Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 131216 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 716 AM EST Thu Dec 13 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-140100- 716 AM EST Thu Dec 13 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres builds SE across nrn New England today. This high pres will 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. High pres builds back towards the waters from the W on Tue. 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. $$ ANZ250-140100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 AM EST Thu Dec 13 2018 .TODAY...NE winds 5 to 10 kt, becoming SE this afternoon. Seas 2 to 4 ft. .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain. .SAT...SW winds 10 to 15 kt, becoming NW in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of rain. .MON...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 8 ft. A chance of rain. .MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-140100- Massachusetts Bay and Ipswich Bay- 716 AM EST Thu Dec 13 2018 .TODAY...E winds 5 to 10 kt, becoming SE this afternoon. Seas 2 to 3 ft. .TONIGHT...S winds around 5 kt. Seas around 2 ft. .FRI...S winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of rain. .SAT...W winds 5 to 10 kt with gusts up to 20 kt, becoming NW in the afternoon. Seas around 2 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of rain. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. A chance of rain. .MON NIGHT...NW winds 15 to 20 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. $$ ANZ231-140100- Cape Cod Bay- 716 AM EST Thu Dec 13 2018 .TODAY...E winds 5 to 10 kt. Seas 2 to 3 ft. .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .FRI...S winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. .SAT...SW winds 5 to 10 kt, becoming N in the afternoon. Seas around 2 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas around 4 ft. A chance of rain. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of rain. .MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. .MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-140100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 AM EST Thu Dec 13 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING... .TODAY...E winds 5 to 10 kt, diminishing to around 5 kt this afternoon. Seas 3 to 5 ft. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...SE winds 5 to 10 kt. Seas around 3 ft. .FRI NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of rain. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW in the afternoon. Seas 2 to 4 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of rain. .SUN NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 8 ft. A chance of rain. .MON...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of rain. .MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 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. $$ ANZ255-140100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 AM EST Thu Dec 13 2018 .TODAY...E winds 5 to 10 kt. Seas 2 to 4 ft. .TONIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt after midnight. Seas 2 to 3 ft. .FRI...SE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of rain. .SAT...SW winds 5 to 10 kt, becoming NE with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. A chance of rain. .SAT NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .SUN...E winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. A chance of rain. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of rain. .MON...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of rain. .MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-140100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 AM EST Thu Dec 13 2018 .TODAY...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers this afternoon. .TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...SE winds 5 to 10 kt. Seas 3 to 4 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of rain. .SAT...S winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. A chance of rain. .SAT NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .SUN...E winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of rain. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of rain. .MON...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of rain. .MON NIGHT...NW winds 20 to 25 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. $$ ANZ232-140100- Nantucket Sound- 716 AM EST Thu Dec 13 2018 .TODAY...E winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .FRI...SE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. .SAT...SW winds 5 to 10 kt, becoming N in the afternoon. Seas around 2 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of rain. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of rain. .MON...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. .MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-140100- Vineyard Sound- 716 AM EST Thu Dec 13 2018 .TODAY...E winds 5 to 10 kt. Seas 1 foot or less. A chance of flurries this afternoon. .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .FRI...SE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. .SAT...SW winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of rain. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. .MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of rain. .MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 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. $$ ANZ234-140100- Buzzards Bay- 716 AM EST Thu Dec 13 2018 .TODAY...E winds 5 to 10 kt. Seas 1 foot or less. A chance of flurries this afternoon. .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .FRI...SE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. .SAT...SW winds around 5 kt, becoming N in the afternoon. Seas around 2 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of rain. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of rain. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. .MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-140100- Rhode Island Sound- 716 AM EST Thu Dec 13 2018 .TODAY...E winds around 10 kt. Seas around 2 ft. A chance of sprinkles and flurries this afternoon. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...SE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain. .SAT...SW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. .SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of rain. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of rain. .MON...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of rain. .MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 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. $$ ANZ237-140100- Block Island Sound- 716 AM EST Thu Dec 13 2018 .TODAY...E winds around 10 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. A chance of showers this afternoon. .TONIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .FRI...SE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain. .SAT...SW winds around 5 kt, becoming NE in the afternoon. Seas 2 to 3 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. .SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of rain. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of rain. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. .MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-140100- Boston Harbor- 716 AM EST Thu Dec 13 2018 .TODAY...NE winds 5 to 10 kt, becoming SE this afternoon. Waves 1 foot or less. .TONIGHT...S winds around 5 kt. Waves 1 foot or less. .FRI...S winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of rain. .SAT...W winds around 5 kt, becoming NW in the afternoon. Waves 1 foot or less. A chance of rain. .SAT NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SUN...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of rain. .SUN NIGHT...NE winds around 10 kt. Waves 2 to 4 ft. A chance of rain. .MON...N winds 5 to 10 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. .MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 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. $$ ANZ236-140100- Narragansett Bay- 716 AM EST Thu Dec 13 2018 .TODAY...E winds 5 to 10 kt. Waves 1 foot or less. A chance of flurries this afternoon. .TONIGHT...E winds 5 to 10 kt. Waves around 2 ft. .FRI...SE winds 5 to 10 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds around 5 kt. Waves 2 to 3 ft. A chance of rain. .SAT...SW winds around 5 kt, becoming N in the afternoon. Waves around 2 ft. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. A chance of rain. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft, except 4 to 7 ft at the bay entrance. A chance of rain. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of rain. .MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates, please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston

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