FZUS51 KBOX 220205 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1005 PM EDT Fri Aug 21 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-221500- 1005 PM EDT Fri Aug 21 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak low pres lingers SE of the Cape and Nantucket through Sat along a stalled front. High pres pushes this front farther offshore sometime Mon into Mon night. This high pres should remain over the waters through Wed. $$ ANZ250-221500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 5 seconds. A slight chance of showers. A chance of showers. .SAT...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers. .SAT NIGHT...NE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and N 1 foot at 4 seconds. Patchy fog. A chance of showers after midnight. .SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and N 1 foot at 4 seconds. A chance of showers. Patchy fog in the morning. .SUN NIGHT THROUGH MON NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and SW 1 foot at 3 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 6 seconds and W 1 foot at 3 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-221500- Massachusetts Bay and Ipswich Bay- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 5 seconds. A slight chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers. .SAT NIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and N 1 foot at 4 seconds. Patchy fog. A chance of showers. .SUN...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and N 1 foot at 4 seconds. A chance of showers. Patchy fog in the morning. .SUN NIGHT THROUGH MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SE 1 foot at 12 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and W 1 foot at 2 seconds. 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. $$ ANZ231-221500- Cape Cod Bay- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and N 1 foot at 4 seconds. A chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and NE 2 ft at 3 seconds. A chance of showers. .SAT NIGHT...N winds around 5 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 5 seconds. Patchy fog. A chance of showers after midnight. .SUN...E winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and NE 1 foot at 4 seconds. A chance of showers. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at 2 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 6 seconds and W 1 foot at 2 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-221500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers in the morning. .SAT NIGHT...W winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and NW 1 foot at 3 seconds. Patchy fog. A chance of showers after midnight. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 6 seconds and N 1 foot at 4 seconds. Showers likely in the morning. A chance of showers in the afternoon. Patchy fog in the morning. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at 3 seconds. A chance of showers in the evening. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at 3 seconds. .TUE THROUGH WED NIGHT...SW 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. $$ ANZ255-221500- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 2 ft at 5 seconds. A chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 2 ft at 5 seconds. .SAT NIGHT...W winds around 5 kt, becoming SE after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and NW 1 foot at 3 seconds. Patchy fog. A chance of showers after midnight. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and N 1 foot at 5 seconds. Showers likely in the morning. A chance of showers in the afternoon. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: SE 4 ft at 6 seconds and NW 1 foot at 4 seconds. A chance of showers in the evening. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: S 4 ft at 7 seconds and SW 3 ft at 3 seconds. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. .TUE THROUGH WED NIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-221500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 15 to 20 kt. Seas around 3 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 6 seconds. A chance of showers this evening. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2to 3 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 5 seconds. A chance of showers in the afternoon. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and S 1 foot at 5 seconds. A chance of showers. Patchy fog after midnight with vsby 1 to 3 NM. .SUN...SE winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and SE 2 ft at 12 seconds. A chance of showers. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 4 ft at 6 seconds and SW 3 ft at 5 seconds. .MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 7 seconds and W 2 ft at 5 seconds. .TUE THROUGH WED NIGHT...SW winds 15 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. $$ ANZ232-221500- Nantucket Sound- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at 5 seconds. A chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 5 seconds. .SAT NIGHT...NW winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and N 1 foot at 2 seconds. Patchy fog. A chance of showers after midnight with vsby 1 to 3 NM. .SUN...SE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 1 foot at 4 seconds and N 1 foot at 5 seconds. Showers likely in the morning. A chance of showers in the afternoon. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and W 2 ft at 3 seconds. .TUE THROUGH WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and W 2 ft at 3 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-221500- Vineyard Sound- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 15 to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and N 2 ft at 4 seconds. A chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 6 seconds. A chance of showers in the afternoon. .SAT NIGHT...NE winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 5 seconds. A chance of showers. Patchy fog after midnight. .SUN...SE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 1 foot at 4 seconds and N 1 foot at 5 seconds. Showers likely in the morning. A chance of showers in the afternoon. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...W 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 E 1 foot at 5 seconds. .TUE THROUGH WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 3 seconds and SW 3 ft at 5 seconds. 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. $$ ANZ234-221500- Buzzards Bay- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 6 seconds. A chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 5 seconds, becoming N 1 foot at 4 seconds and S 1 foot at 5 seconds. A chance of showers in the afternoon. .SAT NIGHT...N winds 5 to 10 kt, becoming E after midnight. