Coastal Waters Forecast
Issued by NWS Boston, MA

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861 FZUS51 KBOX 202316 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 716 PM EDT Thu Jul 20 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-211200- 716 PM EDT Thu Jul 20 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... A weak cold front will cross the waters late tonight into Fri before washing out. High pressure will move overhead 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. 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. $$ ANZ250-211200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Scattered showers with isolated tstms this evening. .FRI...W winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt, becoming NW after midnight. Seas around 2 ft. .SAT...W winds around 5 kt, becoming S 10 to 15 kt in the afternoon. Seas around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. A chance of showers. .SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds around 10 kt with gusts up to 30 kt. Seas 5 to 8 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-211200- Massachusetts Bay and Ipswich Bay- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. Scattered showers with isolated tstms this evening. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .SAT...W winds around 5 kt, becoming S 10 to 15 kt in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. A chance of showers. .SUN...NE winds around 5 kt, becoming E in the afternoon. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 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. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 30 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. $$ ANZ231-211200- Cape Cod Bay- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. Isolated showers and tstms. .FRI...SW winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 1 foot or less. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. A chance of showers. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less. A chance of showers. .SUN NIGHT...E winds around 5 kt. Seas 1 foot or less. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .MON NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 25 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-211200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Isolated showers and tstms. Patchy fog after midnight. Vsby 1 NM or less. .FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...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. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds around 10 kt with gusts up to 30 kt. Seas 4 to 7 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. $$ ANZ255-211200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Isolated showers and tstms. Vsby 1 NM or less. .FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON...N winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds around 10 kt with gusts up to 25 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-211200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Isolated showers and tstms. Vsby 1 to 3 NM. .FRI...W winds 5 to 10 kt, becoming SW 15 to 20 kt in the afternoon. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Seas 2 to 4 ft. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...NE winds around 10 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. $$ ANZ232-211200- Nantucket Sound- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt, becoming W around 5 kt after midnight. Seas around 2 ft. Isolated showers and tstms. Patchy fog after midnight. Vsby 1 NM or less. .FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .SUN...E winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .SUN NIGHT...SE winds around 5 kt. Seas around 2 ft. Showers likely. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-211200- Vineyard Sound- 716 PM EDT Thu Jul 20 2017 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. A slight chance of showers and tstms. .FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. 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. Seas 1 foot or less. A chance of showers. .SUN...E winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. A chance of showers. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds around 10 kt with gusts up to 25 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. $$ ANZ234-211200- Buzzards Bay- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A slight chance of showers and tstms. .FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas 1 foot or less. A chance of showers. .SUN...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. A chance of showers. .SUN NIGHT...E winds around 5 kt. Seas around 2 ft. Showers likely with a chance of tstms. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-211200- Rhode Island Sound- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. A slight chance of showers and tstms. .FRI...W winds 5 to 10 kt, becoming SW 15 to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SW winds 15 to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...W winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...E 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 25 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .TUE 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. $$ ANZ237-211200- Block Island Sound- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. A slight chance of tstms. Scattered showers this evening, then a slight chance of showers after midnight. .FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Vsby 1 to 3 NM. .MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-211200- Boston Harbor- 716 PM EDT Thu Jul 20 2017 .TONIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Scattered showers with isolated tstms this evening. .FRI...SW winds around 5 kt. Seas 1 foot or less. .FRI NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SAT...W winds around 5 kt, becoming S 10 to 15 kt in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. A chance of showers. .SUN...E winds around 5 kt. Seas 1 foot or less. A chance of showers. .SUN NIGHT...NE winds around 5 kt. Seas 1 foot or less. Showers likely. .MON...NE winds around 5 kt. Seas 1 foot or less. A chance of showers. .MON NIGHT...NE winds around 5 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds around 5 kt with gusts up to 25 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...N 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. $$ ANZ236-211200- Narragansett Bay- 716 PM EDT Thu Jul 20 2017 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. A slight chance of showers and tstms. .FRI...W winds around 5 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SAT...W winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas 1 foot or less. A chance of showers. .SUN...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less. A chance of showers. .SUN NIGHT...E winds around 5 kt. Seas 1 foot or less. Showers likely with a chance of tstms. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .MON NIGHT...NE winds around 5 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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