Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 201413 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 1013 AM EDT Fri Jul 20 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-210315- 1013 AM EDT Fri Jul 20 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure shifting east over the weekend with a return of southerly flow into early next week, remaining breezy, ushering N warm, muggy air along with the likelihood of heavy rain and or thunderstorms, especially Saturday night into Sunday. Wet weather chances continue throughout the week along with sultry conditions. 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. $$ ANZ250-210315- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-210315- Massachusetts Bay and Ipswich Bay- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. A chance of showers. .MON...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. .TUE...S winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 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. $$ ANZ231-210315- Cape Cod Bay- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...E winds around 5 kt, becoming SE. Seas 1 foot or less. .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds around 10 kt. Seas around 2 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-210315- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...E winds 5 to 10 kt. Seas 2 to 3 ft. .TONIGHT...E winds around 5 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 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. $$ ANZ255-210315- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...E winds 5 to 10 kt. Seas 2 to 3 ft. .TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt, becoming SE 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 9 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 4 to 7 ft. .TUE...S winds around 10 kt. Seas 4 to 6 ft. .TUE NIGHT...S winds around 10 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-210315- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 2 to 3 ft. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 9 ft. Patchy fog. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .TUE...S winds 10 to 15 kt. Seas 5 to 6 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 4 to 5 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. $$ ANZ232-210315- Nantucket Sound- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 1 foot or less. .TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-210315- Vineyard Sound- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds around 5 kt, increasing to 5 to 10 kt. Seas around 2 ft. .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN...SE winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Patchy fog. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. .TUE...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds around 10 kt. Seas 2 to 4 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. $$ ANZ234-210315- Buzzards Bay- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...S winds around 5 kt, increasing to 5 to 10 kt. Seas 1 foot or less. .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. .MON...S winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely. .MON NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-210315- Rhode Island Sound- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds around 5 kt, increasing to 5 to 10 kt. Seas around 2 ft. .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...SE winds 15 to 20 kt, becoming S 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 5 to 8 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers likely. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 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. $$ ANZ237-210315- Block Island Sound- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. .MON...S winds 10 to 15 kt. Seas 4 to 6 ft. Showers likely. .MON NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers. .TUE...S winds around 10 kt. Seas 3 to 5 ft. A chance of showers. .TUE NIGHT...S winds around 10 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-210315- Boston Harbor- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...SE winds around 5 kt, increasing to around 10 kt. Waves 1 foot or less. .TONIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves 1 foot or less. .SAT...E winds 5 to 10 kt. Waves 1 foot or less. .SAT NIGHT...E winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN...SE winds around 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt. Waves around 2 ft. Showers likely. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .TUE...S winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-210315- Narragansett Bay- 1013 AM EDT Fri Jul 20 2018 .THIS AFTERNOON...S winds around 5 kt, increasing to 10 to 15 kt. Waves around 2 ft. .TONIGHT...SE winds 5 to 10 kt. Waves around 2 ft. .SAT...E winds 5 to 10 kt. Waves around 2 ft. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves 2 to 4 ft. Patchy fog. Showers. Vsby 1 NM or less. .SUN...SE winds 10 to 15 kt with gusts up to 25 kt. Waves 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 3 to 5 ft. Showers likely. .MON...S winds 5 to 10 kt. Waves 2 to 4 ft. Showers likely. .MON NIGHT...S winds around 10 kt. Waves 2 to 4 ft. A chance of showers. .TUE...S winds around 10 kt. Waves 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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