Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 211607 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 1107 AM EST Tue Nov 21 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-220430- 1107 AM EST Tue Nov 21 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres off the mid-Atlantic coast will yield weak southwest gales across the waters this afternoon and tonight. A cold front will move across the waters Wed afternoon and be followed by gusty northwest winds into Wed night. High pres builds over the waters Thu and Fri. Unsettled weather returns on Sat as low pres moves east across Southern Quebec. 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. $$ ANZ250-220430- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt. Gusts up to 30 kt, increasing to 40 kt. Seas 3 to 5 ft. .TONIGHT...SW winds 15 to 20 kt with gusts up to 40 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. A chance of rain. Vsby 1 to 3 NM. .WED...SW winds 5 to 10 kt, becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 3 to 5 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 3 to 5 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-220430- Massachusetts Bay and Ipswich Bay- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 35 kt. Seas 2 to 3 ft. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 35 kt, decreasing to 25 kt after midnight. Seas 2 to 3 ft. A chance of rain. Vsby 1 to 3 NM. .WED...SW winds 5 to 10 kt, becoming NW 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...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 3 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...W winds 5 to 10 kt. Seas 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. $$ ANZ231-220430- Cape Cod Bay- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 35 kt. Seas 3 to 5 ft. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 35 kt, decreasing to 25 kt after midnight. Seas 2 to 4 ft. A chance of rain. .WED...SW winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-220430- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 30 kt, increasing to 15 to 20 kt with gusts up to 40 kt. Seas 3 to 5 ft. .TONIGHT...SW winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 35 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt, becoming NW in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .THU...N winds 5 to 10 kt, becoming W in the afternoon. Seas 4 to 6 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ255-220430- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 7 ft. .TONIGHT...SW winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 35 kt. Seas 4 to 7 ft. Patchy fog. .WED...SW winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. .THU...N winds 5 to 10 kt, becoming W in the afternoon. Seas 4 to 6 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. .FRI...W winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...W winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-220430- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds around 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. .TONIGHT...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. A chance of rain. Vsby 1 to 3 NM. .WED...W winds 10 to 15 kt, becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. .THU...N winds 5 to 10 kt, becoming W in the afternoon. Seas 4 to 6 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 6 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ232-220430- Nantucket Sound- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. .TONIGHT...SW winds 15 to 20 kt with gusts up to 35 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Patchy fog. A chance of rain. .WED...SW winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...N winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. .THU...N winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...W winds around 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-220430- Vineyard Sound- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 35 kt. Seas 2 to 4 ft. A chance of rain. .WED...W winds around 10 kt, becoming NW in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-220430- Buzzards Bay- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .TONIGHT...SW winds 15 to 20 kt with gusts up to 35 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 3 to 5 ft. Rain. .WED...W winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-220430- Rhode Island Sound- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 7 ft. .TONIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 35 kt. Seas 4 to 7 ft. Rain. Vsby 1 to 3 NM. .WED...W winds 10 to 15 kt, becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .THU...N winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-220430- Block Island Sound- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT THROUGH THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 7 ft. .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 35 kt. Seas 4 to 6 ft. Rain. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .WED NIGHT...N winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. .THU...N winds 5 to 10 kt, becoming W in the afternoon. Seas 3 to 5 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-220430- Boston Harbor- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Waves around 2 ft. .TONIGHT...SW 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. Waves around 2 ft. Rain likely. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 25 kt in the afternoon. Waves around 2 ft. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 15 to 20 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 25 kt. Waves around 2 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Waves 1 foot or less. .THU NIGHT...W winds around 5 kt with gusts up to 20 kt. Waves 1 foot or less. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .SAT NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. 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. $$ ANZ236-220430- Narragansett Bay- 1107 AM EST Tue Nov 21 2017 ...GALE WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 35 kt. Waves 3 to 5 ft. .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves 2 to 4 ft. Rain. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 25 kt in the afternoon. Waves 2 to 3 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Gusts up to 25 kt. Waves 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Waves 2 to 4 ft. .THU NIGHT...W winds 5 to 10 kt. Waves 2 to 4 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SAT NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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