Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 152002 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 401 PM EDT Fri Mar 15 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-160900- 401 PM EDT Fri Mar 15 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak high pressure builds over the coastal waters Saturday supporting quiet conditions and light west/southwest winds. Southwest winds strengthen Saturday night ahead of a cold front that will bring periods of rain to the coastal waters throughout the day Sunday. $$ ANZ250-160900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 401 PM EDT Fri Mar 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Patchy fog this evening with vsby 1 NM or less. .SAT...W winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SUN...S winds 15 to 20 kt, becoming SW 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. A chance of rain. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED AND WED NIGHT...W winds 10 to 15 kt, becoming NW 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-160900- Massachusetts Bay and Ipswich Bay- 401 PM EDT Fri Mar 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...N 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 this evening. .SAT...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SUN...S winds 15 to 20 kt, becoming SW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE THROUGH WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 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. $$ ANZ231-160900- Cape Cod Bay- 401 PM EDT Fri Mar 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog this evening with vsby 1 to 3 NM. .SAT...NW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .SUN...S winds 15 to 20 kt, becoming SW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE THROUGH WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-160900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 401 PM EDT Fri Mar 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SATURDAY... .TONIGHT...N winds 15 to 20 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog this evening with vsby 1 NM or less. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain in the morning. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 5 ft. .WED AND WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 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. $$ ANZ255-160900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 401 PM EDT Fri Mar 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SUN...S winds 20 to 25 kt, becoming SW 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. .SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, diminishing to around 10 kt after midnight. Seas 4 to 6 ft. .MON AND MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED AND WED NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-160900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 401 PM EDT Fri Mar 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SATURDAY... .TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. .SUN NIGHT THROUGH MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE THROUGH WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 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. $$ ANZ232-160900- Nantucket Sound- 401 PM EDT Fri Mar 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING... .TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog this evening with vsby 1 to 3 NM. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain in the morning. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE THROUGH WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-160900- Vineyard Sound- 401 PM EDT Fri Mar 15 2024 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE THROUGH WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 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. $$ ANZ234-160900- Buzzards Bay- 401 PM EDT Fri Mar 15 2024 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .SAT...W winds around 5 kt, becoming SW with gusts up to 20 kt in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain in the morning. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE THROUGH WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-160900- Rhode Island Sound- 401 PM EDT Fri Mar 15 2024 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...W winds around 5 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...SW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE THROUGH WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 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. $$ ANZ237-160900- Block Island Sound- 401 PM EDT Fri Mar 15 2024 .TONIGHT...N winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. .SUN NIGHT THROUGH MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE THROUGH WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-160900- Boston Harbor- 401 PM EDT Fri Mar 15 2024 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NW around 5 kt after midnight. Waves around 2 ft this evening, then 1 foot or less. .SAT...W winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves around 2 ft. .SUN...SW winds 15 to 20 kt, becoming W in the afternoon. Gusts up to 25 kt. Waves around 2 ft. A chance of rain. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt. Waves around 2 ft. .TUE THROUGH WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 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. $$ ANZ236-160900- Narragansett Bay- 401 PM EDT Fri Mar 15 2024 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to around 5 kt after midnight. Waves around 2 ft. .SAT...W winds around 5 kt, becoming SW with gusts up to 20 kt in the afternoon. Waves around 2 ft. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves 2 to 3 ft. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. .TUE THROUGH WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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