Coastal Waters Forecast
Issued by NWS Boston, MA

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703 FZUS51 KBOX 062003 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 403 PM EDT Thu Jun 6 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-070900- 403 PM EDT Thu Jun 6 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pres moves across the waters through this evening, exiting on Fri. A cold front sweeps across the waters Fri night followed by a wind shift to W through Sat. As series of weak fronts move across the waters Sun and Mon. $$ ANZ250-070900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 403 PM EDT Thu Jun 6 2024 .TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at 4 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .FRI...NW winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and S 1 foot at 2 seconds. .SAT...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and W 2 ft at 3 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 8 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-070900- Massachusetts Bay and Ipswich Bay- 403 PM EDT Thu Jun 6 2024 .TONIGHT...SE winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 1 foot at 9 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .FRI...NW winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and SE 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and S 1 foot at 2 seconds. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and E 2 ft at 9 seconds. .SAT NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and E 2 ft at 9 seconds. .SUN...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 9 seconds. A chance of showers in the morning, then showers likely in the afternoon. .SUN NIGHT...W winds around 10 kt. Seas around 2 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...SW winds 5 to 10 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. $$ ANZ231-070900- Cape Cod Bay- 403 PM EDT Thu Jun 6 2024 .TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and S 1 foot at 2 seconds. Patchy fog. A slight chance of showers this evening. A chance of showers after midnight. Vsby 1 NM or less. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 2 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 2 seconds. .SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 8 seconds. .SAT NIGHT...W winds around 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 8 seconds. .SUN AND SUN NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-070900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 403 PM EDT Thu Jun 6 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and S 2 ft at 4 seconds. Patchy fog. A slight chance of showers this evening, then a chance of showers after midnight. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...SW winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SW 1 foot at 3 seconds. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: S 4 ft at 8 seconds and W 2 ft at 4 seconds. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 8 seconds and W 2 ft at 4 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 2 ft at 4 seconds. A chance of showers through the night. .MON THROUGH TUE NIGHT...SW winds 5 to 10 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. $$ ANZ255-070900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 403 PM EDT Thu Jun 6 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds. .SAT...W winds 10 to 15 kt, becoming SW 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SW 4 ft at 5 seconds. .SAT NIGHT...SW winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds. .SUN...SW winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-070900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 403 PM EDT Thu Jun 6 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds. Patchy fog in the morning. .FRI NIGHT...W winds around 10 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 8 seconds. .SAT...W winds 10 to 15 kt, becoming SW 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: SW 4 ft at 7 seconds. .SAT NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 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 3 to 4 ft. .MON THROUGH TUE 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. $$ ANZ232-070900- Nantucket Sound- 403 PM EDT Thu Jun 6 2024 .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and S 2 ft at 8 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at 3 seconds. .SAT...W winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 8 seconds. .SAT NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 1 foot at 8 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 8 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-070900- Vineyard Sound- 403 PM EDT Thu Jun 6 2024 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 1 foot at 3 seconds. .SAT...W winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 3 ft at 8 seconds. .SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and S 3 ft at 8 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 7 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 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 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. $$ ANZ234-070900- Buzzards Bay- 403 PM EDT Thu Jun 6 2024 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and S 1 foot at 4 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .SAT...W winds 10 to 15 kt, becoming SW 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 8 seconds. .SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and S 2 ft at 8 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds. A chance of showers in the afternoon. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-070900- Rhode Island Sound- 403 PM EDT Thu Jun 6 2024 .TONIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SW 1 foot at 5 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .FRI...W winds around 5 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds. Patchy fog in the morning. .FRI NIGHT...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds. .SAT...W winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SW 3 ft at 5 seconds. .SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and W 3 ft at 5 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 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 2 to 4 ft. .MON THROUGH TUE 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. $$ ANZ237-070900- Block Island Sound- 403 PM EDT Thu Jun 6 2024 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds. Patchy fog in the morning. .FRI NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SW 1 foot at 3 seconds. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and W 2 ft at 3 seconds. .SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: S 3 ft at 8 seconds and W 2 ft at 4 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. A chance of showers in the afternoon. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-070900- Boston Harbor- 403 PM EDT Thu Jun 6 2024 .TONIGHT...E winds around 5 kt, becoming NW around 5 kt after midnight. Waves 1 foot or less. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .FRI...NW winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. Patchy fog in the morning with vsby 1 to 3 NM. .FRI NIGHT...S winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. A chance of showers in the morning, then showers likely in the afternoon. .SUN NIGHT...W winds around 10 kt. Waves 1 foot or less. A chance of showers in the evening. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. 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. $$ ANZ236-070900- Narragansett Bay- 403 PM EDT Thu Jun 6 2024 .TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves 2 to 3 ft. Patchy fog. A slight chance of showers with isolated tstms this evening. Vsby 1 NM or less. .FRI...SW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog in the morning. .FRI NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. .SAT...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .SAT NIGHT...W winds 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Waves 2 to 3 ft. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. A chance of showers. .SUN NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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