Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 161217 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 717 AM EST Sat Dec 16 2017 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-170100- 717 AM EST Sat Dec 16 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will cross the waters this evening. High pres builds over New Eng Sun, then a warm front will lift across the waters Mon. Another cold front will sweep across New Eng and the coastal waters Tue night followed by gusty winds Wed. 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. $$ ANZ250-170100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt, increasing to 20 to 25 kt this afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. .TONIGHT...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 3 to 5 ft. .SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. A chance of flurries. .MON...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .WED...W winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-170100- Massachusetts Bay and Ipswich Bay- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of snow and drizzle. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 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. $$ ANZ231-170100- Cape Cod Bay- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. .SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. A chance of flurries. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of rain and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-170100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt, increasing to 20 to 25 kt this afternoon. Gusts up to 30 kt. Seas 4 to 7 ft. .TONIGHT...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 4 to 7 ft. .SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SUN NIGHT...NW winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. A chance of flurries. .MON...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED...W winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 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. $$ ANZ255-170100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. .TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 8 ft. .SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SUN NIGHT...W winds around 5 kt. Seas 2 to 3 ft. .MON...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Patchy fog. A chance of rain and drizzle. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. .WED...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-170100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. .TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. .SUN...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SUN NIGHT...NW winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. A chance of snow. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. A chance of drizzle. Vsby 1 to 3 NM. .MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .TUE...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. .WED...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. .WED 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. $$ ANZ232-170100- Nantucket Sound- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. .SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of rain, drizzle and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-170100- Vineyard Sound- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...SW winds around 5 kt. Seas 1 foot or less. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 1 foot or less. Patchy fog. A chance of rain, drizzle and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 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. $$ ANZ234-170100- Buzzards Bay- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...NW winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...S winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. A chance of rain, drizzle and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-170100- Rhode Island Sound- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. .TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. .SUN...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SUN NIGHT...NW winds around 5 kt, becoming SW around 5 kt after midnight. Seas around 2 ft. A chance of snow. Vsby 1 to 3 NM. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of rain, drizzle and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED 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. $$ ANZ237-170100- Block Island Sound- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. .SUN...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...NW winds around 5 kt, becoming SW after midnight. Seas 1 foot or less. A chance of snow. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. A chance of drizzle and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .TUE...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-170100- Boston Harbor- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .TODAY...W winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Gusts up to 25 kt. Waves around 2 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SUN...NW winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...SW winds around 5 kt. Waves 1 foot or less. A chance of snow. Vsby 1 to 3 NM. .MON...SW winds around 5 kt. Waves 1 foot or less. A chance of snow. Vsby 1 to 3 NM. .MON NIGHT...W winds around 5 kt. Waves 1 foot or less. .TUE...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 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. $$ ANZ236-170100- Narragansett Bay- 717 AM EST Sat Dec 16 2017 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .TONIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Waves 2 to 3 ft. .SUN...NW winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...NW winds around 5 kt, becoming SW after midnight. Waves 1 foot or less. A chance of snow. Vsby 1 to 3 NM. .MON...S winds around 5 kt, becoming SW around 5 kt in the afternoon. Waves 1 foot or less. A chance of drizzle and snow. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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