Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 181417 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 1017 AM EDT Tue Sep 18 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-190315- 1017 AM EDT Tue Sep 18 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Remnants of Florence will sweep across the waters today. Winds may approach gale force with the passage of the system. High pressure will bring north to northeast winds Wed and Thu. A warm front will push N of the waters Thu night, with S-SW winds possibly approach gale force Fri. A cold front will push across the waters early 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. $$ ANZ250-190315- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers with isolated tstms. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TONIGHT...NW winds 5 to 10 kt, becoming NE 15 to 20 kt after midnight. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 NM. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 4 to 6 ft. .THU NIGHT...E winds 5 to 10 kt, becoming SE 10 to 15 kt after midnight. Seas 3 to 5 ft. .FRI...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-190315- Massachusetts Bay and Ipswich Bay- 1017 AM EDT Tue Sep 18 2018 .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Showers. Isolated tstms, then a chance of tstms. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TONIGHT...NW winds 5 to 10 kt, becoming NE 15 to 20 kt after midnight. Seas 2 to 4 ft. Patchy fog. A chance of drizzle. Vsby 1 NM or less. .WED...N winds 15 to 20 kt, becoming NE 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of drizzle. Vsby 1 to 3 NM. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NE winds 5 to 10 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. $$ ANZ231-190315- Cape Cod Bay- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers with isolated tstms, then showers with a chance of tstms with vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming NE with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers and drizzle. Vsby 1 NM or less. .WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of drizzle. Vsby 1 to 3 NM. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-190315- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers with isolated tstms. Patchy fog. Vsby 1 NM or less. .TONIGHT...W winds 10 to 15 kt, becoming N after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 7 ft. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 5 to 10 kt. Seas 4 to 6 ft. .FRI...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 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. $$ ANZ255-190315- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers. Isolated tstms, then a chance of tstms. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt, becoming N after midnight. Gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. .FRI...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-190315- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely with isolated tstms. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming N after midnight. Seas 4 to 6 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU NIGHT...SE winds around 10 kt. Seas 2 to 4 ft. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NE 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. $$ ANZ232-190315- Nantucket Sound- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...S winds 10 to 15 kt, becoming SW 15 to 20 kt. Gusts up to 30 kt. Seas 2 to 3 ft. Showers with isolated tstms. Patchy fog. Vsby 1 NM or less. .TONIGHT...W winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-190315- Vineyard Sound- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers with isolated tstms. Patchy fog. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt with gusts up to 20 kt, becoming N after midnight. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. .THU NIGHT...E winds around 10 kt. Seas 1 foot or less. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NE winds around 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. $$ ANZ234-190315- Buzzards Bay- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Isolated tstms. Showers likely, then showers. Patchy fog. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .THU...NE winds 5 to 10 kt. Seas 1 foot or less. .THU NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-190315- Rhode Island Sound- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers. Isolated tstms, then a chance of tstms. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming N after midnight. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...NE winds around 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. $$ ANZ237-190315- Block Island Sound- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers with isolated tstms. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-190315- Boston Harbor- 1017 AM EDT Tue Sep 18 2018 .THIS AFTERNOON...SW winds 5 to 10 kt with gusts up to 25 kt. Waves around 2 ft. Showers. Isolated tstms, then a chance of tstms. Patchy fog. Vsby 1 to 3 NM. .TONIGHT...NW winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 2 ft. Patchy fog. Showers likely with a chance of drizzle. Vsby 1 to 3 NM. .WED...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Waves around 2 ft. Patchy fog. A chance of drizzle. Vsby 1 to 3 NM. .WED NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. .THU...NE winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SAT...N winds 5 to 10 kt. Waves around 2 ft. .SAT 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. $$ ANZ236-190315- Narragansett Bay- 1017 AM EDT Tue Sep 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Showers with isolated tstms. Patchy fog. Vsby 1 to 3 NM. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves 2 to 3 ft. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .WED...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. .THU...NE winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SAT...N winds 5 to 10 kt. Waves around 2 ft. .SAT NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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