Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 202300 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 600 PM EST Sat Jan 20 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-211115- 600 PM EST Sat Jan 20 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Large high pressure will build S of the waters this weekend. Low pres will pass well W of the region late Monday, but its associated front will likely bring periods of rain and gusty southerly winds Mon night into Tue, shifting to W on 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. $$ ANZ250-211115- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...SE winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers likely. .TUE...SE winds 20 to 25 kt, becoming S 25 to 30 kt in the afternoon. Gusts up to 40 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. A chance of showers. .WED...W winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. Light freezing spray. .THU...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Freezing spray. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. Freezing spray. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-211115- Massachusetts Bay and Ipswich Bay- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... .TONIGHT...W winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt, diminishing to around 5 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...NE winds around 5 kt, becoming E in the afternoon. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .TUE...S winds 15 to 20 kt with gusts up to 40 kt. Seas 5 to 8 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 3 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 3 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 3 ft. Freezing spray. 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. $$ ANZ231-211115- Cape Cod Bay- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... .TONIGHT...W winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt, becoming NW in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...S winds around 5 kt, becoming E around 5 kt in the afternoon. Seas 1 to 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. A chance of showers. .TUE...S winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. Freezing spray. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Freezing spray. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Freezing spray. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-211115- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SUN...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. .SUN NIGHT...W winds around 5 kt. Seas 2 to 3 ft. .MON...SW winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .TUE...S winds 20 to 25 kt with gusts up to 40 kt. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Light freezing spray. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. Light freezing spray. 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. $$ ANZ255-211115- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. .SUN...NW winds 5 to 10 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds around 5 kt. Seas 2 to 3 ft. .MON...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. .TUE...S winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds around 20 kt with gusts up to 35 kt. Seas 7 to 10 ft. A chance of showers. .WED...W winds around 20 kt with gusts up to 35 kt. Seas 6 to 9 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Freezing spray. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Freezing spray. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-211115- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 7 ft. .SUN...NW winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds around 5 kt. Seas 2 to 3 ft. .MON...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of showers. .TUE...S winds 20 to 25 kt with gusts up to 40 kt. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt, becoming W 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 7 to 10 ft. .WED...W winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Light freezing spray. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Light freezing spray. 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. $$ ANZ232-211115- Nantucket Sound- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... .TONIGHT...W winds 10 to 15 kt with gusts up to 30 kt, diminishing to 5 to 10 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. .SUN...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. A chance of showers. .TUE...S winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 4 ft. Freezing spray. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. Freezing spray. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. Freezing spray. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-211115- Vineyard Sound- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt. Seas around 2 ft. .MON...E winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers. .MON NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .TUE...S winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .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 35 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. Freezing spray. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 3 ft. Freezing spray. 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. $$ ANZ234-211115- Buzzards Bay- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 4 ft. .SUN...W winds around 5 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...E winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. A chance of showers. .TUE...S winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. .THU...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-211115- Rhode Island Sound- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... .TONIGHT...W winds 10 to 15 kt with gusts up to 30 kt, diminishing to 5 to 10 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds around 5 kt. Seas around 2 ft. .MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of showers. .TUE...S winds 20 to 25 kt with gusts up to 40 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. .WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 7 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. Freezing spray. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Freezing spray. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 3 ft. Freezing spray. 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. $$ ANZ237-211115- Block Island Sound- 600 PM EST Sat Jan 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... .TONIGHT...W winds 5 to 10 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt. Seas around 2 ft. .MON...E winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Showers likely. .TUE...S winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 40 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. Freezing spray. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-211115- Boston Harbor- 600 PM EST Sat Jan 20 2018 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Waves 1 foot or less. .SUN...W winds around 5 kt. Waves 1 foot or less. .SUN NIGHT...W winds around 5 kt. Waves 1 foot or less. .MON...E winds around 5 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. Showers likely. .TUE...S winds 5 to 10 kt. Gusts up to 30 kt, increasing to 40 kt in the afternoon. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SW winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. .WED...W winds 10 to 15 kt with gusts up to 30 kt. Waves around 2 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Waves around 2 ft. .THU...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .THU 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. $$ ANZ236-211115- Narragansett Bay- 600 PM EST Sat Jan 20 2018 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Waves 2 to 3 ft. .SUN...W winds around 5 kt. Waves 2 to 3 ft. .SUN NIGHT...NW winds around 5 kt. Waves around 2 ft. .MON...E winds around 5 kt. Waves around 2 ft. A chance of showers. .MON NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. Showers likely. .TUE...S winds 15 to 20 kt with gusts up to 40 kt. Waves 3 to 5 ft, except 5 to 8 ft at the bay entrance. Rain. Vsby 1 to 3 NM. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Waves 3 to 5 ft. .WED...W winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 4 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 3 ft. .THU...NW winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 3 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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