Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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592 FZUS51 KBOX 011104 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 704 AM EDT Tue Sep 1 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-020000- 704 AM EDT Tue Sep 1 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... A warm front slowly lifts north tomorrow through Thu. Low pres and its associated cold front will cross the waters Thu afternoon into Thu night. This low pres system will intensify as it lifts NE towards the Canadian Maritimes Fri and shift farther E by the holiday weekend. $$ ANZ250-020000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds 5 to 10 kt, becoming SE this afternoon. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 3 seconds. A chance of showers this morning, then showers likely this afternoon. Patchy fog this afternoon. .TONIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .WED...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 12 seconds. .WED NIGHT...SE winds 10 to 15 kt. Gusts up to 25 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 10 seconds. Patchy fog. A chance of showers after midnight. Vsby 1 NM or less. .THU...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 3 ft at 9 seconds. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at 4 seconds. A chance of showers in the evening. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-020000- Massachusetts Bay and Ipswich Bay- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds around 5 kt, becoming E this afternoon. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 3 seconds, becoming SE 2 ft at 3 seconds and SE 1 foot at 8 seconds. Showers. Isolated tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and SE 1 foot at 8 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED...E winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds. .WED NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and SE 2 ft at 10 seconds. Patchy fog. Showers likely after midnight. Vsby 1 to 3 NM. .THU...S winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and SE 1 foot at 9 seconds. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 2 ft at 9 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...N 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. $$ ANZ231-020000- Cape Cod Bay- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds around 5 kt, becoming SE 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 1 foot or less, then around 2 ft this afternoon. Wave Detail: S 1 foot at 2 seconds and W 1 foot at 3 seconds, becoming SE 2 ft at 2 seconds and NW 1 foot at 3 seconds. Showers. Isolated tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers. Patchy fog in the evening with vsby 1 to 3 NM. .WED...E winds around 10 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 10 seconds. .WED NIGHT...SE winds around 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 6 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds. Showers likely. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 1 foot at 3 seconds and W 1 foot at 3 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-020000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and NW 1 foot at 3 seconds. A chance of showers this morning, then showers likely this afternoon. .TONIGHT...E 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 SE 2 ft at 9 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 9 seconds. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 10 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 9 seconds. Showers likely. Patchy fog in the morning. Vsby 1 to 3 NM. .THU NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 9 seconds. A chance of showers in the evening. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 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. $$ ANZ255-020000- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 704 AM EDT Tue Sep 1 2026 .TODAY...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and N 1 foot at 3 seconds. A chance of showers this morning, then showers likely with a slight chance of tstms this afternoon. Some tstms may produce heavy rainfall this afternoon. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 5 seconds and SE 2 ft at 11 seconds. .WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 3 ft at 9 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and E 2 ft at 5 seconds. Showers likely. Patchy fog in the morning. .THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-020000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers this morning, then showers with a slight chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 6 seconds and SE 3 ft at 9 seconds. Patchy fog. Showers in the evening. A chance of showers after midnight. Vsby 1 to 3 NM. .WED...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 4 ft at 6 seconds and SE 2 ft at 11 seconds. .WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 6 seconds and SE 2 ft at 10 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 10 to 15 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and SW 2 ft at 5 seconds. Showers likely, mainly in the morning. .THU NIGHT...SW winds 10 to 15 kt, becoming NW after midnight. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...NE 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. $$ ANZ232-020000- Nantucket Sound- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers this morning, then showers with isolated tstms this afternoon. Some tstms may produce heavy rainfall this afternoon. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. Showers likely in the evening. A chance of showers after midnight. Vsby 1 to 3 NM. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and SE 1 foot at 9 seconds. .WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and SE 1 foot at 10 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds. Showers likely. Patchy fog in the morning. Vsby 1 to 3 NM. .THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 5 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-020000- Vineyard Sound- 704 AM EDT Tue Sep 1 2026 .TODAY...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers this morning, then showers with a slight chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog. Showers likely in the evening. A chance of showers after midnight. Vsby 1 to 3 NM. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 7 seconds. .WED NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and S 2 ft at 10 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...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 SE 1 foot at 9 seconds. Showers likely. Patchy fog in the morning. .THU NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 5 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...N 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. $$ ANZ234-020000- Buzzards Bay- 704 AM EDT Tue Sep 1 2026 .TODAY...SE winds around 5 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers this morning, then showers with a slight chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 4 seconds. Patchy fog. Showers likely, mainly in the evening. Vsby 1 to 3 NM. .WED...E winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at 3 seconds. .WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and SE 1 foot at 7 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 3 seconds. Showers likely. Patchy fog in the morning. .THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 5 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-020000- Rhode Island Sound- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers this morning, then showers with a slight chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 3 ft at 9 seconds. Patchy fog. Showers likely, mainly in the evening. Vsby 1 to 3 NM. