NIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 4 ft. .WED...N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 4 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 5 ft. .THU...E winds around 10 kt, becoming SE in the afternoon. Seas 3 to 4 ft. .THU NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas around 4 ft. .FRI...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 4 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 6 ft. A chance of showers after midnight. 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. $$ ANZ232-110415- Nantucket Sound- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A slight chance of rain and snow showers. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .TUE...NE winds around 5 kt. Seas around 2 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. .WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of snow showers in the afternoon. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 4 ft. .THU...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 3 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 3 ft. .FRI...S winds 5 to 10 kt. Seas around 3 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers after midnight. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-110415- Vineyard Sound- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft, then 1 foot or less. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. .TUE...NE winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. .WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. .WED NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 3 ft. .THU...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 3 ft. .FRI...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 3 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers after midnight. 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. $$ ANZ234-110415- Buzzards Bay- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft, then 1 foot or less. .TONIGHT...N winds 5 to 10 kt. Seas 1 foot or less. .TUE...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .WED...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .THU...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers after midnight. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-110415- Rhode Island Sound- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. .TUE...NE winds 5 to 10 kt. Seas 3 to 4 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. .WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. .THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 3 ft. .THU NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Seas around 3 ft. .FRI...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of showers after midnight. 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. $$ ANZ237-110415- Block Island Sound- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TONIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft. .TUE...NE winds around 5 kt. Seas around 3 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. .WED...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt after midnight. Seas around 3 ft. .THU...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 3 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 3 ft. .FRI...SE winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-110415- Boston Harbor- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds around 10 kt. Gusts up to 20 kt. Waves 1 foot or less. .TONIGHT...N winds 5 to 10 kt. Waves 1 foot or less. .TUE...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 foot or less. .TUE NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .WED...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Waves around 2 ft. .WED NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. At the outer harbor entrance, waves around 4 ft. .THU...NW winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .THU NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .FRI...S winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers after midnight. 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. $$ ANZ236-110415- Narragansett Bay- 1003 AM EST Mon Dec 10 2018 .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft, then 1 foot or less. .TONIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. .TUE...N winds around 5 kt, becoming S in the afternoon. Waves around 3 ft. .TUE NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. .WED...N winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. .WED NIGHT...N winds 5 to 10 kt. Waves around 2 ft. .THU...NE winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Waves around 2 ft. .FRI...S winds 5 to 10 kt. Waves 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Waves 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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