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 5 seconds. A chance of showers. Patchy fog after midnight. .SUN...E winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and N 1 foot at 4 seconds. Showers likely in the morning. A chance of showers in the afternoon. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 4 seconds. .TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SW 2 ft at 4 seconds. .WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-221500- Rhode Island Sound- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and N 2 ft at 4 seconds. A chance of showers this evening. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 5 seconds. A chance of showers in the afternoon. .SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 5 seconds. A chance of showers. Patchy fog after midnight. .SUN...E winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and N 1 foot at 4 seconds. A chance of showers. Patchy fog in the morning. .SUN NIGHT AND MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 7 seconds and W 2 ft at 3 seconds. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW 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. $$ ANZ237-221500- Block Island Sound- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at 5 seconds. A slight chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at 5 seconds. A chance of showers in the afternoon. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 5 seconds. A chance of showers. Patchy fog after midnight. .SUN...E winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and N 1 foot at 4 seconds. Showers likely, mainly in the morning. Patchy fog in the morning. .SUN NIGHT AND MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SE 3 ft at 6 seconds and SW 1 foot at 2 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at 3 seconds. .TUETHROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-221500- Boston Harbor- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft. A slight chance of showers. .SAT...NE winds 10 to 15 kt. Waves around 2 ft. A chance of showers. .SAT NIGHT...N winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves 1 foot or less. Patchy fog. A chance of showers. .SUN...E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. Patchy fog in the morning. .SUN NIGHT THROUGH MON NIGHT...W winds 5 to 10 kt. Waves around 2 ft. .TUE THROUGH WED NIGHT...SW 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. $$ ANZ236-221500- Narragansett Bay- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 10 to 15 kt. Waves around 2 ft. A slight chance of showers. .SAT...N winds 5 to 10 kt. Waves around 2 ft. A chance of showers in the afternoon. .SAT NIGHT...NE winds around 5 kt. Waves around 2 ft. A chance of showers. Patchy fog after midnight. .SUN...E winds 5 to 10 kt, becoming S in the afternoon. Waves around 2 ft. A chance of showers. Patchy fog in the morning. .SUN NIGHT THROUGH MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-221500- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. A slight chance of showers, then a chance of showers. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 4 seconds and SE 2 ft at 7 seconds. A chance of showers. .SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and N 1 foot at 3 seconds. Patchy fog. A chance of showers after midnight. .SUN...SE winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas around 3 ft. Wave Detail: SE 2 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers. Patchy fog in the morning. Vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and W 2 ft at 3 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and W 2 ft at 3 seconds. 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. $$ ANZ281-221500- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SW 2 ft at 6 seconds. A chance of showers with a slight chance of tstms. Patchy fog. .SAT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and SW 2 ft at 6 seconds. A chance of showers in the morning. .SAT NIGHT...S winds 5 to 10 kt. Seas around 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ftat 5 seconds. Patchy fog. A chance of showers after midnight with vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 2 ft at 5 seconds and N 1 foot at 4 seconds. Showers in the morning. A chance of showers in the afternoon. Patchy fog in the morning. Vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and NW 1 foot at 4 seconds. A chance of showers. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: SE 4 ft at 7 seconds and W 1 foot at 3 seconds. A chance of showers in the morning. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-221500- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas around 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 3 ft at 5 seconds. A chance of showers this evening. .SAT...N winds 5 to 10 kt, becoming NW in the afternoon. Seas around 3 ft. Wave Detail: N 2 ft at 5 seconds and SW 2 ft at 5 seconds. .SAT NIGHT...SW winds around 5 kt, becoming S after midnight. Seas 3 to 4 ft. Wave Detail: S 2 ft at 4 seconds and N 2 ft at 5 seconds. A chance of showers. Patchy fog after midnight with vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 12 seconds. Showers in the morning. A chance of showers in the afternoon. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: SE 4 ft at 7 seconds and N 1 foot at 4 seconds. A chance of showers. .MON...SW winds 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: SE 5 ft at 7 seconds and W 2 ft at 4 seconds. A chance of showers in the morning. .MON NIGHT...SW winds around 10 kt. Seas 4 to 6 ft. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 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. $$ ANZ283-221500- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 1005 PM EDT Fri Aug 21 2026 .OVERNIGHT...NE winds 15 to 20 kt. Seas around 3 ft. Wave Detail: N 3 ft at 5 seconds and S 2 ft at 5 seconds. A slight chance of showers. .SAT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 3 ft. Wave Detail: N 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers in the afternoon. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 3 ft. Wave Detail: NE 2 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers. Patchy fog after midnight with vsby 1 to 3 NM. .SUN...S winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 3 ft at 5 seconds and NE 1 foot at 5 seconds. Showers in the morning. A chance of showers in the afternoon. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT...SW winds around 10 kt. Seas 5 to 7 ft. Wave Detail: E 5 ft at 8 seconds and S 4 ft at 6 seconds. A chance of showers in the evening. .MON AND MON NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 7 seconds and W 3 ft at 5 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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