Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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406 FZUS51 KBOX 291705 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 104 PM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-300600- 104 PM EDT Tue Sep 29 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure builds across the area Wednesday and then moves southeastward and into the Atlantic through Friday. $$ ANZ250-300600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 104 PM EDT Tue Sep 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .THIS AFTERNOON...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and N 2 ft at 5 seconds. .TONIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 2 ft at 5 seconds. .WED...N winds around 5 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 1 foot at 3 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 2 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 9 seconds. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 4 seconds. .FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT AND SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-300600- Massachusetts Bay and Ipswich Bay- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and NW 1 foot at 4 seconds. .TONIGHT...NW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and W 2 ft at 4 seconds. .WED...NW winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 14 seconds. .WED NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 8 seconds and E 2 ft at 9 seconds. .THU AND THU NIGHT...SW 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 E 3 ft at 9 seconds. .FRI...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 8 seconds. .FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT AND SAT NIGHT...NE winds 10 to 15 kt, becoming E 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. $$ ANZ231-300600- Cape Cod Bay- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 6 seconds and E 2 ft at 9 seconds. .TONIGHT...NW winds around 5 kt. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and E 2 ft at 9 seconds. .WED...N winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 13 seconds and N 1 foot at 5 seconds. .WED NIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and SW 1 foot at 3 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot at 4 seconds. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and E 2 ft at 10 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-300600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...NW winds around 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 9 seconds and NW 2 ft at 5 seconds. .TONIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and S 2 ft at 7 seconds. .WED...N winds 5 to 10 kt, diminishing to around 5 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 1 foot at 5 seconds. .WED NIGHT...S winds around 5 kt, becoming SW after midnight. Seas 2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 4 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 9 seconds. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SW 3 ft at 5 seconds. .SAT NIGHT...NE 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. $$ ANZ255-300600- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and E 3 ft at 8 seconds. .TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and SW 2 ft at 6 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 2 ft at 6 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 4 seconds. .THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds. .THU NIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 9 seconds. .FRI AND FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT...N winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-300600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and E 2 ft at 8 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SW 2 ft at 6 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 9 seconds and N 1 foot at 4 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SW 2 ft at 3 seconds. .THU NIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 9 seconds. .FRI THROUGH SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds around 15 kt with gusts up to 20 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. $$ ANZ232-300600- Nantucket Sound- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and W 1 foot at 3 seconds. .TONIGHT...NW winds around 5 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds and E 2 ft at 9 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 5 seconds and NE 1 foot at 5 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and SW 1 foot at 5 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and NE 1 foot at 4 seconds. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and N 2 ft at 3 seconds. .SAT NIGHT...NE winds 10 to 15 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-300600- Vineyard Sound- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 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: NE 2 ft at 5 seconds and SW 2 ft at 6 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and SW 1 foot at 6 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at 5 seconds. .FRI THROUGH SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and N 2 ft at 3 seconds. .SAT NIGHT...NE 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. $$ ANZ234-300600- Buzzards Bay- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds and W 1 foot at 5 seconds. .TONIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and N 1 foot at 5 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 5 seconds and S 1 foot at 5 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at 4 seconds. .FRI THROUGH SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SW 2 ft at 3 seconds. .SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-300600- Rhode Island Sound- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and S 2 ft at 6 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 4 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 3 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at 5 seconds. .FRI THROUGH SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and W 2 ft at 3 seconds. .SAT NIGHT...NE winds 10 to 15 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. $$ ANZ237-300600- Block Island Sound- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 7 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 4 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 2 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 6 seconds. .FRI THROUGH SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and N 2 ft at 3 seconds. .SAT NIGHT...E winds 10 to 15 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-300600- Boston Harbor- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...NW winds around 5 kt. Waves 1 foot or less. .TONIGHT...NW winds around 5 kt. Waves 1 foot or less. .WED...NW winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less. .THU AND THU NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. .FRI...SW winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT...NE winds 5 to 10 kt. Waves around 2 ft. .SAT NIGHT...E 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. $$ ANZ236-300600- Narragansett Bay- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds around 5 kt. Waves around 2 ft. .TONIGHT...W winds around 5 kt, becoming N after midnight. Waves around 2 ft in the evening, then 1 foot or less. .WED...N winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI THROUGH SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SAT NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-300600- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: E 4 ft at 9 seconds and N 3 ft at 5 seconds. Patchy fog. Patchy drizzle. Vsby 1 to 3 NM. .TONIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: N 3 ft at 5 seconds and E 3 ft at 9 seconds. Patchy drizzle in the evening. .WED...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 2 ft at 4 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 3 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 4 seconds and E 3 ft at 9 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 4 seconds and W 2 ft at 4 seconds. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT AND SAT NIGHT...NE 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. $$ ANZ281-300600- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 5 ft. Wave Detail: S 3 ft at 7 seconds and E 3 ft at 9 seconds. Patchy drizzle. .TONIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 5 ft. Wave Detail: E 4 ft at 9 seconds and S 3 ft at 7 seconds. .WED...NW winds 5 to 10 kt. Seas around 4 ft. Wave Detail: E 4 ft at 9 seconds and N 2 ft at 5 seconds. .WED NIGHT...W winds around 5 kt, becoming SW after midnight. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 4 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and E 3 ft at 9 seconds. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 6 seconds and N 3 ft at 4 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-300600- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: W 3 ft at 5 seconds and E 3 ft at 9 seconds. .TONIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and E 3 ft at 9 seconds. .WED...N winds around 5 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and S 2 ft at 7 seconds. .WED NIGHT...SW winds around 5 kt. Seas around 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 4 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 5 seconds and E 3 ft at 9 seconds. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds and N 2 ft at 4 seconds. .SAT NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 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. $$ ANZ283-300600- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 104 PM EDT Tue Sep 29 2026 .THIS AFTERNOON...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 3 ft at 8 seconds. .TONIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and NW 2 ft at 4 seconds. .WED...N winds around 5 kt. Seas around 3 ft. Wave Detail: E 3 ft at 9 seconds and S 2 ft at 8 seconds. .WED NIGHT...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail: E 3 ft at 9 seconds and W 1 foot at 3 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and E 3 ft at 9 seconds. .FRI THROUGH SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds and NE 3 ft at 4 seconds. .SAT NIGHT...NE winds 15 to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston