Coastal Waters Forecast
Issued by NWS Boston, MA

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182 FZUS51 KBOX 111528 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 1028 AM EST Tue Dec 11 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-120415- 1028 AM EST Tue Dec 11 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak low pres will pass E across the waters tonight, while high pres builds S from Quebec into Wed. This will result in ocean effect snow bands developing across the ern Massachusetts waters tonight into Wed night. Another high pres will crest over the waters Thu, then shift E of the waters on Fri. A storm system will approach the waters from the SW Fri night and Sat, lifting slowly across the waters Sat night and Sun. 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. $$ ANZ250-120415- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 3 ft. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas around 5 ft. A chance of snow showers. .WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas around 6 ft. .THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 4 to 5 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 3 ft. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. .SAT...SE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft, building to 5 ft in the afternoon. A chance of rain in the morning, then rain likely in the afternoon. .SAT NIGHT...NE winds 15 to 20 kt with gusts up to 35 kt. Seas around 6 ft, building to 9 ft after midnight. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-120415- Massachusetts Bay and Ipswich Bay- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...SW winds around 5 kt, increasing to 5 to 10 kt. Seas 1 foot or less. .TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .WED...N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 5 ft. .THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 3 to 4 ft. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...S winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. A chance of rain. .SAT...E winds 5 to 10 kt. Gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Rain likely. .SAT NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas around 5 ft, building to 8 ft after midnight. A chance of rain. 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. $$ ANZ231-120415- Cape Cod Bay- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...S winds around 5 kt, increasing to 5 to 10 kt. Seas around 2 ft. .TONIGHT...W winds around 5 kt, becoming NW after midnight. Seas around 2 ft. .WED...NW winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. A chance of snow showers. Vsby 1 to 3 NM in the morning. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 5 ft. A chance of snow showers in the evening. .THU...E winds 5 to 10 kt. Seas 3 to 4 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 5 to 10 kt. Seas around 2 ft. A chance of rain in the afternoon. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. .SAT...E winds 5 to 10 kt with gusts up to 25 kt. Seas 3 to 4 ft. Rain likely. .SAT NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 6 ft. Rain likely, mainly in the evening. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-120415- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...SE winds around 5 kt, increasing to 5 to 10 kt. Seas 3 to 4 ft. .TONIGHT...NW winds 5 to 10 kt. Seas around 3 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 with gusts up to 25 kt. Seas around 7 ft. A chance of snow showers in the evening with vsby 1 to 3 NM. .THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 4 to 5 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. .FRI...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. 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 rain. .SAT...SE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt with gusts up to 30 kt in the afternoon. Seas 5 to 6 ft. Rain likely. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 35 kt. Seas around 9 ft, building to 11 ft after midnight. Rain likely, mainly in the evening. 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. $$ ANZ255-120415- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...E winds around 5 kt. Seas around 4 ft. .TONIGHT...N winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas around 3 ft. .WED...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 5 ft. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 5 ft. .THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 4 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas around 3 ft. .FRI...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 3 ft. .FRI NIGHT...SE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 3 to 4 ft. A chance of rain in the evening, then rain likely after midnight. .SAT...SE winds 10 to 15 kt with gusts up to 30 kt. Seas around 5 ft, building to 7 ft in the afternoon. Rain likely. .SAT NIGHT...E winds 10 to 15 kt, becoming S after midnight. Gusts up to 35 kt. Seas around 10 ft, building to 12 ft after midnight. Rain likely, mainly in the evening. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-120415- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...NE winds around 5 kt, becoming SE. Seas around 3 ft. .TONIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 4 ft. .WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 5 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. .THU...E winds 10 to 15 kt. Seas around 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas around 3 ft. .FRI...SE winds 10 to 15 kt with gusts up to 20 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 rain in the evening, then rain likely after midnight. .SAT...E winds 10 to 15 kt with gusts up to 30 kt. Seas around 5 ft, building to 7 ft in the afternoon. Rain likely. .SAT NIGHT...E winds 5 to 10 kt with gusts up to 35 kt. Seas around 10 ft, building to 12 ft after midnight. Rain likely, mainly in the evening. 