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Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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000 FZUS51 KBOX 192302 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 701 PM EDT Fri Apr 19 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-201200- 701 PM EDT Fri Apr 19 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres over the waters south of Nova Scotia continues to move eastward tonight. A cold front then brings showers and a period of breezy conditions for Sat. High pres then returns for Sun and Mon, though with W to NW breezes. $$ ANZ250-201200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 4 seconds and E 2 ft at 11 seconds. A chance of showers after midnight. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 1 ft at 4 seconds. Patchy fog. Showers in the morning. A chance of showers in the afternoon. Vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 5 seconds. A chance of showers in the evening with vsby 1 to 3 NM. .SUN...W winds 10 to 15 kt with gusts up to 20 kt, becoming SW in the afternoon. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 6 seconds. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. .MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE AND TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming SW. Gusts up to 30 kt. Seas 3 to 5 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-201200- Massachusetts Bay and Ipswich Bay- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 4 seconds. A chance of showers after midnight. .SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 ft at 5 seconds. Showers, mainly in the morning. Patchy fog in the morning. Vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 5 seconds. A chance of showers in the evening. .SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 6 seconds. .SUN NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 6 seconds. .MON AND MON NIGHT...NW winds 15 to 20 kt. Seas around 2 ft. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. 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. $$ ANZ231-201200- Cape Cod Bay- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds around 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Wave Detail: SE 1 ft at 3 seconds and S 1 ft at 4 seconds. A chance of showers after midnight. .SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 ft at 4 seconds. Patchy fog. Showers. Vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 6 seconds. .SUN...W winds 10 to 15 kt with gusts up to 20 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 ft at 6 seconds. .SUN NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft at 3 seconds and SE 1 ft at 6 seconds. .MON AND MON NIGHT...N winds 10 to 15 kt. Seas around 2 ft. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED...S winds around 15 kt with gusts up to 25 kt. Seas around 2 ft. A chance of rain. .WED NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-201200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 701 PM EDT Fri Apr 19 2024 .TONIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds and E 2 ft at 11 seconds. A slight chance of showers after midnight. .SAT...S winds around 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 11 seconds. Patchy fog. Showers. Vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 3 ft at 6 seconds. .SUN...NW winds 10 to 15 kt with gusts up to 20 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at 6 seconds. .SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: S 2 ft at 5 seconds and E 1 ft at 11 seconds. .MON AND MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE THROUGH WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...SW winds around 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of rain. 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. $$ ANZ255-201200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 701 PM EDT Fri Apr 19 2024 .TONIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and E 1 ft at 4 seconds. A slight chance of showers after midnight. .SAT...S winds around 10 kt, becoming W in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 6 seconds and W 2 ft at 4 seconds. Patchy fog. A chance of showers in the morning, then showers likely in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 3 ft at 7 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .SUN...NW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 2 ft at 6 seconds. .SUN NIGHT AND MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 2 ft at 7 seconds. .MON NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas around 2 ft. .TUE THROUGH WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-201200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 701 PM EDT Fri Apr 19 2024 .TONIGHT...SE winds 5 to 10 kt. Seas around 4 ft. Wave Detail: SE 4 ft at 7 seconds and E 1 ft at 11 seconds. Patchy fog after midnight. A chance of showers after midnight with vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and W 2 ft at 4 seconds. Patchy fog. Showers. Vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 3 ft at 7 seconds. .SUN...NW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN NIGHT AND MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 7 seconds. .MON NIGHT...W winds around 10 kt, becoming N after midnight. Seas around 2 ft. .TUE AND TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. 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. $$ ANZ232-201200- Nantucket Sound- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 4 seconds. A slight chance of showers after midnight. .SAT...S winds around 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 ft at 5 seconds. Patchy fog. Showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 ft at 6 seconds. .SUN...W winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 6 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 6 seconds. .MON AND MON NIGHT...N winds 10 to 15 kt. Seas 1 foot or less. .TUE THROUGH WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-201200- Vineyard Sound- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and S 1 ft at 3 seconds. A chance of showers after midnight. .SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 6 seconds. Patchy fog. Showers. Vsby 1 NM or less in the morning. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and S 2 ft at 7 seconds. .SUN...W winds 10 to 15 kt, becoming SW 20 to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: W 2 ft at 4 seconds and S 1 ft at 7 seconds. .SUN NIGHT AND MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 ft at 7 seconds. .MON NIGHT...SW winds around 10 kt, becoming N after midnight. Seas 1 foot or less. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less, then around 2 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. 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. $$ ANZ234-201200- Buzzards Bay- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 ft at 3 seconds. A chance of showers after midnight. .SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 6 seconds. Showers. Patchy fog in the morning. Vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 ft at 5 seconds. .SUN...W winds around 10 kt, becoming SW 20 to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 ft at 6 seconds. .SUN NIGHT AND MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 ft at 7 seconds. .MON NIGHT...SW winds around 10 kt, becoming N after midnight. Seas 1 foot or less. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less, then around 2 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-201200- Rhode Island Sound- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and E 1 ft at 3 seconds. Patchy fog after midnight. A chance of showers after midnight. .SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 4 seconds. Showers. Patchy fog in the morning. Vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN...W winds 10 to 15 kt, becoming SW 20 to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN NIGHT AND MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds. .MON NIGHT...W winds around 10 kt, becoming N after midnight. Seas around 2 ft. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. 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. $$ ANZ237-201200- Block Island Sound- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and E 1 ft at 4 seconds. Patchy fog after midnight. A chance of showers after midnight with vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and W 2 ft at 3 seconds. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 7 seconds. .SUN NIGHT AND MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds. .MON NIGHT...W winds around 10 kt, becoming N after midnight. Seas around 2 ft in the evening, then 1 foot or less. .TUE AND TUE NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-201200- Boston Harbor- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. A chance of showers after midnight. .SAT...SW winds 5 to 10 kt. Waves around 2 ft in the morning, then 1 foot or less. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers in the evening. .SUN...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Waves around 2 ft. .SUN NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Waves around 2 ft. .MON AND MON NIGHT...W winds 15 to 20 kt. Waves around 2 ft. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .WED AND WED NIGHT...S winds around 15 kt, becoming W. Gusts up to 25 kt. Waves around 2 ft. A chance of rain. 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. $$ ANZ236-201200- Narragansett Bay- 701 PM EDT Fri Apr 19 2024 .TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. Patchy fog after midnight. A chance of showers after midnight. .SAT...SW winds 5 to 10 kt. Waves around 2 ft. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SUN...W winds around 10 kt, becoming SW 15 to 20 kt in the afternoon. Waves 2 to 3 ft. .SUN NIGHT AND MON...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .MON NIGHT...W winds around 10 kt, becoming NW after midnight. Waves 1 foot or less. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .WED AND WED NIGHT...S winds 10 to 15 kt, becoming W. Gusts up to 25 kt. Waves 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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