Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 172003 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 403 PM EDT Thu Aug 17 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-180830- 403 PM EDT Thu Aug 17 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak high pressure off the coast will move farther offshore tonight. A warm front will lift north across the region Friday morning and a cold front will pass from west to east across the waters early Saturday. Showers and thunderstorms will be widespread Friday into Saturday morning across the waters, along with areas of fog. High pressure will return on Sunday through Tuesday. A cold front will approach the waters midweek. 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. $$ ANZ250-180830- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY EVENING THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 4 ft. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...SW winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 10 to 15 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-180830- Massachusetts Bay and Ipswich Bay- 403 PM EDT Thu Aug 17 2017 .TONIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .FRI NIGHT...S winds 10 to 15 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 NM or less. .SAT...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 1 foot or less. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt with gusts up to 20 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. $$ ANZ231-180830- Cape Cod Bay- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers with tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...W winds around 5 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-180830- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY EVENING THROUGH LATE FRIDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. 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. .SAT NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. .SUN...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds around 5 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 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. $$ ANZ255-180830- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog after midnight with vsby 1 NM or less. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-180830- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. .FRI...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 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. $$ ANZ232-180830- Nantucket Sound- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers with tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-180830- Vineyard Sound- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers with tstms likely. Some tstms may produce 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 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-180830- Buzzards Bay- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Showers with tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-180830- Rhode Island Sound- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...S winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers and tstms likely. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-180830- Block Island Sound- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-180830- Boston Harbor- 403 PM EDT Thu Aug 17 2017 .TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .FRI...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .FRI NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...W winds around 5 kt. Waves 1 foot or less. .SUN...W winds around 5 kt. Waves 1 foot or less. .SUN NIGHT...NW winds around 5 kt. Waves 1 foot or less. .MON...W winds around 5 kt. Waves 1 foot or less. .MON NIGHT...SW winds around 5 kt. Waves 1 foot or less. .TUE...SW winds around 5 kt. Waves 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt with gusts up to 20 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. $$ ANZ236-180830- Narragansett Bay- 403 PM EDT Thu Aug 17 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves around 2 ft. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...W winds 5 to 10 kt. Waves around 2 ft. .SUN...W winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...W winds around 5 kt. Waves 1 foot or less. .MON...W winds around 5 kt. Waves 1 foot or less. .MON NIGHT...SW winds around 5 kt. Waves 1 foot or less. .TUE...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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