Coastal Waters Forecast
Issued by NWS Boston, MA

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629 FZUS51 KBOX 090505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 104 AM EDT Sun Jun 9 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-091800- 104 AM EDT Sun Jun 9 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... A weak low pressure system will bring rain on Sunday, followed by a cold front on Monday. Weak high pressure builds in Wednesday into late week. $$ ANZ250-091800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 8 seconds. .SUN...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 8 seconds. .MON...W winds 10 to 15 kt, becoming SW 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 8 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at 3 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-091800- Massachusetts Bay and Ipswich Bay- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and S 1 foot at 7 seconds. .SUN...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 1 foot at 3 seconds and S 1 foot at 7 seconds, becoming NW 1 foot at 3 seconds and S 1 foot at 4 seconds. A chance of showers in the morning. Showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: W 1 foot at 2 seconds and S 1 foot at 7 seconds. .MON...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .MON NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 8 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and S 1 foot at 5 seconds. .WED THROUGH THU 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. $$ ANZ231-091800- Cape Cod Bay- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. .SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. Showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. .MON...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds, becoming SW 1 foot at 3 seconds and S 1 foot at 7 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 7 seconds. .TUE AND TUE NIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .WED THROUGH THU NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-091800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 104 AM EDT Sun Jun 9 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .SUN...SW winds 10 to 15 kt, increasing to 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: S 3 ft at 7 seconds and W 1 foot at 4 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 4 seconds. .MON...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 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. $$ ANZ255-091800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 104 AM EDT Sun Jun 9 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and E 1 foot at 8 seconds. .SUN...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: SW 3 ft at 6 seconds and E 1 foot at 8 seconds, becoming SW 5 ft at 6 seconds and E 1 foot at 9 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and W 1 foot at 3 seconds. .MON...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 2 ft at 3 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-091800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 104 AM EDT Sun Jun 9 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and E 1 foot at 8 seconds. .SUN...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 8 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds. .MON...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and E 1 foot at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at 4 seconds. .WED THROUGH THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 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. $$ ANZ232-091800- Nantucket Sound- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and S 1 foot at 7 seconds. .SUN...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at 7 seconds. .MON...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 1 foot at 7 seconds. .MON NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 7 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-091800- Vineyard Sound- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and E 1 foot at 9 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and E 1 foot at 9 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and W 1 foot at 3 seconds. .MON...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and SE 1 foot at 8 seconds. .WED THROUGH THU 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. $$ ANZ234-091800- Buzzards Bay- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 4 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and E 1 foot at 9 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and W 1 foot at 3 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SW 2 ft at 7 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SW 2 ft at 6 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and E 1 foot at 8 seconds. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-091800- Rhode Island Sound- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and E 1 foot at 8 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and E 1 foot at 8 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds around 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. .MON...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .MON NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at 3 seconds. .TUE AND TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds. .WED THROUGH THU...SW winds 10 to 15 kt. Seas around 2 ft. .THU NIGHT...SW winds 10 to 15 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. $$ ANZ237-091800- Block Island Sound- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. .SUN...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. .MON...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds. .TUE AND TUE NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 2 seconds. .WED THROUGH THU...SW winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT...SW winds around 10 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-091800- Boston Harbor- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds around 10 kt. Waves 1 foot or less. .SUN...SW winds 5 to 10 kt, becoming NW in the afternoon. Waves 1 foot or less. Showers likely. Vsby 1 NM or less in the afternoon. .SUN NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .MON...W winds 5 to 10 kt. Waves 1 foot or less. .MON NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .TUE AND TUE NIGHT...SW winds around 5 kt. Waves 1 foot or less. .WED THROUGH THU NIGHT...SW winds 5 to 10 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. $$ ANZ236-091800- Narragansett Bay- 104 AM EDT Sun Jun 9 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .SUN...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. A chance of showers in the afternoon. .SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft. .MON...W winds 5 to 10 kt. Waves around 2 ft. .MON NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft. .TUE AND TUE NIGHT...W winds 5 to 10 kt. Waves around 2 ft. .WED THROUGH THU NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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