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds and SE 1 foot at 11 seconds. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming SE 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and SE 2 ft at 10 seconds. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and E 1 foot at 3 seconds. Showers likely. .THU NIGHT...SW winds 10 to 15 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and SE 3 ft at 9 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-020000- Block Island Sound- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds around 5 kt, becoming SE 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers this morning, then showers with a slight chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 1 foot at 8 seconds. Patchy fog. Showers likely, mainly in the evening. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 6 seconds and SE 1 foot at 12 seconds. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming SE 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 2 ft at 10 seconds. Patchy fog after midnight. Showers likely after midnight. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds. Showers likely. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SW 2 ft at 4 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-020000- Boston Harbor- 704 AM EDT Tue Sep 1 2026 .TODAY...SE winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft this afternoon. Patchy fog. Showers with a slight chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TONIGHT...E winds around 10 kt. Waves around 2 ft. Patchy fog. Showers likely, mainly in the evening with vsby 1 to 3 NM. .WED...E winds around 10 kt. Waves around 2 ft. .WED NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers in the evening, then showers likely after midnight. Patchy fog after midnight. .THU...S winds 5 to 10 kt. Waves around 2 ft. Showers. A chance of tstms in the afternoon. Patchy fog in the morning. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Waves 1 foot or less. Showers likely with a chance of tstms in the evening. .FRI THROUGH SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 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. $$ ANZ236-020000- Narragansett Bay- 704 AM EDT Tue Sep 1 2026 .TODAY...SE winds 5 to 10 kt. Gusts up to 25 kt this afternoon. Waves 2 to 3 ft. Patchy fog. A slight chance of tstms. A chance of showers this morning, then showers this afternoon. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog. Showers likely in the evening. A chance of showers after midnight. Vsby 1 to 3 NM. .WED...E winds around 10 kt. Gusts up to 20 kt in the morning. Waves 2 to 3 ft. .WED NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. Patchy fog after midnight. A chance of showers after midnight. .THU...S winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Waves around 2 ft. Showers likely. Patchy fog in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...N winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-020000- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 704 AM EDT Tue Sep 1 2026 .TODAY...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .WED...E winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 10 seconds. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 3 ft at 10 seconds. Patchy fog after midnight. A chance of showers after midnight with vsby 1 NM or less. .THU...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 5 seconds and SE 3 ft at 9 seconds. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 3 ft at 6 seconds. Showers likely in the evening. .FRI THROUGH SAT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 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. $$ ANZ281-020000- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 704 AM EDT Tue Sep 1 2026 .TODAY...SE winds 5 to 10 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: N 1 foot at 4 seconds and SW 1 foot at 5 seconds. A chance of showers. .TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers in the evening. .WED...E winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 9 seconds. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 2 ft at 10 seconds. Patchy fog after midnight. .THU...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 9 seconds. Showers. Patchy fog in the morning. .THU NIGHT...S winds around 10 kt with gusts up to 20 kt, becoming W after midnight. Seas around 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 5 seconds. A chance of showers. A chance of tstms in the evening. .FRI AND FRI NIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. .SAT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-020000- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 704 AM EDT Tue Sep 1 2026 .TODAY...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 4 ft. Wave Detail: E 3 ft at 4 seconds and N 1 foot at 4 seconds. A slight chance of showers this morning, then a chance of showers with isolated tstms this afternoon. Some tstms may produce heavy rainfall this afternoon. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers. .WED...E winds around 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 4 ft at 5 seconds and SE 2 ft at 11 seconds. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 3 ft at 5 seconds and SE 3 ft at 10 seconds. Patchy fog after midnight. .THU...SE winds 5 to 10 kt, becoming S in the afternoon. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 3 ft at 5 seconds. Showers likely. .THU NIGHT...W winds around 10 kt. Seas around 4 ft. Wave Detail: E 3 ft at 6 seconds and SW 2 ft at 5 seconds. A chance of showers. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 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. $$ ANZ283-020000- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 704 AM EDT Tue Sep 1 2026 .TODAY...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and N 1 foot at 3 seconds. A chance of showers. A slight chance of tstms this afternoon. Patchy fog this afternoon. Some tstms may produce heavy rainfall this afternoon with vsby 1 to 3 NM. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 5 seconds and SE 4 ft at 9 seconds. Patchy fog. Showers likely in the evening. A chance of showers after midnight. Vsby 1 to 3 NM. .WED...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SE 4 ft at 6 seconds and SE 2 ft at 11 seconds. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming SE 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: E 4 ft at 6 seconds and SE 4 ft at 10 seconds. A chance of showers after midnight. .THU...S winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and E 3 ft at 5 seconds. A chance of showers. .THU NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SW 2 ft at 5 seconds. A chance of showers. .FRI THROUGH SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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