Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 211945 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 345 PM EDT Mon Aug 21 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-220815- 345 PM EDT Mon Aug 21 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres will move offshore of the mid-Atlantic coast tonight and Tue. A cold front will follow and approach the waters from the west late Tue night, then sweep across the waters Wed morning. Large high pres will build east from the Great Lakes Thu through 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. $$ ANZ250-220815- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...SW winds 5 to 10 kt with gusts up to 20 kt, becoming S 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. .FRI...N winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-220815- Massachusetts Bay and Ipswich Bay- 345 PM EDT Mon Aug 21 2017 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...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. .WED NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .THU...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. .THU NIGHT...S winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. .FRI...N winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...N winds around 5 kt. Seas 1 foot or less. .SAT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...NE winds around 5 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. $$ ANZ231-220815- Cape Cod Bay- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .WED NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .THU...NW winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less. .THU NIGHT...S winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. .FRI...N winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. .SAT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-220815- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. .TUE...SW winds 5 to 10 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt with gusts up to 30 kt, diminishing to 5 to 10 kt with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. A chance of showers. .THU...NW winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...S winds around 5 kt, becoming NW after midnight. Seas around 2 ft. .FRI...N winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. 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. $$ ANZ255-220815- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. .TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 30 kt, diminishing to around 10 kt with gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. A chance of showers. .THU...NW winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. .FRI...N winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-220815- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A slight chance of showers with isolated tstms after midnight. Some tstms may produce heavy rainfall after midnight. .TUE...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 5 to 10 kt in the afternoon. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .FRI...N winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...NE 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. $$ ANZ232-220815- Nantucket Sound- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .THU...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 1 foot or less. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .FRI...N winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. .SAT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-220815- Vineyard Sound- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .WED NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .FRI...N winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...NE 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. $$ ANZ234-220815- Buzzards Bay- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft. .TUE...SW winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .WED NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .FRI...N winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NE winds around 5 kt. Seas 1 foot or less. .SAT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-220815- Rhode Island Sound- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. .TUE...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .WED NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .FRI...N winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT...NE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...NE 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. $$ ANZ237-220815- Block Island Sound- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A slight chance of showers with isolated tstms after midnight. Some tstms may produce heavy rainfall after midnight. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .WED NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. .FRI...N winds 5 to 10 kt. Seas 1 foot or less. .FRI NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-220815- Boston Harbor- 345 PM EDT Mon Aug 21 2017 .TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Waves around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...W winds around 5 kt. Waves 1 foot or less. .THU...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 foot or less. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Waves 1 foot or less. .FRI...N winds around 5 kt. Waves 1 foot or less. .FRI NIGHT...N winds around 5 kt. Waves 1 foot or less. .SAT...NE winds around 5 kt. Waves 1 foot or less. .SAT NIGHT...NE winds around 5 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. $$ ANZ236-220815- Narragansett Bay- 345 PM EDT Mon Aug 21 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...NW winds around 5 kt. Waves 1 foot or less. .THU...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 foot or less. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Waves 1 foot or less. .FRI...N winds around 5 kt. Waves 1 foot or less. .FRI NIGHT...N winds around 5 kt. Waves 1 foot or less. .SAT...NE winds around 5 kt. Waves 1 foot or less. .SAT NIGHT...NE winds around 5 kt. Waves 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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