Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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578 FZUS51 KBOX 111405 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1004 AM EDT Fri Sep 11 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-120300- 1004 AM EDT Fri Sep 11 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres builds across the waters today into Sat. This high will shift east of the waters by Sun as a warm front crosses the region. A cold front quickly follows Sun night with high pres building across the waters Mon into Tue. $$ ANZ250-120300- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...NW winds 10 to 15 kt, becoming W 5 to 10 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 5 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 6 seconds. .SAT...E winds around 5 kt, becoming SE 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 6 seconds. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and N 1 foot at 3 seconds. A chance of showers after midnight. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and NW 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 5 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-120300- Massachusetts Bay and Ipswich Bay- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at 4 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and W 1 foot at 4 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 5 seconds, becoming NW 1 foot at 3 seconds and E 1 foot at 3 seconds. .SAT NIGHT...S winds around 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and N 1 foot at 3 seconds. A chance of showers after midnight. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and NW 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and SW 1 foot at 2 seconds. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 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. $$ ANZ231-120300- Cape Cod Bay- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 6 seconds. .TONIGHT...SW winds around 5 kt, becoming N after midnight. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 6 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 6 seconds, becoming NE 1 foot at 3 seconds and SE 1 foot at 6 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and N 1 foot at 3 seconds. A chance of showers after midnight. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 1 foot at 3 seconds and N 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 3 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-120300- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 10 to 15 kt, becoming NW 5 to 10 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and S 2 ft at 6 seconds. .TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 5 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 5 seconds and S 1 foot at 6 seconds. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 4 seconds. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and N 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...SW winds around 10 kt with gusts up to 20 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 9 seconds. Patchy fog in the evening. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 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. $$ ANZ255-120300- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds around 10 kt, becoming NW. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and N 1 foot at 3 seconds. .TONIGHT...SW winds around 5 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and N 1 foot at 3 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 3 seconds. .SAT NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 4 seconds. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and E 1 foot at 3 seconds. Patchy fog. Showers in the morning. Showers likely in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and E 1 foot at 3 seconds. Patchy fog in the evening. Showers likely in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-120300- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 5 to 10 kt, becoming W. Seas around 3 ft. Wave Detail: SW 3 ft at 7 seconds and N 1 foot at 3 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and W 1 foot at 2 seconds. .SAT...E winds around 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 2 seconds. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and NW 1 foot at 2 seconds. A chance of showers after midnight. .SUN...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds and W 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 6 seconds and W 1 foot at 3 seconds. A chance of showers in the evening. .MON THROUGH TUE...E winds 10 to 15 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds around 10 kt. Seas 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. $$ ANZ232-120300- Nantucket Sound- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds around 10 kt, becoming NW. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at 7 seconds. .TONIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 3 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 6 seconds, becoming E 1 foot at 2 seconds and N 1 foot at 4 seconds. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and N 1 foot at 3 seconds. A chance of showers after midnight. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and NW 1 foot at 3 seconds. Patchy fog. Showers in the morning. Showers likely in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...SW winds around 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-120300- Vineyard Sound- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 5 to 10 kt, becoming W. Seas around 2 ft. Wave Detail: N 2 ft at 2 seconds and SW 2 ft at 7 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and W 1 foot at 2 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 3 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight. .SUN...SE winds around 10 kt, becoming S in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and NW 1 foot at 3 seconds. Patchy fog. Showers, mainly in the morning. Vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt. Seas 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. $$ ANZ234-120300- Buzzards Bay- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds around 5 kt, becoming SW. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and N 1 foot at 2 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 3 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at 6 seconds, becoming E 1 foot at 2 seconds and N 1 foot at 4 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and NW 1 foot at 2 seconds. A chance of showers after midnight. .SUN...S winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and NW 2 ft at 5 seconds. Patchy fog. Showers, mainly in the morning. Vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-120300- Rhode Island Sound- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 5 to 10 kt, becoming SW. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and N 1 foot at 2 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and W 1 foot at 2 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 2 seconds. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and W 1 foot at 2 seconds. A chance of showers after midnight. .SUN...SE winds 10 to 15 kt, becoming SW in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and W 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SW 1 foot at 3 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 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. $$ ANZ237-120300- Block Island Sound- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 5 to 10 kt, becoming SW. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot at 2 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 2 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 2 seconds. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of showers after midnight. .SUN...S winds around 10 kt, becoming SW in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SW 1 foot at 2 seconds. Patchy fog. Showers, mainly in the morning with vsby 1 NM or less. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and W 1 foot at 3 seconds. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-120300- Boston Harbor- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...NW winds around 10 kt with gusts up to 20 kt, becoming W. Waves around 2 ft. .TONIGHT...NW winds around 5 kt. Waves 1 foot or less. .SAT...NE winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. .SAT NIGHT...S winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers after midnight. .SUN...SE winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Showers in the morning. Showers likely in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 5 to 10 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. $$ ANZ236-120300- Narragansett Bay- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds around 5 kt, becoming W. Waves around 2 ft. .TONIGHT...W winds around 5 kt, becoming N after midnight. Waves around 2 ft. .SAT...NE winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .SAT NIGHT...S winds 5 to 10 kt. Waves around 2 ft. A chance of showers after midnight. .SUN...SE winds around 10 kt, becoming SW in the afternoon. Gusts up to 20 kt. Waves around 2 ft. Patchy fog. Showers in the morning. Showers likely in the afternoon. Vsby 1 NM or less in the morning. .SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-120300- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 2 ft at 7 seconds. .TONIGHT...W winds around 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 5 seconds and S 2 ft at 7 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and S 1 foot at 6 seconds. .SAT NIGHT...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 N 1 foot at 3 seconds. Patchy fog after midnight. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 4 seconds and W 1 foot at 3 seconds. Patchy fog. Showers likely. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 25 kt, becoming W after midnight. Seas around 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 3 ft at 9 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 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. $$ ANZ281-120300- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and NW 2 ft at 4 seconds. .TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and N 1 foot at 5 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 5 seconds. .SAT NIGHT...SE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at 10 seconds. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 10 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds and SE 2 ft at 9 seconds. Patchy fog in the evening. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-120300- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and N 1 foot at 3 seconds. .TONIGHT...NW winds around 5 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 6 seconds and N 1 foot at 4 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 5 seconds. .SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and N 1 foot at 5 seconds. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SE 2 ft at 10 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog in the evening. A chance of showers in the evening. .MON THROUGH TUE NIGHT...SE winds 10 to 15 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. $$ ANZ283-120300- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 1004 AM EDT Fri Sep 11 2026 .THIS AFTERNOON...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and N 1 foot at 3 seconds. .TONIGHT...W winds around 5 kt, becoming N after midnight. Seas around 3 ft. Wave Detail: S 3 ft at 6 seconds and N 1 foot at 3 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 3 seconds. .SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 10 seconds. A chance of showers after midnight. .SUN...S winds around 15 kt, becoming SW in the afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds and W 2 ft at 3 seconds. Showers likely. Patchy fog in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and W 1 foot at 3 seconds. A chance of showers in the evening. .MON THROUGH TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston