Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 210123 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 923 PM EDT Sun Aug 20 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-211415- 923 PM EDT Sun Aug 20 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres will remain over the waters through Mon, then will move offshore Tue, allowing a cold front to approach Wed. Large high pres will build over the region Thu and Fri. 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. $$ ANZ250-211415- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers and tstms. .WED...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 4 ft. A chance of showers and tstms. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-211415- Massachusetts Bay and Ipswich Bay- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Showers and tstms likely. .WED NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .THU...W winds around 5 kt. Seas 1 foot or less. .THU NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...W winds around 5 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. 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. $$ ANZ231-211415- Cape Cod Bay- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. A chance of showers and tstms. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. A chance of showers and tstms. .WED NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .THU...N winds 5 to 10 kt. Seas 1 foot or less. .THU NIGHT...W winds around 5 kt. Seas 1 foot or less. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-211415- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...W winds around 5 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .WED...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers and tstms. .WED NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. A chance of showers. .THU...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. 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. $$ ANZ255-211415- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. .WED...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers and tstms. .WED NIGHT...W winds around 10 kt, becoming NW after midnight. Seas 2 to 4 ft. A chance of showers. .THU...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-211415- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds around 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. .TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers and tstms. .WED...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers and tstms. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 4 ft. .THU...NW winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. 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. $$ ANZ232-211415- Nantucket Sound- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...NW winds around 5 kt. Seas around 2 ft. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers and tstms. .WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers and tstms. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. A chance of showers. .THU...N winds 5 to 10 kt. Seas 1 foot or less. .THU NIGHT...NE winds around 5 kt. Seas 1 foot or less. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-211415- Vineyard Sound- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...NW winds around 5 kt. Seas around 2 ft. .MON...W winds around 5 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .TUE...SW 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. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers and tstms. .WED...SW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 4 ft. A chance of showers and tstms. .WED NIGHT...W winds around 10 kt, becoming NW after midnight. Seas around 2 ft. A chance of showers. .THU...W winds 5 to 10 kt. Seas 1 foot or less. .THU NIGHT...W winds around 5 kt. Seas 1 foot or less. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. 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. $$ ANZ234-211415- Buzzards Bay- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...NW winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers and tstms. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. A chance of showers. .THU...W winds 5 to 10 kt. Seas 1 foot or less. .THU NIGHT...W winds around 5 kt. Seas 1 foot or less. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NE winds around 5 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-211415- Rhode Island Sound- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers and tstms. .WED...SW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. A chance of showers and tstms. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .THU...W winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. 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. $$ ANZ237-211415- Block Island Sound- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers and tstms. .WED...SW winds 15 to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. A chance of showers and tstms. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .THU...W winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .FRI...NE winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-211415- Boston Harbor- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...W winds around 5 kt. Waves 1 foot or less. .MON...SW winds around 5 kt. Waves 1 foot or less. .MON NIGHT...SW winds around 5 kt. Waves 1 foot or less. .TUE...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 1 foot or less. .TUE NIGHT...SW winds around 10 kt with gusts up to 20 kt. Waves 1 foot or less. A chance of showers and tstms. .WED...SW winds 5 to 10 kt. Waves 1 foot or less. Showers and tstms likely. .WED NIGHT...W winds around 5 kt. Waves 1 foot or less. .THU...NW winds around 5 kt. Waves 1 foot or less. .THU NIGHT...NW winds around 5 kt. Waves 1 foot or less. .FRI...NE winds around 5 kt. Waves 1 foot or less. .FRI NIGHT...W winds around 5 kt. Waves 1 foot or less. Winds and waves higher in and near tstms. 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. $$ ANZ236-211415- Narragansett Bay- 923 PM EDT Sun Aug 20 2017 .OVERNIGHT...NW winds around 5 kt. Waves 1 foot or less. .MON...W winds around 5 kt, becoming SW with gusts up to 20 kt in the afternoon. Waves around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers and tstms. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Waves 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. .THU...W winds around 5 kt. Waves 1 foot or less. .THU NIGHT...W winds around 5 kt. Waves 1 foot or less. .FRI...NE winds around 5 kt. Waves 1 foot or less. .FRI NIGHT...NE winds around 5 kt. Waves 1 foot or less. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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