Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version |  Previous Version |  Graphics & Text |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
730 FZUS51 KBOX 092004 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 404 PM EDT Sun Jun 9 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-100900- 404 PM EDT Sun Jun 9 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Area of showers with 2-6 SM visby will continue to shift offshore through early tonight. SW winds around 15-20 kt to then shift to W/WNW late this afternoon into tonight, with decreasing speeds to around 10-15 kt. Seas around 2-4 ft. Could see another round of lighter rain showers toward early Mon AM but not enough to restrict visbys. Winds and seas to remain below SCA levels Mon and Mon night with WNW winds around 15-20 kt and seas 3 ft or less. $$ ANZ250-100900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 404 PM EDT Sun Jun 9 2024 .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 8 seconds. .MON...W winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 8 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .TUE...NW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at 3 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 2 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-100900- Massachusetts Bay and Ipswich Bay- 404 PM EDT Sun Jun 9 2024 .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming W 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at 8 seconds. Isolated showers after midnight. .MON...W winds 10 to 15 kt, becoming S 5 to 10 kt in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 2 ft at 3 seconds and E 1 foot at 8 seconds, becoming SW 1 foot at 3 seconds and E 1 foot at 8 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at 8 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 4 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI 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. $$ ANZ231-100900- Cape Cod Bay- 404 PM EDT Sun Jun 9 2024 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 7 seconds. .MON...W winds 5 to 10 kt, becoming SW with gusts up to 20 kt in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 6 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .MON NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .TUE...NW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .TUE NIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and SE 1 foot at 7 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-100900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 404 PM EDT Sun Jun 9 2024 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 4 seconds. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 2 ft at 4 seconds. .MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 4 seconds. .TUE NIGHT AND WED...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 4 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 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. $$ ANZ255-100900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 404 PM EDT Sun Jun 9 2024 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds. .MON...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. .TUE NIGHT AND WED...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. .THU AND THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...SW winds 15 to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-100900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds around 10 kt. Gusts up to 20 kt this evening. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 4 seconds. .MON...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .TUE...NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 6 seconds and SE 2 ft at 7 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. .THU AND THU NIGHT...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 S 3 ft at 7 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 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. $$ ANZ232-100900- Nantucket Sound- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 8 seconds. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. .TUE...W winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 4 seconds and SE 1 foot at 7 seconds. .TUE NIGHT AND WED...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and SE 1 foot at 8 seconds. .THU THROUGH FRI...SW winds 15 to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-100900- Vineyard Sound- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds. .MON...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. .TUE...W winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: S 1 foot at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 6 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds. .FRI 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. $$ ANZ234-100900- Buzzards Bay- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds. .TUE...W winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: S 1 foot at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 6 seconds. .THU THROUGH FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 1 foot at 7 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-100900- Rhode Island Sound- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds. .MON...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. .TUE...W winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. .TUE NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 3 seconds. .THU THROUGH FRI...SW winds 15 to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 15 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. $$ ANZ237-100900- Block Island Sound- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 4 seconds. .MON...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and SE 2 ft at 7 seconds. .TUE...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 5 seconds. .TUE NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 2 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-100900- Boston Harbor- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Waves around 2 ft this evening, then 1 foot or less. Isolated showers after midnight. .MON...W winds 5 to 10 kt, becoming SW in the afternoon. Waves 1 foot or less. .MON NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .TUE...NW winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .TUE NIGHT...S winds around 5 kt. Waves 1 foot or less. .WED AND WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI 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. $$ ANZ236-100900- Narragansett Bay- 404 PM EDT Sun Jun 9 2024 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Waves around 2 ft. .MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. .MON NIGHT...W winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Waves around 2 ft. .TUE...W winds around 5 kt, becoming SW in the afternoon. Waves around 2 ft. .TUE NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Waves around 2 ft. .WED AND WED NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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