Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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287 FZUS51 KBOX 170804 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 404 AM EDT Tue Sep 17 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-172100- 404 AM EDT Tue Sep 17 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres over New England will continue to provide dry, tranquil boating weather through much of Wed. Low pres near the Carolinas and mid-Atlantic coast then spreads a period of enhanced onshore easterly winds, building seas and periods of rain late Wed and into Thurs. High pres then returns for Fri into the weekend, with a continued enhanced east-northeast breeze. $$ ANZ250-172100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 404 AM EDT Tue Sep 17 2024 .TODAY...SW winds 5 to 10 kt, becoming S this afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy drizzle after midnight. .WED...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning. Patchy drizzle in the morning with vsby 1 to 3 NM. .WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at 11 seconds. A chance of showers. Vsby 1 to 3 NM after midnight. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 8 seconds and E 4 ft at 7 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-172100- Massachusetts Bay and Ipswich Bay- 404 AM EDT Tue Sep 17 2024 .TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SE 1 foot at 4 seconds. Patchy drizzle after midnight. .WED...SE winds 5 to 10 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. Patchy drizzle in the morning with vsby 1 to 3 NM. .WED NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 2 ft at 11 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 10 seconds and NE 3 ft at 6 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 4 ft at 8 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 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. $$ ANZ231-172100- Cape Cod Bay- 404 AM EDT Tue Sep 17 2024 .TODAY...W winds around 5 kt, becoming SE this afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and E 1 foot at 7 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 7 seconds. Patchy drizzle after midnight. .WED...E winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SE 1 foot at 12 seconds. Patchy drizzle in the morning. .WED NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers. Vsby 1 to 3 NM after midnight. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and E 2 ft at 11 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and N 2 ft at 3 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-172100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 404 AM EDT Tue Sep 17 2024 .TODAY...S winds around 5 kt, becoming SE this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 1 foot at 12 seconds. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 1 foot at 12 seconds. Patchy drizzle after midnight. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at 12 seconds. Patchy drizzle in the morning, then a chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at 11 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 8 seconds and NE 4 ft at 7 seconds. A chance of showers. Vsby 1 to 3 NM. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Wave Detail: NE 5 ft at 7 seconds and SE 4 ft at 9 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 7 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. $$ ANZ255-172100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 404 AM EDT Tue Sep 17 2024 .TODAY...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds. .TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 1 foot at 12 seconds. Patchy drizzle after midnight. .WED...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and SE 1 foot at 12 seconds. A chance of showers. Patchy drizzle in the morning. .WED NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and E 1 foot at 3 seconds. Showers likely. Vsby 1 to 3 NM. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 8 seconds and NE 3 ft at 5 seconds. A chance of showers. Vsby 1 to 3 NM. .FRI...NE winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 6 seconds and SE 3 ft at 9 seconds. A chance of showers. .FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT AND SAT NIGHT...NE winds 20 to 25 kt. Seas 5 to 7 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-172100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 404 AM EDT Tue Sep 17 2024 .TODAY...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and SE 1 foot at 13 seconds. .WED...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and SE 1 foot at 12 seconds. A chance of showers. Vsby 1 to 3 NM in the afternoon. .WED NIGHT...NE winds around 15 kt. Gusts up to 20 kt in the evening. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 8 seconds and SE 1 foot at 12 seconds. Showers likely, mainly in the evening. Patchy fog in the evening. Vsby 1 to 3 NM. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 8 seconds and NE 2 ft at 4 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 5 seconds and SE 4 ft at 8 seconds. A chance of showers. .FRI NIGHT AND SAT...NE winds 15 to 20 kt, increasing to 20 to 25 kt. Gusts up to 30 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds 20 to 25 kt. Seas 5 to 7 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. $$ ANZ232-172100- Nantucket Sound- 404 AM EDT Tue Sep 17 2024 .TODAY...NE winds around 5 kt, becoming SE this afternoon. Seas around 2 ft. Wave Detail: E 1 foot at 7 seconds and SE 1 foot at 9 seconds. .TONIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 2 seconds. Patchy drizzle after midnight. .WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 1 foot at 7 seconds and SE 1 foot at 12 seconds. Patchy drizzle in the morning, then a chance of showers in the afternoon. .WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM. .THU AND THU NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 7 seconds. A chance of showers through the day. A chance of showers after midnight. Vsby 1 to 3 NM. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 20 to 25 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-172100- Vineyard Sound- 404 AM EDT Tue Sep 17 2024 .TODAY...N winds around 5 kt, becoming S this afternoon. Seas 1 foot or less. Wave Detail: SE 1 foot at 9 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave Detail: SE 1 foot at 9 seconds and SE 1 foot at 13 seconds. Patchy drizzle after midnight. .WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers. Patchy drizzle in the morning. .WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 NM. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 7 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE 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 SE 2 ft at 8 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ234-172100- Buzzards Bay- 404 AM EDT Tue Sep 17 2024 .TODAY...N winds around 5 kt, becoming S this afternoon. Seas 1 foot or less. Wave Detail: E 1 foot at 7 seconds and SE 1 foot at 9 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds. Patchy drizzle after midnight. .WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers. Patchy drizzle in the morning. .WED NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers. Vsby 1 to 3 NM in the evening. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 7 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers. .FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT AND SAT NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-172100- Rhode Island Sound- 404 AM EDT Tue Sep 17 2024 .TODAY...NE winds around 5 kt, becoming SE this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 1 foot at 13 seconds. Patchy drizzle after midnight. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers. Patchy drizzle in the morning. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .THU AND THU NIGHT...NE 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 NE 2 ft at 4 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 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. $$ ANZ237-172100- Block Island Sound- 404 AM EDT Tue Sep 17 2024 .TODAY...NE winds around 5 kt, becoming E this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 1 foot at 12 seconds. Patchy drizzle after midnight. .WED...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers. Patchy drizzle in the morning. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 1 foot at 3 seconds. A chance of showers. Vsby 1 to 3 NM in the evening. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 4 seconds. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 4 seconds. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-172100- Boston Harbor- 404 AM EDT Tue Sep 17 2024 .TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Waves 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. Patchy drizzle after midnight. .WED...S winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less. Patchy drizzle in the morning. .WED NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Waves 1 foot or less. A chance of showers. .THU AND THU NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 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. $$ ANZ236-172100- Narragansett Bay- 404 AM EDT Tue Sep 17 2024 .TODAY...N winds around 5 kt, becoming S this afternoon. Waves around 2 ft. Patchy fog this morning with vsby 1 to 3 NM. .TONIGHT...S winds around 5 kt, becoming E around 5 kt after midnight. Waves around 2 ft. Patchy drizzle after midnight. .WED...E winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. Patchy drizzle in the morning. .WED NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers through the day. A chance of showers after midnight. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston