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Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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551 FZUS51 KBOX 161405 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1004 AM EDT Tue Jul 16 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-170300- 1004 AM EDT Tue Jul 16 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Persistent SW winds gusting 20-25 knots through Wed. High dewpoints will bring continued low status and fog through Wed as well. Thunderstorms may approach the waters this afternoon, and again on wed afternoon. A cold front sweeps through Thursday clearing out the low status and fog. High pressure will bring light winds and dry conditions through the weekend. $$ ANZ250-170300- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 to 3 NM. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at 9 seconds. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at 9 seconds. .FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-170300- Massachusetts Bay and Ipswich Bay- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at 7 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers in the afternoon. .WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers. .THU...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds. .FRI THROUGH SAT NIGHT...SW winds 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. $$ ANZ231-170300- Cape Cod Bay- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 2 ft at 5 seconds and SW 1 foot at 2 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers in the evening. Showers likely after midnight. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and W 1 foot at 2 seconds. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 2 seconds. .FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-170300- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1004 AM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON THROUGH THURSDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .TONIGHT...SW winds around 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 4 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and W 1 foot at 4 seconds. A chance of showers in the evening. Showers likely after midnight. .THU...SW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and W 1 foot at 3 seconds. Showers likely in the morning. A chance of showers in the afternoon. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 4 ft at 9 seconds and W 1 foot at 3 seconds. .FRI THROUGH SAT NIGHT...SW winds 5 to 10 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. $$ ANZ255-170300- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1004 AM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON THROUGH THURSDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers in the evening, then showers likely with scattered tstms after midnight. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and W 1 foot at 3 seconds. Showers likely in the morning. A chance of showers in the afternoon. .THU NIGHT...W winds around 10 kt, becoming NW after midnight. Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds. A chance of showers in the evening. .FRI...N winds 5 to 10 kt. Seas 3 to 5 ft. .FRI NIGHT THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-170300- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1004 AM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON THROUGH THURSDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S 5 ft at 7 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S 6 ft at 8 seconds. A chance of showers in the evening, then showers likely with scattered tstms after midnight. .THU...W winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: S 6 ft at 8 seconds. Showers likely in the morning. A chance of showers in the afternoon. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds. .FRI THROUGH SAT NIGHT...SW 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. $$ ANZ232-170300- Nantucket Sound- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 6 seconds. .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 4 seconds. A chance of showers in the evening. Showers likely after midnight. .THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at 8 seconds. Showers likely, mainly in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at 3 seconds. .FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-170300- Vineyard Sound- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 2 ft at 6 seconds and SW 1 foot at 3 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SW 2 ft at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 2 ft at 4 seconds. A chance of showers in the evening. Showers likely after midnight. .THU...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 8 seconds and W 1 foot at 3 seconds. Showers likely, mainly in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 8 seconds and W 1 foot at 3 seconds. .FRI THROUGH SAT NIGHT...SW winds 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. $$ ANZ234-170300- Buzzards Bay- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and SW 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SW 2 ft at 4 seconds. A chance of showers in the evening. Showers likely after midnight. .THU...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 8 seconds and W 1 foot at 3 seconds. Showers likely, mainly in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 8 seconds and W 1 foot at 3 seconds. .FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-170300- Rhode Island Sound- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers in the evening. Showers likely after midnight. .THU...W winds around 10 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 8 seconds. Showers likely, mainly in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds. .FRI THROUGH SAT NIGHT...SW winds 5 to 10 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. $$ ANZ237-170300- Block Island Sound- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 2 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. Showers likely. Scattered tstms after midnight. .THU...W winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SE 1 foot at 9 seconds. Showers likely, mainly in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SE 1 foot at 9 seconds. .FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-170300- Boston Harbor- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 foot or less, then around 2 ft. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves 1 foot or less. .WED...SW winds 10 to 15 kt. Waves 1 foot or less. A chance of showers in the afternoon. .WED NIGHT...SW winds around 10 kt. Waves 1 foot or less. A chance of showers. .THU...W winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less. .FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. 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. $$ ANZ236-170300- Narragansett Bay- 1004 AM EDT Tue Jul 16 2024 .THIS AFTERNOON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Waves 2 to 4 ft. Patchy fog after midnight with vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 4 ft. A chance of showers in the evening. Showers likely after midnight. .THU...W winds 5 to 10 kt. Waves 2 to 4 ft. Showers likely, mainly in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 2 to 4 ft. .FRI THROUGH SAT NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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