Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 170739 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 339 AM EDT Fri Aug 17 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-172015- 339 AM EDT Fri Aug 17 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A stalled front across the waters will push NE this afternoon. Low pres will move across northern New England Saturday, dragging its associated cold front across the waters. High pres will follow, building over northern New England and Nova Scotia on Sun and Mon. The high will retreat NE on Tue. 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. $$ ANZ250-172015- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds 5 to 10 kt, becoming SE 10 to 15 kt this afternoon. Seas around 2 ft. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. A chance of showers. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...E winds 5 to 10 kt. Seas 3 to 4 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-172015- Massachusetts Bay and Ipswich Bay- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds 5 to 10 kt. Seas 1 foot or less. A slight chance of showers and tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon with vsby 1 NM or less. .TONIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Seas around 2 ft. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. .TUE...E winds around 5 kt. Seas 2 to 4 ft. .TUE 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. $$ ANZ231-172015- Cape Cod Bay- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds around 5 kt, becoming SE this afternoon. Seas 1 foot or less. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SAT NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. .TUE...NE winds around 5 kt. Seas around 2 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-172015- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds 5 to 10 kt, becoming S this afternoon. Seas 2 to 3 ft. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW 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. .SAT NIGHT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .TUE...NE winds 5 to 10 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 5 to 10 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. $$ ANZ255-172015- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 339 AM EDT Fri Aug 17 2018 .TODAY...S winds 5 to 10 kt, becoming SW 10 to 15 kt this afternoon. Seas 2 to 3 ft. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...W winds 10 to 15 kt, becoming N with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Showers likely. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .TUE...NE winds 5 to 10 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-172015- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 339 AM EDT Fri Aug 17 2018 .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas around 2 ft. .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW 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. .SAT NIGHT...W winds 10 to 15 kt, becoming NE with gusts up to 20 kt after midnight. Seas 3 to 4 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE...E winds 5 to 10 kt. Seas 2 to 4 ft. .TUE 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. $$ ANZ232-172015- Nantucket Sound- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds around 5 kt, becoming S this afternoon. Seas 1 foot or less. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .SUN NIGHT...NE winds around 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-172015- Vineyard Sound- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds around 5 kt, becoming S 10 to 15 kt this afternoon. Seas around 2 ft. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...E winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...S winds 5 to 10 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. $$ ANZ234-172015- Buzzards Bay- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds around 5 kt, becoming S 10 to 15 kt this afternoon. Seas 1 foot or less. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight. Gusts up to 20 kt. Seas around 2 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE...E winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-172015- Rhode Island Sound- 339 AM EDT Fri Aug 17 2018 .TODAY...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt this afternoon. Seas around 2 ft. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...NW winds 10 to 15 kt, becoming NE with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE...E winds 5 to 10 kt. Seas 2 to 4 ft. .TUE 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. $$ ANZ237-172015- Block Island Sound- 339 AM EDT Fri Aug 17 2018 .TODAY...SW winds around 5 kt, becoming S 10 to 15 kt with gusts up to 20 kt this afternoon. Seas around 2 ft. A slight chance of showers and tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers and tstms. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. .TUE...E winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-172015- Boston Harbor- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds 5 to 10 kt. Waves 1 foot or less. A slight chance of showers and tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon with vsby 1 NM or less. .TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. .SAT...SW winds 5 to 10 kt, becoming NW in the afternoon. Waves 1 foot or less. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .SUN...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .MON...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .MON NIGHT...N winds around 5 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .TUE...E winds around 5 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .TUE NIGHT...S winds around 5 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. $$ ANZ236-172015- Narragansett Bay- 339 AM EDT Fri Aug 17 2018 .TODAY...E winds around 5 kt, becoming S this afternoon. Waves 1 foot or less. A slight chance of showers and tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...SW winds around 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves around 2 ft. A chance of showers and tstms. .SUN...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .SUN NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. A chance of showers. .MON...NE winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .MON NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. .TUE...E winds around 5 kt. Waves around 2 ft. .TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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