Coastal Waters Forecast
Issued by NWS Boston, MA

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873 FZUS51 KBOX 201949 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 349 PM EDT Wed Jun 20 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-210830- 349 PM EDT Wed Jun 20 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A low pres system will emerge off New Jersey overnight and track S of Long Island Thursday morning. The system will bring showers and patchy fog from Cape Cod southward through mid day on Thu. High pres returns with dry conditions Thu afternoon into Fri. Low pres and an associated warm front will approach late Fri night, bringing showers Sat into Sat night. Showers may linger as a cold front approaches Sun. 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. $$ ANZ250-210830- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. .THU...W winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. .THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. .FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON...NW winds around 10 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-210830- Massachusetts Bay and Ipswich Bay- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .THU...NW winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .FRI...E winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Showers likely with a chance of tstms. .SUN...SW winds around 5 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON...NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON 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. $$ ANZ231-210830- Cape Cod Bay- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. A slight chance of showers after midnight. .THU...SW winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less. A chance of showers. .THU NIGHT...E winds around 5 kt. Seas 1 foot or less. .FRI...E winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas 1 foot or less. Showers likely with a chance of tstms. .SUN...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .MON...W winds 5 to 10 kt. Seas around 2 ft. Showers likely. .MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-210830- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. A slight chance of showers after midnight with vsby 1 to 3 NM. .THU...SW winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. .SAT...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 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. $$ ANZ255-210830- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers after midnight with vsby 1 to 3 NM. .THU...S winds around 5 kt, becoming E in the afternoon. Seas 2 to 3 ft. Showers likely. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. A chance of showers. .SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Showers likely. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-210830- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of showers after midnight. .THU...E winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Showers. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 3 ft. .FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of showers. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Showers likely with a chance of tstms. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 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. $$ ANZ232-210830- Nantucket Sound- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers after midnight. .THU...SW winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. Showers. .THU NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. .FRI...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. .MON...W winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...N winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-210830- Vineyard Sound- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Showers likely after midnight. .THU...SW winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Showers. .THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. .FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. .MON...W winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...N 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. $$ ANZ234-210830- Buzzards Bay- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. A chance of showers after midnight. .THU...SW winds around 5 kt, becoming SE around 5 kt in the afternoon. Seas 1 foot or less. Showers. .THU NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. .FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .MON...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-210830- Rhode Island Sound- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Showers likely after midnight. .THU...E winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. Showers. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT...E winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely with a chance of tstms. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 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. $$ ANZ237-210830- Block Island Sound- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Showers likely after midnight. .THU...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Showers. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...SE winds around 10 kt, becoming S after midnight. Seas 2 to 4 ft. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely with a chance of tstms. .MON...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-210830- Boston Harbor- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .THU...NW winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less. .THU NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. .FRI...E winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. .SAT...E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT NIGHT...E winds around 5 kt. Waves 1 foot or less. Showers likely with a chance of tstms. .SUN...W winds around 5 kt. Waves 1 foot or less. A chance of showers. .SUN NIGHT...W winds around 5 kt. Waves 1 foot or less. A chance of showers. .MON...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT...N winds 5 to 10 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. $$ ANZ236-210830- Narragansett Bay- 349 PM EDT Wed Jun 20 2018 .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Showers likely after midnight. .THU...E winds around 5 kt, becoming SE in the afternoon. Waves around 2 ft. Showers likely. .THU NIGHT...E winds around 5 kt. Waves around 2 ft. .FRI...E winds 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...E winds 5 to 10 kt. Waves around 2 ft. .SAT...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Waves around 2 ft. Showers likely with a chance of tstms. .SUN...SW winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .MON...NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .MON NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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