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Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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688 FZUS51 KBOX 150505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 104 AM EDT Sat Jun 15 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-151800- 104 AM EDT Sat Jun 15 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Cold front moves across the waters overnight. High pressure builds over New England Saturday and Sunday, and then moves offshore Monday. $$ ANZ250-151800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at 3 seconds. Showers likely with isolated tstms. .SAT...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and SE 2 ft at 8 seconds. Showers likely in the morning. .SAT NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 10 seconds. .SUN...N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 3 ft at 9 seconds. .SUN NIGHT THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and NE 2 ft at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and S 2 ft at 4 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-151800- Massachusetts Bay and Ipswich Bay- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and W 1 foot at 3 seconds. Showers likely with isolated tstms. .SAT...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and E 2 ft at 8 seconds. Showers likely in the morning. .SAT NIGHT...NW 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: NE 2 ft at 4 seconds and E 1 foot at 8 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and E 1 foot at 9 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and S 2 ft at 3 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 11 seconds. 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. $$ ANZ231-151800- Cape Cod Bay- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 8 seconds. Showers likely with isolated tstms. .SAT...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SE 1 foot at 8 seconds. Showers likely in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and N 2 ft at 5 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 11 seconds and SW 1 foot at 2 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-151800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. Showers likely with isolated tstms. Vsby 1 NM or less. .SAT...N 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: N 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers in the morning with vsby 1 NM or less. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 10 seconds and N 2 ft at 5 seconds. .SUN...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and N 2 ft at 4 seconds. .SUN NIGHT THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and S 2 ft at 4 seconds. 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. $$ ANZ255-151800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 5 seconds. Showers likely with isolated tstms. Vsby 1 NM or less. .SAT...NW winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft, building to 3 to 5 ft in the afternoon. Wave Detail: W 2 ft at 5 seconds and SE 2 ft at 8 seconds, becoming S 4 ft at 10 seconds and NW 2 ft at 4 seconds. A chance of showers in the morning with vsby 1 NM or less. .SAT NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 10 seconds and NE 2 ft at 4 seconds. .SUN...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and N 1 foot at 4 seconds. .SUN NIGHT THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 11 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-151800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers with isolated tstms. Vsby 1 to 3 NM. .SAT...N winds 5 to 10 kt, becoming NE 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 9 seconds and NW 2 ft at 5 seconds. A chance of showers in the morning. .SAT NIGHT...SW winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 10 seconds and NE 1 foot at 3 seconds. .SUN...NE winds 10 to 15 kt, becoming E around 5 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and N 2 ft at 3 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 11 seconds. 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. $$ ANZ232-151800- Nantucket Sound- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 7 seconds. Showers likely with isolated tstms. Vsby 1 to 3 NM. .SAT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and SE 1 foot at 8 seconds. Showers likely in the morning. .SAT NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 4 seconds. .SUN...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 6 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-151800- Vineyard Sound- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 6 seconds and SE 1 foot at 15 seconds. Showers likely with isolated tstms. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and N 1 foot at 2 seconds. A chance of showers in the morning. .SAT NIGHT...NW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and S 2 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 12 seconds. 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. $$ ANZ234-151800- Buzzards Bay- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 6 seconds and SE 1 foot at 15 seconds. Showers likely with isolated tstms. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 1 foot at 2 seconds and NW 1 foot at 5 seconds. A chance of showers in the morning. .SAT NIGHT...N winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 12 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-151800- Rhode Island Sound- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 5 seconds. Showers likely with isolated tstms. .SAT...N winds 5 to 10 kt, becoming NE in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 9 seconds and N 1 foot at 2 seconds. A chance of showers in the morning. .SAT NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 10 seconds and SW 1 foot at 4 seconds. .SUN...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 12 seconds. 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. $$ ANZ237-151800- Block Island Sound- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 5 seconds. Showers likely with isolated tstms. .SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at 3 seconds. A chance of showers in the morning. .SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 10 seconds and NE 1 foot at 3 seconds. .SUN...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 1 foot at 3 seconds. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at 3 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at 12 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-151800- Boston Harbor- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds 5 to 10 kt. Waves 1 foot or less. Showers likely with isolated tstms. .SAT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Waves 1 foot or less. Showers likely in the morning. .SAT NIGHT...N winds 5 to 10 kt. Waves 1 foot or less. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE THROUGH WED 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. $$ ANZ236-151800- Narragansett Bay- 104 AM EDT Sat Jun 15 2024 .REST OF TONIGHT...W winds around 5 kt. Waves 1 foot or less. Showers likely with isolated tstms. .SAT...N winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of showers in the morning. .SAT NIGHT...N winds 5 to 10 kt. Waves around 2 ft. .SUN...N winds 5 to 10 kt, becoming SE in the afternoon. Waves 2 to 3 ft. .SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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