Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000 FZUS51 KBOX 181935 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 335 PM EDT Tue Jun 18 2019 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-190815- 335 PM EDT Tue Jun 18 2019 .Synopsis for Massachusetts and Rhode Island coastal waters... Stalled frontal boundary S of Long Island will be the focus for a series of weak low pressure waves and bouts of showers and thunder- storms through Friday. Generally an easterly wind throughout with boating conditions below small craft advisory levels. High pressure into the weekend with westerly winds. 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. $$ ANZ250-190815- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 335 PM EDT Tue Jun 18 2019 .TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A slight chance of rain this evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...E winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...N winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. .SUN...NW winds 10 to 15 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-190815- Massachusetts Bay and Ipswich Bay- 335 PM EDT Tue Jun 18 2019 .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A slight chance of rain this evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...SE winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...E winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...N winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .FRI NIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 4 ft. .SAT...NW winds 10 to 15 kt. Seas 2 to 3 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. .SUN...NW winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 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. $$ ANZ231-190815- Cape Cod Bay- 335 PM EDT Tue Jun 18 2019 .TONIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A chance of rain. Vsby 1 NM or less. .WED...E winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...E winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. .SUN...NW winds 10 to 15 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-190815- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 335 PM EDT Tue Jun 18 2019 .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of rain. Vsby 1 NM or less. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...E winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...W winds 5 to 10 kt, becoming N in the afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...NW winds 10 to 15 kt. 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 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. $$ ANZ255-190815- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 335 PM EDT Tue Jun 18 2019 .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy dense fog. A chance of rain and tstms. Vsby 1 NM or less. .WED...NE winds around 5 kt, becoming SE in the afternoon. Seas around 3 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...W winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 4 to 6 ft. Showers likely. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 4 to 7 ft. .SAT...W winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...W winds around 10 kt. Seas 3 to 5 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-190815- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 335 PM EDT Tue Jun 18 2019 .TONIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Patchy dense fog. A chance of rain. A chance of tstms this evening. Vsby 1 NM or less. .WED...NE winds around 5 kt, becoming SE in the afternoon. Seas around 3 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. 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. Vsby 1 NM or less. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers likely. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 5 to 7 ft. .SAT...W winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...NW winds around 10 kt. Seas 3 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 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. $$ ANZ232-190815- Nantucket Sound- 335 PM EDT Tue Jun 18 2019 .TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of rain this evening. Rain likely after midnight. Vsby 1 NM or less. .WED...E winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds around 5 kt. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SE winds around 5 kt. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...W winds around 10 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-190815- Vineyard Sound- 335 PM EDT Tue Jun 18 2019 .TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A chance of rain this evening. Rain likely after midnight. Vsby 1 NM or less. .WED...NE winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds around 5 kt. Seas around 2 ft. Patchy fog. A 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...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .FRI NIGHT...NW winds around 10 kt. Seas 2 to 4 ft. .SAT...NW winds around 10 kt. Seas 2 to 4 ft. .SAT NIGHT...NW winds around 10 kt. Seas 2 to 3 ft. .SUN...W winds around 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 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. $$ ANZ234-190815- Buzzards Bay- 335 PM EDT Tue Jun 18 2019 .TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A chance of rain this evening, then rain likely after midnight. Vsby 1 NM or less. .WED...NE winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds around 5 kt. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...E winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .FRI NIGHT...NW winds around 10 kt. Seas 2 to 4 ft. .SAT...NW winds around 10 kt. Seas 2 to 3 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-190815- Rhode Island Sound- 335 PM EDT Tue Jun 18 2019 .TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy dense fog. Rain likely this evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NE winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. Patchy fog. A 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 5 to 10 kt. Seas 3 to 5 ft. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .FRI NIGHT...NW winds around 10 kt. Seas 4 to 6 ft. .SAT...W winds around 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NW winds 5 to 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. 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. $$ ANZ237-190815- Block Island Sound- 335 PM EDT Tue Jun 18 2019 .TONIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Rain likely with a chance of tstms this evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NE winds around 5 kt, becoming SE around 5 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .FRI NIGHT...NW winds around 10 kt. Seas 3 to 5 ft. .SAT...NW winds around 10 kt. Seas 3 to 5 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...W winds around 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-190815- Boston Harbor- 335 PM EDT Tue Jun 18 2019 .TONIGHT...SE winds around 5 kt. Waves 1 foot or less. Patchy fog. A chance of rain. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .WED...E winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .THU...E winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .THU NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. Showers with a chance of tstms. Some tstms may produce heavy rainfall. .FRI...N winds 5 to 10 kt. Waves around 2 ft. Showers likely. .FRI NIGHT...NW winds around 10 kt. Waves around 2 ft. .SAT...NW winds around 10 kt. Waves around 2 ft. .SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .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. 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. $$ ANZ236-190815- Narragansett Bay- 335 PM EDT Tue Jun 18 2019 .TONIGHT...E winds around 5 kt. Waves around 2 ft. Patchy fog. A chance of rain this evening, then rain likely after midnight. Vsby 1 NM or less. .WED...NE winds around 5 kt, becoming SE in the afternoon. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .WED NIGHT...E winds around 5 kt. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...E winds around 5 kt, becoming SE in the afternoon. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...S winds 5 to 10 kt. Waves 2 to 4 ft. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .FRI...N winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. Showers likely. .FRI NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. .SAT...NW winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SAT NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. .SUN...W winds 5 to 10 kt. Waves around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.