Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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921 FZUS51 KBOX 032004 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 404 PM EDT Thu Sep 3 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-040900- 404 PM EDT Thu Sep 3 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pres and its associated cold front will cross the waters into tonight. This low pres system will intensify as it lifts NE towards the Canadian Maritimes Fri and shift farther E by the holiday weekend. High pres moves towards the waters for the start of next week. $$ ANZ250-040900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 404 PM EDT Thu Sep 3 2026 .TONIGHT...NW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 9 seconds. Patchy fog. A slight chance of showers and tstms this evening. Vsby 1 NM or less. .FRI...NW winds around 5 kt, becoming SW around 5 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 4 seconds. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 6 seconds and NW 2 ft at 3 seconds. .SAT NIGHT AND SUN...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 5 ft at 6 seconds and SE 5 ft at 9 seconds. .SUN NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and NE 4 ft at 10 seconds. .MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-040900- Massachusetts Bay and Ipswich Bay- 404 PM EDT Thu Sep 3 2026 .TONIGHT...N winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 foot at 9 seconds. Patchy fog. A chance of showers with a slight chance of tstms this evening. Vsby 1 NM or less. .FRI...NW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and E 2 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and NW 2 ft at 17 seconds. .SAT...N 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 E 2 ft at 7 seconds. .SAT NIGHT AND SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 7 seconds and NE 4 ft at 8 seconds. .SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and NE 3 ft at 8 seconds. .MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 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. $$ ANZ231-040900- Cape Cod Bay- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. Patchy fog. A chance of showers with a slight chance of tstms this evening. Vsby 1 NM or less. .FRI...N winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 2 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 4 seconds. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and N 2 ft at 4 seconds. .SAT NIGHT AND SUN...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and N 3 ft at 4 seconds. .SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and N 2 ft at 5 seconds. .MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-040900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 6 seconds. Patchy fog. A chance of showers and tstms this evening. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 5 seconds. .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 SE 2 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SAT NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 7 seconds and SW 1 foot at 6 seconds. .SUN AND SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 7 seconds and NE 6 ft at 8 seconds. .MON AND MON NIGHT...NW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas 3 to 5 ft. .TUE AND TUE NIGHT...W winds 5 to 10 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. $$ ANZ255-040900- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 7 seconds. Patchy fog. A slight chance of showers and tstms this evening. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 7 seconds. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 2 ft at 5 seconds and SE 2 ft at 8 seconds. .SAT NIGHT AND SUN...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 7 seconds and SW 2 ft at 7 seconds. .SUN NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: E 4 ft at 9 seconds and NW 2 ft at 6 seconds. .MON THROUGH TUE NIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-040900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. Patchy fog. A slight chance of showers after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .FRI NIGHT...W winds around 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .SAT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at 7 seconds. .SAT NIGHT AND SUN...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and E 3 ft at 8 seconds. .SUN NIGHT...N winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and E 3 ft at 8 seconds. .MON THROUGH TUE NIGHT...SW 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. $$ ANZ232-040900- Nantucket Sound- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and E 1 foot at 5 seconds. Patchy fog. A slight chance of showers and tstms this evening. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...SW winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 7 seconds. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and SE 1 foot at 8 seconds. .SAT NIGHT AND SUN...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and E 2 ft at 8 seconds. .SUN NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and NE 2 ft at 3 seconds. .MON THROUGH TUE NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-040900- Vineyard Sound- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 5 seconds. Patchy fog. A slight chance of showers and tstms this evening. Vsby 1 NM or less after midnight. .FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 4 seconds and SE 1 foot at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 7 seconds. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds. .SAT NIGHT AND SUN...NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 7 seconds. .SUN NIGHT...N winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and SW 1 foot at 6 seconds, becoming NE 1 foot at 4 seconds and NW 1 foot at 5 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 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. $$ ANZ234-040900- Buzzards Bay- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 9 seconds. Patchy fog. A slight chance of showers and tstms this evening. Vsby 1 NM or less after midnight. .FRI...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 4 seconds and SE 1 foot at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and SE 1 foot at 7 seconds, becoming NW 1 foot at 5 seconds and SE 1 foot at 7 seconds. