Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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388 FZUS51 KBOX 190652 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 252 AM EDT Sun May 19 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-191900- 252 AM EDT Sun May 19 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Light scattered showers with low ceilings and areas of fog continue this afternoon and evening as low pressure continues to spin well off shore to the east. Shower chances decrease for Sunday. High pressure builds in late Sunday with dry conditions persisting through early next week. $$ ANZ250-191900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 252 AM EDT Sun May 19 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and S 1 foot at 7 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and S 1 foot at 7 seconds. A chance of showers in the morning. Vsby 1 NM or less. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds. .MON...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds and SE 1 foot at 11 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and S 2 ft at 3 seconds. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at 8 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-191900- Massachusetts Bay and Ipswich Bay- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...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 and NE 1 foot at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds and NE 1 foot at 3 seconds. A chance of showers in the morning with vsby 1 NM or less. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds and NE 1 foot at 3 seconds. .MON...NE winds around 5 kt, becoming E in the afternoon. Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at 4 seconds. .WED THROUGH THU...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 E 2 ft at 8 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ231-191900- Cape Cod Bay- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and N 2 ft at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 7 seconds and N 2 ft at 4 seconds. A chance of showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: E 3 ft at 8 seconds and N 2 ft at 4 seconds. A chance of showers. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and N 1 foot at 4 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SE 1 foot at 10 seconds. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-191900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 252 AM EDT Sun May 19 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TONIGHT...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 and NE 1 foot at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 7 seconds and NE 1 foot at 3 seconds. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and NE 1 foot at 3 seconds. .MON...NE winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 8 seconds and SE 1 foot at 11 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and SW 2 ft at 3 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at 8 seconds. 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. $$ ANZ255-191900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 2 ft at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: E 4 ft at 7 seconds and NE 2 ft at 4 seconds. .SUN NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and NE 2 ft at 4 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .MON...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 1 foot at 3 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and SW 2 ft at 3 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 8 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-191900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and N 2 ft at 4 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...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 and N 2 ft at 4 seconds. .SUN NIGHT...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 and NE 2 ft at 4 seconds. .MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and N 1 foot at 3 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and SW 2 ft at 3 seconds. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 8 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. 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. $$ ANZ232-191900- Nantucket Sound- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at 4 seconds. A chance of showers. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and NE 1 foot at 3 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 8 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-191900- Vineyard Sound- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and NE 1 foot at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and E 1 foot at 7 seconds. A chance of showers in the morning with vsby 1 to 3 NM. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and E 1 foot at 7 seconds. .MON...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and NW 1 foot at 5 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 8 seconds and SE 1 foot at 11 seconds. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 foot at 8 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ234-191900- Buzzards Bay- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...NE winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and NE 1 foot at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers in the morning with vsby 1 to 3 NM. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 7 seconds. .MON...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 2 seconds and E 1 foot at 8 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 8 seconds and SE 1 foot at 11 seconds. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 8 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-191900- Rhode Island Sound- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...N 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 NE 2 ft at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 7 seconds. .MON...NE winds around 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 8 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ237-191900- Block Island Sound- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at 3 seconds. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at 3 seconds. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and NE 2 ft at 4 seconds. .MON...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and NE 1 foot at 3 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-191900- Boston Harbor- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft in the evening, then 1 foot or less. .MON...E winds 5 to 10 kt. Waves 1 foot or less. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-191900- Narragansett Bay- 252 AM EDT Sun May 19 2024 .REST OF TONIGHT...N winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt after midnight. Waves around 2 ft. .MON...NE winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .MON NIGHT THROUGH TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .WED THROUGH THU...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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