Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 140207 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 1007 PM EDT Mon Aug 13 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-141515- 1007 PM EDT Mon Aug 13 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A warm front will slowly lift north over the waters tonight. A cold front will pass from the west Wed night. Weak high pressure will attempt to build over the region Thu. Another cold front will approach the waters from the west late Fri and Sat. 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. $$ ANZ250-141515- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. Patchy fog. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds around 5 kt. Seas around 2 ft. .FRI...SE winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT...SW winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-141515- Massachusetts Bay and Ipswich Bay- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Areas of fog. Areas of dense fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. Areas of fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds around 5 kt. Seas around 2 ft. Patchy fog. .WED NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. .THU...NW winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. .THU NIGHT...SE winds around 5 kt. Seas 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .FRI...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SAT 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. $$ ANZ231-141515- Cape Cod Bay- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds around 5 kt. Seas 1 foot or less. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...S winds 5 to 10 kt. Seas 1 foot or less. Areas of fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 1 foot or less. Patchy fog. .WED...SW winds around 5 kt. Seas 1 foot or less. .WED NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .THU...W winds 5 to 10 kt. Seas 1 foot or less. .THU NIGHT...S winds around 5 kt. Seas 1 foot or less. .FRI...S winds 5 to 10 kt with gusts up to 20 kt. Seas 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .FRI NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-141515- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers with a slight chance of tstms. A slight chance of showers with isolated tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .TUE...S winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...S winds around 5 kt. Seas 2 to 3 ft. .FRI...S 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 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. 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. $$ ANZ255-141515- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...SW winds 5 to 10 kt. Seas 3 to 4 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .TUE NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. .WED NIGHT...W winds 10 to 15 kt. Seas 3 to 5 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .FRI...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-141515- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...S winds 5 to 10 kt. Seas around 4 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE...SW winds 5 to 10 kt. Seas around 4 ft. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 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. $$ ANZ232-141515- Nantucket Sound- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-141515- Vineyard Sound- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog. Vsby 1 NM or less. .TUE NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...W 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. $$ ANZ234-141515- Buzzards Bay- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...S winds 5 to 10 kt. Seas around 2 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-141515- Rhode Island Sound- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...S winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt with gusts up to 20 kt, becoming SW 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 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. $$ ANZ237-141515- Block Island Sound- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Areas of fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. .WED...W winds 5 to 10 kt. Seas 2 to 4 ft. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .THU...NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT...SW winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-141515- Boston Harbor- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...E winds 5 to 10 kt. Waves 1 foot or less. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...SE winds around 5 kt. Waves 1 foot or less. Areas of fog. A chance of showers and tstms. Vsby 1 NM or less. .TUE NIGHT...SW winds around 5 kt. Waves 1 foot or less. .WED...W winds around 5 kt. Waves 1 foot or less. A chance of showers. .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...SE winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .FRI...SE winds around 5 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds around 5 kt. Waves 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .SAT...SW winds around 5 kt. Waves 1 foot or less. A chance of showers. .SAT NIGHT...NW winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 NM. 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. $$ ANZ236-141515- Narragansett Bay- 1007 PM EDT Mon Aug 13 2018 .OVERNIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. Areas of fog. A chance of showers. A slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TUE...S winds 5 to 10 kt. Waves 2 to 3 ft. Areas of fog. Vsby 1 NM or less. .TUE NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt. Waves 2 to 3 ft. .WED NIGHT...W winds 5 to 10 kt. Waves around 2 ft. .THU...NW winds around 5 kt, becoming SW in the afternoon. Waves around 2 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .FRI...S winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .FRI NIGHT...SW winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .SAT NIGHT...W winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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