Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 180801 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 401 AM EDT Fri Aug 18 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-182030- 401 AM EDT Fri Aug 18 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... A warm front will lift north across the waters today. A cold front will then cross New England later tonight and Saturday, passing across the waters early Saturday night. This will bring showers and thunderstorms along with areas of fog. High pressure will return with dry weather on Saturday night 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. $$ ANZ250-182030- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY AFTERNOON... .TODAY...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 4 ft. A chance of showers this morning, then showers likely this afternoon. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 3 to 5 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-182030- Massachusetts Bay and Ipswich Bay- 401 AM EDT Fri Aug 18 2017 .TODAY...S winds 5 to 10 kt, becoming SE 10 to 15 kt with a few gusts up to 25 kt this afternoon. Seas 2 to 4 ft. A chance of showers this morning, then showers likely this afternoon. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...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 4 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt. 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 around 5 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 5 to 10 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. $$ ANZ231-182030- Cape Cod Bay- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with a few gusts up to 25 kt this afternoon. Seas around 2 ft. Showers likely. .TONIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-182030- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SATURDAY AFTERNOON... .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. Showers likely, mainly this morning. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...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 25 kt. Seas 4 to 6 ft. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of showers. .SUN...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 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 2 to 3 ft. .TUE NIGHT...SW 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. $$ ANZ255-182030- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY EVENING... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 4 ft. A chance of showers. Patchy fog this afternoon. .TONIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. .SUN...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-182030- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY EVENING... .TODAY...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A slight chance of showers this morning, then a chance of showers and tstms this afternoon. Some tstms may produce heavy rainfall this afternoon. Vsby 1 to 3 NM this morning. .TONIGHT...S 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. .SAT...S winds 15 to 20 kt with gusts up to 25 kt, becoming SW 10 to 15 kt in the afternoon. Seas 4 to 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...W winds 5 to 10 kt. 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 2 to 3 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 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 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. $$ ANZ232-182030- Nantucket Sound- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas around 2 ft. Showers likely, mainly this morning. .TONIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-182030- Vineyard Sound- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. A chance of showers. A chance of tstms this afternoon. Some tstms may produce heavy rainfall this afternoon. .TONIGHT...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. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...W winds 5 to 10 kt. 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 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 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. $$ ANZ234-182030- Buzzards Bay- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas around 2 ft. A chance of showers. A chance of tstms this afternoon. Some tstms may produce heavy rainfall this afternoon. .TONIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SW winds 10 to 15 kt. Seas 1 foot or less. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-182030- Rhode Island Sound- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. A chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon. .TONIGHT...S 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. .SAT...S winds 15 to 20 kt, becoming SW 10 to 15 kt in the afternoon. Seas 4 to 6 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 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 2 to 3 ft. .TUE NIGHT...SW 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. $$ ANZ237-182030- Block Island Sound- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A slight chance of showers this morning, then a chance of showers and tstms this afternoon. Some tstms may produce heavy rainfall this afternoon. Vsby 1 to 3 NM. .TONIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-182030- Boston Harbor- 401 AM EDT Fri Aug 18 2017 .TODAY...S winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Waves around 2 ft. Showers. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers and tstms. Some tstms may produce heavy rainfall. 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...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 around 5 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. $$ ANZ236-182030- Narragansett Bay- 401 AM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers. A chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. Patchy fog. Showers with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 NM or less. .SAT...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .SUN...W winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .MON...W winds around 5 kt. Waves 1 foot or less. .MON NIGHT...SW winds around 5 kt. Waves 1 foot or less. .TUE...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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