Coastal Waters Forecast
Issued by NWS Boston, MA

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319 FZUS51 KBOX 031706 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 PM EDT Fri May 3 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-040600- 105 PM EDT Fri May 3 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Maritime high pressure remains over the MA and RI waters into Sunday, yielding tranquil boating weather. Then a cold front sweeps across the waters late Sunday into Monday morning, accompanied by numerous showers and areas of fog, lowering vsby 1 to 3 miles at times. The front moves offshore Monday afternoon, followed by WNW winds, dry weather and good vsby through Tuesday. This tranquil boating weather may linger through much of Wednesday, before a warm front approaches from the southwest late Wednesday into Thursday. $$ ANZ250-040600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 6 seconds. .TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and S 1 ft at 5 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and SE 1 ft at 11 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 1 ft at 11 seconds. .SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and E 2 ft at 7 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 4 seconds. Showers likely. .MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .MON NIGHT AND TUE...SW winds around 10 kt, becoming NE. Seas 2 to 3 ft. .TUE NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-040600- Massachusetts Bay and Ipswich Bay- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and E 1 ft at 9 seconds. .TONIGHT...E winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and E 1 ft at 9 seconds. .SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and SE 1 ft at 11 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 1 ft at 11 seconds. A chance of. .SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 6 seconds. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 5 seconds. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT AND TUE...SW winds 5 to 10 kt, becoming NE. Seas 2 to 3 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. 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. $$ ANZ231-040600- Cape Cod Bay- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...NE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 1 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 ft at 4 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and E 1 ft at 11 seconds. .SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and E 1 ft at 4 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds around 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and S 1 ft at 2 seconds. A chance of showers in the evening, then showers likely after midnight. .MON...SW winds around 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT AND TUE...SW winds around 10 kt, becoming N. Seas around 2 ft. .TUE NIGHT...S winds around 10 kt. Seas 1 foot or less. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-040600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 10 to 15 kt. Seas around 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 ft at 6 seconds. .TONIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and S 1 ft at 5 seconds. .SAT...NE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 3 ft. Wave Detail: NE 3 ft at 6 seconds and E 1 ft at 11 seconds. .SUN...SE winds 5 to 10 kt. Seas around 3 ft. Wave Detail: E 3 ft at 8 seconds and SE 1 ft at 3 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 2 ft at 4 seconds. A chance of showers in the evening, then showers likely after midnight. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .MON NIGHT AND TUE...SW winds around 10 kt, becoming NW. Seas 3 to 4 ft. .TUE NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ255-040600- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and E 1 ft at 10 seconds. .SUN...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 2 ft at 10 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and E 3 ft at 8 seconds. A chance of showers in the evening, then showers likely after midnight. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT AND TUE...W winds 10 to 15 kt. Seas 2 to 4 ft. .TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-040600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and E 1 ft at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and E 1 ft at 8 seconds. A chance of. .SUN...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and E 3 ft at 8 seconds. A chance of showers in the evening, then showers likely after midnight. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Showers likely. .MON NIGHT AND TUE...SW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ232-040600- Nantucket Sound- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 2 ft at 4 seconds and S 1 ft at 5 seconds, becoming NE 1 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and E 1 ft at 10 seconds. .SUN...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SE 1 ft at 5 seconds and E 1 ft at 10 seconds, becoming E 2 ft at 6 seconds and SE 1 ft at 3 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and SW 1 ft at 3 seconds. A chance of showers in the evening, then showers likely after midnight. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .MON NIGHT AND TUE...W winds around 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-040600- Vineyard Sound- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. Wave Detail: N 1 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 1 foot or less. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: NE 1 ft at 3 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 ft at 3 seconds and SE 1 ft at 6 seconds. A chance of. .SUN...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SE 1 ft at 5 seconds and E 1 ft at 9 seconds. A chance of showers in the afternoon. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 1 foot or less. Wave Detail: SE 1 ft at 5 seconds and E 1 ft at 9 seconds. A chance of showers in the evening, then showers likely after midnight. .MON...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .MON NIGHT AND TUE...W winds 5 to 10 kt. Seas around 2 ft, then 1 foot or less. .TUE NIGHT...SW winds around 10 kt. Seas 1 foot or less. A chance of showers. 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. $$ ANZ234-040600- Buzzards Bay- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. Wave Detail: N 1 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...NE winds 10 to 15 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. Wave Detail: N 1 ft at 3 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: NE 1 ft at 2 seconds and S 1 ft at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 ft at 2 seconds and SE 1 ft at 5 seconds. A chance of. .SUN...SE winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: SE 1 ft at 5 seconds and E 1 ft at 9 seconds. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SE 1 ft at 4 seconds and E 1 ft at 9 seconds, becoming SE 2 ft at 4 seconds and E 1 ft at 9 seconds. Showers likely. .MON...SW winds 10 to 15 kt. Seas 1 foot or less. A chance of showers. .MON NIGHT AND TUE...W winds 5 to 10 kt. Seas around 2 ft, then 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-040600- Rhode Island Sound- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 2 ft at 4 seconds and S 1 ft at 5 seconds, becoming NE 1 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: NE 1 ft at 4 seconds and S 1 ft at 5 seconds, becoming E 2 ft at 5 seconds and E 1 ft at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 8 seconds. A chance of. .SUN...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 ft at 8 seconds. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 8 seconds. Showers likely. .MON...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .MON NIGHT AND TUE...W winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of showers. 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. $$ ANZ237-040600- Block Island Sound- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and S 1 ft at 5 seconds. .TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and S 1 ft at 5 seconds. .SAT...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SE 1 ft at 5 seconds and SE 1 ft at 11 seconds, becoming SE 2 ft at 5 seconds and SE 1 ft at 11 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and SE 1 ft at 11 seconds. A chance of. .SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 ft at 8 seconds. A chance of showers. .SUN NIGHT...S winds around 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and E 1 ft at 8 seconds. Showers likely. .MON...SW winds around 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT AND TUE...W winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-040600- Boston Harbor- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...E winds around 10 kt. Waves 1 foot or less. .TONIGHT...E winds 5 to 10 kt, becoming N after midnight. Waves 1 foot or less. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Waves 1 foot or less. .SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft in the evening, then 1 foot or less. A chance of. .SUN...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Showers likely, mainly in the evening. .MON...SW winds around 10 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT AND TUE...W winds 5 to 10 kt, becoming NE. Waves 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. 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. $$ ANZ236-040600- Narragansett Bay- 105 PM EDT Fri May 3 2024 .THIS AFTERNOON...NE winds around 10 kt. Waves around 2 ft. .TONIGHT...NE winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. .SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. A chance of. .SUN...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 foot or less. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves around 2 ft. Showers likely. .MON...SW winds around 10 kt. Waves around 2 ft. A chance of showers. .MON NIGHT AND TUE...W winds 5 to 10 kt. Waves around 2 ft. .TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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