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Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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691 FZUS51 KBOX 210745 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 345 AM EDT Wed Aug 21 2019 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-212015- 345 AM EDT Wed Aug 21 2019 .Synopsis for Massachusetts and Rhode Island coastal waters... A warm front will move north this morning drawing warm and very humid air over the waters. This will bring patchy fog as well as showers and scattered thunderstorms today through Thursday. A cold front then sweeps across the waters sometime Thursday night into early Friday morning. Dry weather and good vsby follows for Friday into 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. $$ ANZ250-212015- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 4 ft. A chance of showers with a slight chance of tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .THU NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .FRI...W winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .SAT...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-212015- Massachusetts Bay and Ipswich Bay- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. A chance of showers. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .THU NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...W winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 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. $$ ANZ231-212015- Cape Cod Bay- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. A chance of showers with a slight chance of tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .THU...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. A chance of showers. .FRI...NW winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .FRI NIGHT...W winds around 5 kt, becoming N after midnight. Seas around 2 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-212015- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 345 AM EDT Wed Aug 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH THURSDAY EVENING... .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. .SAT...NE winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 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. $$ ANZ255-212015- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 345 AM EDT Wed Aug 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH THURSDAY EVENING... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. Vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. .SAT...NE winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. .SUN...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-212015- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 345 AM EDT Wed Aug 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH THURSDAY EVENING... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 4 ft. A slight chance of tstms. A slight chance of showers this morning, then a chance of showers this afternoon. Some tstms may produce gusty winds and heavy rainfall. .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. .SAT...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...NE winds 15 to 20 kt with gusts up to 25 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. $$ ANZ232-212015- Nantucket Sound- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. A chance of showers with a slight chance of tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall this afternoon. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT...W winds around 5 kt, becoming N after midnight. Seas around 2 ft. .SAT...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SUN...NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-212015- Vineyard Sound- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. A slight chance of tstms. A slight chance of showers this morning, then a chance of showers this afternoon. Some tstms may produce gusty winds and heavy rainfall. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .THU...SW winds around 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI...NW winds around 5 kt, becoming W in the afternoon. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-212015- Buzzards Bay- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. A slight chance of tstms. A slight chance of showers this morning, then a chance of showers this afternoon. Some tstms may produce gusty winds and heavy rainfall. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. .THU...SW winds around 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. A chance of showers. .FRI...W winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-212015- Rhode Island Sound- 345 AM EDT Wed Aug 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH THURSDAY MORNING... .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. A slight chance of showers this morning, then a chance of showers this afternoon. A slight chance of tstms. Some tstms may produce gusty winds and heavy rainfall. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. A chance of showers. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 4 ft. A chance of showers. .FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-212015- Block Island Sound- 345 AM EDT Wed Aug 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH THURSDAY MORNING... .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. A chance of showers with a slight chance of tstms. Some tstms may produce gusty winds and heavy rainfall. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI...N winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...N winds 5 to 10 kt, becoming E. Seas around 2 ft. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-212015- Boston Harbor- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Waves around 2 ft. A slight chance of showers with isolated tstms this morning, then showers likely with a chance of tstms this afternoon. Some tstms may produce gusty winds and heavy rainfall. .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .THU...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .THU NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .FRI...W winds around 5 kt. Waves 1 foot or less. .FRI NIGHT...NW winds around 5 kt. Waves 1 foot or less. .SAT THROUGH SUN...NE 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. $$ ANZ236-212015- Narragansett Bay- 345 AM EDT Wed Aug 21 2019 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Waves around 2 ft. A chance of showers with a slight chance of tstms. Some tstms may produce gusty winds and heavy rainfall. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 2 to 4 ft. A chance of showers. .THU...SW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 2 to 3 ft. A chance of showers. .FRI...NW winds 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. .SAT THROUGH SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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
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