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 1 foot at 4 seconds and E 1 foot at 7 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 foot at 6 seconds. .SUN...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and W 1 foot at 7 seconds. .SUN NIGHT...N winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft in the evening, then 1 foot or less. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-040900- Rhode Island Sound- 404 PM EDT Thu Sep 3 2026 .TONIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and S 2 ft at 5 seconds. Patchy fog. A slight chance of showers and tstms this evening. Vsby 1 NM or less after midnight. .FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .FRI NIGHT...W winds around 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and SE 2 ft at 8 seconds. .SAT NIGHT AND SUN...NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SW 2 ft at 7 seconds. .SUN NIGHT...N winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 7 seconds. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt. Seas around 2 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. $$ ANZ237-040900- Block Island Sound- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SW 1 foot at 4 seconds. A slight chance of showers and tstms this evening. Patchy fog after midnight with vsby 1 NM or less. .FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 4 seconds. .SAT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at 4 seconds. A chance of showers in the afternoon. .SAT NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 7 seconds. A chance of showers in the evening. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 7 seconds. .MON THROUGH TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-040900- Boston Harbor- 404 PM EDT Thu Sep 3 2026 .TONIGHT...NE winds around 5 kt, becoming NW after midnight. Waves 1 foot or less. Patchy fog. A chance of showers and tstms this evening. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...NW winds around 5 kt, becoming N in the afternoon. Waves 1 foot or less. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .SAT...N winds 10 to 15 kt. Waves around 2 ft. .SAT NIGHT AND SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SUN NIGHT...W winds around 5 kt, becoming NW after midnight. Waves 1 foot or less. .MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. Winds and waves 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. $$ ANZ236-040900- Narragansett Bay- 404 PM EDT Thu Sep 3 2026 .TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Waves around 2 ft. A slight chance of showers and tstms this evening. Patchy fog after midnight with vsby 1 NM or less. .FRI...NW winds around 5 kt, becoming W in the afternoon. Waves around 2 ft. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft. .SAT...N winds 5 to 10 kt. Waves around 2 ft. A chance of showers in the afternoon. .SAT NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of showers in the evening. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-040900- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 404 PM EDT Thu Sep 3 2026 .TONIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 9 seconds. Patchy fog. A slight chance of showers and tstms this evening. Vsby 1 NM or less. .FRI...NW winds around 5 kt. Seas around 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. Patchy fog after midnight with vsby 1 NM or less. .SAT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 8 seconds. .SAT NIGHT THROUGH SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: NE 6 ft at 8 seconds and W 5 ft at 5 seconds. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: E 3 ft at 10 seconds and N 2 ft at 5 seconds. .MON NIGHT THROUGH TUE NIGHT...NW winds 5 to 10 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. $$ ANZ281-040900- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 3 to 4 ft. Wave Detail: E 3 ft at 6 seconds and SW 2 ft at 4 seconds. Patchy fog. A chance of showers and tstms this evening. Vsby 1 NM or less. .FRI...NW winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .FRI NIGHT...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail: E 2 ft at 7 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .SAT...N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 3 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: NE 6 ft at 7 seconds and SE 3 ft at 8 seconds. A chance of showers after midnight. .SUN...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: NE 7 ft at 8 seconds and SW 1 foot at 7 seconds. A chance of showers in the morning. .SUN NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 4 to 6 ft. .TUE AND TUE NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-040900- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 7 seconds. Patchy fog. A slight chance of showers. A slight chance of tstms this evening. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...NW winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .FRI NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at 7 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and E 2 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .SAT NIGHT THROUGH SUN NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: NW 6 ft at 6 seconds and NE 6 ft at 8 seconds. .MON THROUGH TUE...W winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: NE 6 ft at 10 seconds and NW 2 ft at 7 seconds. .TUE NIGHT...W winds 5 to 10 kt. Seas 3 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. $$ ANZ283-040900- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 404 PM EDT Thu Sep 3 2026 .TONIGHT...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 6 seconds. Patchy fog. A slight chance of showers after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...W winds around 10 kt, becoming NW after midnight. Seas around 3 ft. Wave Detail: W 2 ft at 5 seconds and E 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .SAT...N winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: N 3 ft at 4 seconds and E 2 ft at 8 seconds. .SAT NIGHT AND SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 6 seconds and NE 5 ft at 9 seconds. .SUN NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 4 to 6 ft. Wave Detail: NE 6 ft at 8 seconds and SW 1 foot at 6 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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