Coastal Waters Forecast
Issued by NWS Boston, MA

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733 FZUS51 KBOX 212316 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 716 PM EDT Fri Jul 21 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-221200- 716 PM EDT Fri Jul 21 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure will move overhead tonight and on Saturday. Approaching warm front on Sunday with a coastal low pressure system moving through the waters on Monday and Tuesday. High pressure builds over the waters from the west on Wednesday. Another cold front will cross the waters Thursday night and Friday morning. 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. $$ ANZ250-221200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EDT Fri Jul 21 2017 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. .SAT...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 5 to 10 kt, becoming NE 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON...E winds around 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Showers likely. .MON NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. A chance of showers. .TUE...NE winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...N winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .WED...N winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-221200- Massachusetts Bay and Ipswich Bay- 716 PM EDT Fri Jul 21 2017 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. .SAT...W winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas around 2 ft. Showers likely with a chance of tstms. .MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...N winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .WED...NE winds 5 to 10 kt. Seas around 2 ft. .WED NIGHT...S 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. $$ ANZ231-221200- Cape Cod Bay- 716 PM EDT Fri Jul 21 2017 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. .SAT...NW winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of showers. .MON NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .WED...NE winds 5 to 10 kt. Seas around 2 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-221200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EDT Fri Jul 21 2017 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. .SAT...NW winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt after midnight. Seas around 2 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SUN NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE NIGHT...N winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .WED...NE winds 5 to 10 kt. Seas 2 to 4 ft. .WED NIGHT...S 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. $$ ANZ255-221200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EDT Fri Jul 21 2017 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Patchy fog after midnight with vsby 1 to 3 NM. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds around 5 kt, becoming SE after midnight. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SUN...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .MON...SE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...N winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...N winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .WED...NE winds 5 to 10 kt. Seas 2 to 4 ft. .WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-221200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EDT Fri Jul 21 2017 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Patchy fog this evening. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming E 10 to 15 kt after midnight. Seas 2 to 3 ft. A chance of showers. .SUN...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 4 ft. A chance of showers. .MON...E winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas 4 to 5 ft. A chance of showers. .TUE...N winds around 10 kt. Seas 4 to 5 ft. .TUE NIGHT...NE winds around 10 kt. Seas 3 to 4 ft. .WED...E winds around 10 kt. Seas 2 to 3 ft. .WED NIGHT...S 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. $$ ANZ232-221200- Nantucket Sound- 716 PM EDT Fri Jul 21 2017 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft. .SAT...NW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds around 5 kt, becoming SE 10 to 15 kt after midnight. Seas 1 foot or less. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .WED...NE winds 5 to 10 kt. Seas around 2 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-221200- Vineyard Sound- 716 PM EDT Fri Jul 21 2017 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Seas 1 foot or less. A chance of showers. .SUN...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .SUN NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of showers. .MON...E winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. A chance of showers. .TUE...NE winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .WED...E winds around 10 kt. Seas around 2 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 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. $$ ANZ234-221200- Buzzards Bay- 716 PM EDT Fri Jul 21 2017 .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming W after midnight. Seas 1 foot or less. .SAT...W winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE...NE winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...N winds 5 to 10 kt. Seas around 2 ft. .WED...E winds 5 to 10 kt. Seas 1 foot or less. .WED NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-221200- Rhode Island Sound- 716 PM EDT Fri Jul 21 2017 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...S 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. $$ ANZ237-221200- Block Island Sound- 716 PM EDT Fri Jul 21 2017 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. A chance of showers. .SUN...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 4 ft. .SUN NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers. .MON...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. A chance of showers. .TUE...N winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-221200- Boston Harbor- 716 PM EDT Fri Jul 21 2017 .TONIGHT...W winds around 5 kt. Seas 1 foot or less. .SAT...NW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. .SAT NIGHT...E winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...E winds around 5 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...NE winds 5 to 10 kt. Seas 1 foot or less. Showers likely with a chance of tstms. .MON NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...N winds around 5 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds around 5 kt. Seas 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .WED...NE winds around 5 kt. Seas 1 foot or less. .WED NIGHT...S winds around 5 kt. Seas 1 foot or less. 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. $$ ANZ236-221200- Narragansett Bay- 716 PM EDT Fri Jul 21 2017 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. .SAT...NW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt, becoming NE with gusts up to 20 kt after midnight. Seas 1 foot or less. A chance of showers. .SUN...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...N winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .WED...SE winds around 5 kt. Seas 1 foot or less. .WED NIGHT...S winds around 5 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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