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. $$ ANZ232-120415- Nantucket Sound- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...E winds around 5 kt, becoming S. Seas around 2 ft. .TONIGHT...NW winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas around 2 ft. .WED...NW winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 4 ft. .THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas around 3 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .FRI...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain in the evening, then rain likely after midnight. .SAT...SE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt with gusts up to 30 kt in the afternoon. Seas around 3 ft, building to 5 ft in the afternoon. Rain likely. .SAT NIGHT...E winds 5 to 10 kt with gusts up to 35 kt. Seas 6 to 7 ft. Rain likely, mainly in the evening. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-120415- Vineyard Sound- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...NE winds around 5 kt, becoming S. Seas around 2 ft. .TONIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas around 2 ft. .WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .WED NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 3 ft. .THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas around 2 ft. .THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. .FRI...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of rain in the afternoon. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain in the evening, then rain likely after midnight. .SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. Rain likely. .SAT NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 7 to 8 ft. Rain likely, mainly in the evening. 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. $$ ANZ234-120415- Buzzards Bay- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...NE winds around 5 kt, becoming S. Seas around 2 ft. .TONIGHT...NW winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas 1 foot or less. .WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .WED NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 3 ft. .THU...E winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. .FRI...SE winds 5 to 10 kt. Seas 1 foot or less. A chance of rain in the afternoon. .FRI NIGHT...SE winds 10 to 15 kt, diminishing to 5 to 10 kt with gusts up to 20 kt after midnight. Seas around 2 ft. A chance of rain in the evening, then rain likely after midnight. .SAT...E winds 5 to 10 kt with gusts up to 25 kt. Seas 3 to 4 ft. Rain likely. .SAT NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 5 to 6 ft. Rain likely, mainly in the evening. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-120415- Rhode Island Sound- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...NE winds around 5 kt, becoming S. Seas around 3 ft. .TONIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. .WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .THU...E winds 10 to 15 kt. Seas 2 to 3 ft. .THU NIGHT...E winds 10 to 15 kt. Seas around 2 ft. .FRI...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of rain in the afternoon. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of rain in the evening, then rain likely after midnight. .SAT...E winds 10 to 15 kt. Gusts up to 30 kt. Seas 5 to 6 ft. Rain likely. .SAT NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas around 8 ft, building to 10 ft after midnight. Rain likely, mainly in the evening. 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. $$ ANZ237-120415- Block Island Sound- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...E winds around 5 kt, becoming S around 5 kt. Seas around 3 ft. .TONIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .WED NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 3 ft. .THU...E winds 10 to 15 kt. Seas around 2 ft. .THU NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .FRI...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of rain in the afternoon. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of rain in the evening, then rain likely after midnight. .SAT...E winds 10 to 15 kt with gusts up to 30 kt. Seas 5 to 6 ft. Rain likely. .SAT NIGHT...NE winds 5 to 10 kt with gusts up to 30 kt. Seas around 8 ft, building to 10 ft after midnight. Rain likely, mainly in the evening. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-120415- Boston Harbor- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...SW winds around 5 kt. Waves 1 foot or less. .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Waves 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. Waves around 2 ft. .THU...NE winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .THU NIGHT...S winds around 5 kt. Waves 1 foot or less. .FRI...S winds around 5 kt. Waves 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of rain. .SAT...E winds around 5 kt. Gusts up to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. Rain likely. .SAT NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 25 kt. Waves around 3 ft, building to 5 ft after midnight. Rain likely, mainly in the evening. 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. $$ ANZ236-120415- Narragansett Bay- 1028 AM EST Tue Dec 11 2018 .THIS AFTERNOON...NE winds around 5 kt, becoming S. Waves around 2 ft. .TONIGHT...W winds around 5 kt, becoming NW after midnight. Waves around 2 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .WED NIGHT...N winds around 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. .THU...E winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. .FRI...SE winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the afternoon. .FRI NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of rain in the evening, then rain likely after midnight. .SAT...NE winds 5 to 10 kt with gusts up to 25 kt. Waves around 3 ft. Rain likely. .SAT NIGHT...N winds 5 to 10 kt with gusts up to 25 kt. Waves around 3 ft. At the bay entrance, waves around 6 ft, building to 9 ft after midnight. Rain likely, mainly in the evening. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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