Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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276 FZUS51 KBOX 180203 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1003 PM EDT Fri May 17 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-181500- 1003 PM EDT Fri May 17 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Shower chances increase overnight tonight and Saturday as low pressure shifts back north. High pressure builds in late this weekend with dry conditions persisting through early next week. $$ ANZ250-181500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1003 PM EDT Fri May 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 9 seconds. A chance of rain. Patchy fog with vsby 1 to 3 NM. .SAT...NE winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM. .SAT NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM in the evening. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds. .MON NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-181500- Massachusetts Bay and Ipswich Bay- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds. A slight chance of rain, then a chance of rain. Patchy fog. .SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM in the evening. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds. Patchy fog in the morning. .SUN NIGHT AND MON...E winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds. .MON NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: E 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. 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. $$ ANZ231-181500- Cape Cod Bay- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: N 2 ft at 3 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM in the evening. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: N 2 ft at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds. .MON NIGHT...E winds around 5 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-181500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1003 PM EDT Fri May 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .OVERNIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 8 ft. Wave Detail: E 8 ft at 9 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 9 seconds. Patchy fog. A chance of rain. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 8 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 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. $$ ANZ255-181500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1003 PM EDT Fri May 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .OVERNIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 8 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM, decreasing to 1 NM or less. .SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: NE 6 ft at 9 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 8 seconds and N 1 foot at 4 seconds. Patchy fog. A chance of rain after midnight. Vsby 1 to 3 NM in the evening. .SUN...NE winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 7 seconds and N 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 7 seconds. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-181500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1003 PM EDT Fri May 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .OVERNIGHT...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 8 seconds. Patchy fog. A slight chance of rain, then a chance of rain with vsby 1 NM or less. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 9 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Patchy fog. Vsby 1 to 3 NM after midnight. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 8 seconds and N 1 foot at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 8 seconds. .MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds. .TUE THROUGH WED 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. $$ ANZ232-181500- Nantucket Sound- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 6 seconds. Patchy fog. A chance of rain. Vsby 1 NM or less. .SAT...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 8 seconds. Patchy fog. A chance of rain in the morning. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 7 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM. .SUN...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-181500- Vineyard Sound- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds. Patchy fog. A chance of rain. Vsby 1 to 3 NM. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds. Patchy fog. A chance of rain in the morning. Vsby 1 to 3 NM. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds. Patchy fog. A chance of rain after midnight. Vsby 1 to 3 NM in the evening. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas 1 foot or less. Wave Detail: E 1 foot at 6 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-181500- Buzzards Bay- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds. A slight chance of rain, then a chance of rain. Patchy fog with vsby 1 to 3 NM. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds. Patchy fog. A chance of rain in the morning. Vsby 1 to 3 NM. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds. Patchy fog. Vsby 1 to 3 NM in the evening. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: E 1 foot at 2 seconds and E 1 foot at 6 seconds, becoming S 1 foot at 2 seconds and E 1 foot at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-181500- Rhode Island Sound- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 7 seconds. A slight chance of rain, then a chance of rain. Patchy fog with vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM in the morning. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and N 1 foot at 4 seconds. Patchy fog. .SUN...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at 7 seconds. .MON NIGHT...E winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and E 1 foot at 3 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-181500- Block Island Sound- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. Patchy fog. A slight chance of rain. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Patchy fog. Vsby 1 to 3 NM in the morning. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. Patchy fog. Vsby 1 to 3 NM after midnight. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 8 seconds. Patchy fog in the morning. .SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds. .MON AND MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-181500- Boston Harbor- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt. Waves around 2 ft. A slight chance of rain, then a chance of rain. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. A chance of rain. .SAT NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. Patchy fog. A chance of rain. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog in the morning. .SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. .MON AND MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 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. $$ ANZ236-181500- Narragansett Bay- 1003 PM EDT Fri May 17 2024 .OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A slight chance of rain, then a chance of rain. Patchy fog. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM in the morning. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog in the morning with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 10 to 15 kt. Waves 2 to 3 ft. .MON NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Waves around 2 ft. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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