Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 200516 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 116 AM EDT Thu Jun 20 2019 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-201800- 116 AM EDT Thu Jun 20 2019 .Synopsis for Massachusetts and Rhode Island coastal waters... Low clouds and fog along with light winds will persist through early Thursday. Some improvement during Thursday prior to a sweeping cold front with showers and thunderstorms along and ahead. High pressure and westerly winds for the weekend. 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. $$ ANZ250-201800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds around 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SAT...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. .SAT NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. .SUN...NW winds 10 to 15 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds around 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-201800- Massachusetts Bay and Ipswich Bay- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...N winds 10 to 15 kt, becoming NW 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Patchy fog. Showers. Vsby 1 to 3 NM. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .SUN...NW winds 10 to 15 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...SW winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms. 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. $$ ANZ231-201800- Cape Cod Bay- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. .SUN...NW winds 10 to 15 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-201800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...W winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .SAT...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds around 10 kt. Seas 2 to 4 ft. .MON...SW winds 5 to 10 kt. Seas 2 to 4 ft. .MON NIGHT...SW winds around 10 kt. Seas 3 to 5 ft. A chance of showers and tstms. 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. $$ ANZ255-201800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...W winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...W winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds around 10 kt. Seas 2 to 4 ft. .MON...SW winds 5 to 10 kt. Seas 2 to 4 ft. .MON NIGHT...SW winds around 10 kt. Seas 3 to 5 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-201800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...S winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...W winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Seas 4 to 6 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 5 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...W winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 3 ft. .MON...SW winds around 10 kt. Seas 3 to 4 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers and tstms. 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. $$ ANZ232-201800- Nantucket Sound- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...W winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers and tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. .SUN...W winds 10 to 15 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-201800- Vineyard Sound- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Showers and tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NW winds around 10 kt. Seas 2 to 3 ft. .SUN...W winds around 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. 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. $$ ANZ234-201800- Buzzards Bay- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Showers likely with tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NW winds around 10 kt. Seas around 2 ft. .SUN...W winds around 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-201800- Rhode Island Sound- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Seas 3 to 5 ft. Patchy fog. Showers and tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. A chance of showers. .SAT...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. .SAT NIGHT...NW winds around 10 kt. Seas 2 to 4 ft. .SUN...W winds around 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas 2 to 4 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. 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. $$ ANZ237-201800- Block Island Sound- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...NW winds around 10 kt. Seas 2 to 4 ft. .SUN...W winds around 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Seas 3 to 4 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-201800- Boston Harbor- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds around 5 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .THU...SE winds around 5 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds around 5 kt, becoming W after midnight. Waves 1 foot or less. Patchy fog. Showers and tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. Showers. Vsby 1 to 3 NM. .FRI NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .SAT...NW winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. .SAT NIGHT...NW winds around 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .SUN...NW winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .MON...SW winds around 5 kt. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers and tstms. 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. $$ ANZ236-201800- Narragansett Bay- 116 AM EDT Thu Jun 20 2019 .REST OF TONIGHT...SE winds around 5 kt. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. .SAT...NW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Waves 2 to 3 ft. .SAT NIGHT...NW winds around 10 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. .SUN...W winds around 10 kt. Waves 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. .MON...SW winds 5 to 10 kt. Waves 2 to 3 ft. .MON NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers and tstms. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston

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