Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 190748 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 348 AM EDT Thu Jul 19 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-192030- 348 AM EDT Thu Jul 19 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... With high pressure shifting E into the weekend, will see return S 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. 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. $$ ANZ250-192030- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt, becoming NE this afternoon. Seas around 2 ft. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .FRI...SW winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...S winds 10 to 15 kt, becoming SE 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...E winds 10 to 15 kt. Seas 2 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 4 to 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-192030- Massachusetts Bay and Ipswich Bay- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt, becoming E this afternoon. Seas around 2 ft. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .FRI...SW winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 2 to 3 ft. .SAT...E winds 5 to 10 kt. Seas 2 to 4 ft. .SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ231-192030- Cape Cod Bay- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SE winds around 5 kt, becoming SW after midnight. Seas 1 foot or less. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-192030- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt. Seas 2 to 3 ft. .TONIGHT...E winds around 5 kt, becoming SW after midnight. Seas around 2 ft. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 2 to 4 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON...S winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .MON NIGHT...S 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. $$ ANZ255-192030- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 348 AM EDT Thu Jul 19 2018 .TODAY...NE winds 5 to 10 kt. Seas 2 to 3 ft. .TONIGHT...SE winds around 5 kt, becoming S after midnight. Seas around 2 ft. .FRI...SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds around 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers. .MON...S winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-192030- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 348 AM EDT Thu Jul 19 2018 .TODAY...NE winds 5 to 10 kt, becoming E this afternoon. Seas 2 to 3 ft. .TONIGHT...SW winds around 5 kt. Seas around 2 ft. .FRI...S winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. A chance of showers. .MON...S winds around 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 around 5 ft. A chance of showers. 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. $$ ANZ232-192030- Nantucket Sound- 348 AM EDT Thu Jul 19 2018 .TODAY...NE winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SE winds around 5 kt, becoming SW after midnight. Seas around 2 ft. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-192030- Vineyard Sound- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt, becoming E this afternoon. Seas around 2 ft. .TONIGHT...S winds around 5 kt. Seas around 2 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. .MON...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ234-192030- Buzzards Bay- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt, becoming E this afternoon. Seas around 2 ft. .TONIGHT...S winds around 5 kt. Seas around 2 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .MON...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-192030- Rhode Island Sound- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt, becoming SE this afternoon. Seas around 2 ft. .TONIGHT...S winds around 5 kt. Seas around 2 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. 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. A chance of showers. 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. $$ ANZ237-192030- Block Island Sound- 348 AM EDT Thu Jul 19 2018 .TODAY...NE winds 5 to 10 kt, becoming SE this afternoon. Seas around 2 ft. .TONIGHT...SW winds around 5 kt. Seas around 2 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. .MON...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-192030- Boston Harbor- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds around 5 kt, becoming E this afternoon. Waves 1 foot or less. .TONIGHT...S winds around 5 kt, becoming SW after midnight. Waves 1 foot or less. .FRI...SW winds around 5 kt, becoming SE in the afternoon. 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 around 2 ft. .SAT NIGHT...E winds 5 to 10 kt. Waves 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...SE winds 5 to 10 kt. Waves 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .MON...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. 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. $$ ANZ236-192030- Narragansett Bay- 348 AM EDT Thu Jul 19 2018 .TODAY...N winds 5 to 10 kt, becoming S this afternoon. Waves around 2 ft. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .FRI NIGHT...S winds 5 to 10 kt, becoming E after midnight. Waves around 2 ft. .SAT...E winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Waves 3 to 5 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds around 10 kt. Waves 2 to 3 ft. A chance of showers. .MON...S winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers. .MON NIGHT...S winds around 10 kt. Waves 2 to 3 ft. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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