Coastal Waters Forecast
Issued by NWS Boston, MA

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208 FZUS51 KBOX 140506 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue May 14 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-141800- 105 AM EDT Tue May 14 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres over the N Atlc off the Mid Atlc coast will result in an increasing S to SW wind tonight into Tue. A low pres should move E from the Mid Atlc coast Wed night into Thu, shifting winds to the SE to E across the waters. Depending on how close this low pres gets Thu, there could be some gale force gusts across the southern outer coastal waters. This low pres slowly moves farther out to sea through Sat. $$ ANZ250-141800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers. Vsby 1 to 3 NM. .TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 6 seconds and E 2 ft at 8 seconds. .TUE NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 6 seconds and E 1 foot at 8 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .WED...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT...SE winds around 10 kt, becoming E after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 10 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SE 3 ft at 4 seconds and SE 3 ft at 9 seconds. A chance of showers. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. .FRI NIGHT THROUGH SAT NIGHT...NE winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-141800- Massachusetts Bay and Ipswich Bay- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and E 2 ft at 8 seconds. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and E 1 foot at 8 seconds. A chance of showers after midnight. .WED...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT THROUGH THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 4 seconds and E 2 ft at 7 seconds. A chance of showers. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 9 seconds. .FRI NIGHT THROUGH SAT NIGHT...NE winds around 10 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. $$ ANZ231-141800- Cape Cod Bay- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and SE 1 foot at 7 seconds. A slight chance of showers. .TUE...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 7 seconds. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .WED...S winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at 6 seconds, becoming SE 1 foot at 3 seconds and SE 1 foot at 7 seconds. A chance of showers. .WED NIGHT THROUGH THU NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE 2 ft at 3 seconds and S 2 ft at 9 seconds. A chance of showers. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and N 2 ft at 4 seconds. .SAT AND SAT NIGHT...NE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-141800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. Patchy fog. A slight chance of showers. Vsby 1 to 3 NM. .TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. .TUE NIGHT...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 SE 2 ft at 7 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .WED...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 7 seconds. A chance of showers in the afternoon. .WED NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 9 seconds, becoming SE 2 ft at 4 seconds and E 2 ft at 10 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S 5 ft at 9 seconds and SE 4 ft at 5 seconds. A chance of showers. .FRI THROUGH SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds around 10 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. $$ ANZ255-141800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds and E 2 ft at 8 seconds. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 12 seconds. .WED...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT...E winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: SE 3 ft at 5 seconds and E 1 foot at 8 seconds, becoming SE 4 ft at 5 seconds and S 3 ft at 9 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: SE 5 ft at 5 seconds and S 5 ft at 10 seconds. A chance of showers. .FRI...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .FRI NIGHT AND SAT...NE winds 10 to 15 kt. Gusts up to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds around 10 kt. Seas 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-141800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: SE 3 ft at 5 seconds and SE 1 foot at 12 seconds, becoming SE 4 ft at 5 seconds and S 4 ft at 9 seconds. Showers likely, mainly in the evening. .THU AND THU NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. Wave Detail: E 6 ft at 7 seconds and S 5 ft at 10 seconds. A chance of showers. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT AND SAT NIGHT...NE winds around 10 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. $$ ANZ232-141800- Nantucket Sound- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 1 foot at 7 seconds. .TUE NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .WED...S winds around 10 kt. Seas around 2 ft. Wave Detail: SE 1 foot at 4 seconds and SE 1 foot at 7 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 2 ft at 3 seconds and SE 1 foot at 6 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SE 3 ft at 4 seconds and S 2 ft at 10 seconds. A chance of showers. .FRI THROUGH SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...NE winds around 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-141800- Vineyard Sound- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TUE...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 1 foot at 7 seconds. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .WED...S winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 6 seconds. A chance of showers. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 3 ft at 4 seconds and S 3 ft at 10 seconds. A chance of showers. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers in the evening. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT AND SAT NIGHT...NE winds around 10 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. $$ ANZ234-141800- Buzzards Bay- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 12 seconds. Patchy fog after midnight. A chance of showers after midnight with vsby 1 to 3 NM. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. A chance of showers. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT THROUGH THU NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and E 2 ft at 9 seconds. A chance of showers. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and NE 2 ft at 3 seconds. .SAT AND SAT NIGHT...NE winds around 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-141800- Rhode Island Sound- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 13 seconds. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .WED...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT...E winds 10 to 15 kt, becoming NE 15 to 20 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 3 ft at 5 seconds and SE 1 foot at 12 seconds, becoming E 3 ft at 5 seconds and S 3 ft at 9 seconds. A chance of showers. .THU AND THU NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 10 seconds and E 4 ft at 5 seconds. A chance of showers. .FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT AND SAT NIGHT...NE winds around 10 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. $$ ANZ237-141800- Block Island Sound- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .WED...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers in the morning, then showers likely in the afternoon. Vsby 1 to 3 NM in the morning. .WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 2 ft at 4 seconds and E 1 foot at 7 seconds, becoming SE 3 ft at 5 seconds and S 3 ft at 9 seconds. Showers likely, mainly in the evening. .THU AND THU NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 10 seconds and E 4 ft at 5 seconds. A chance of showers. .FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT AND SAT NIGHT...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-141800- Boston Harbor- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .TUE...S winds around 10 kt, increasing to around 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. A chance of showers. .WED NIGHT THROUGH THU NIGHT...NE winds 15 to 20 kt. Waves 2 to 3 ft. A chance of showers. .FRI...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI NIGHT THROUGH SAT NIGHT...NE winds around 10 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. $$ ANZ236-141800- Narragansett Bay- 105 AM EDT Tue May 14 2024 .REST OF TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. .TUE...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Waves around 2 ft. Patchy fog after midnight. A chance of showers after midnight with vsby 1 to 3 NM. .WED...S winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM in the morning. .WED NIGHT THROUGH THU NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. A chance of showers. .FRI AND FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Waves 2 to 3 ft. .SAT AND SAT NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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