Coastal Waters Forecast
Issued by NWS Boston, MA

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283 FZUS51 KBOX 240517 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 116 AM EDT Wed Apr 24 2019 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-241800- 116 AM EDT Wed Apr 24 2019 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will sweep across the waters overnight into Wednesday morning. High pressure builds across the region Thursday while a more potent cold front slides across the waters Friday into Saturday with additional rains. High pressure returns briefly while additional showers are possible late Sunday. Quiet weather potentially returns for early next week. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the Current Hazards link above the map on the left. $$ ANZ250-241800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 AM EDT Wed Apr 24 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY... .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Patchy fog. Showers likely with isolated tstms. Vsby 1 to 3 NM. .WED...W winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 4 to 6 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .THU...NW winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 4 ft. .THU NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. .FRI...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers. .FRI NIGHT...S winds 10 to 15 kt, becoming W after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Showers. Vsby 1 to 3 NM. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SW winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-241800- Massachusetts Bay and Ipswich Bay- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Showers with isolated tstms. Vsby 1 to 3 NM. .WED...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers. .FRI NIGHT...S winds 10 to 15 kt, becoming W after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Showers. .SAT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas 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. $$ ANZ231-241800- Cape Cod Bay- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers with isolated tstms. Vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .WED NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers. Vsby 1 to 3 NM. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-241800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 AM EDT Wed Apr 24 2019 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. Patchy fog. Vsby 1 to 3 NM. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .THU...NW winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers. .FRI NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Showers. Vsby 1 to 3 NM. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 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. $$ ANZ255-241800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 AM EDT Wed Apr 24 2019 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 5 to 7 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Showers. Vsby 1 to 3 NM. .SAT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...W winds around 15 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-241800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 AM EDT Wed Apr 24 2019 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. A slight chance of showers. .WED...SW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 6 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM. .FRI NIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 5 to 7 ft. Showers likely. .SAT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 8 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. $$ ANZ232-241800- Nantucket Sound- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A slight chance of showers with isolated tstms. Vsby 1 to 3 NM. .WED...SW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers. Vsby 1 to 3 NM. .SAT...W winds 15 to 20 kt with gusts up to 30 kt. Seas around 3 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-241800- Vineyard Sound- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers with isolated tstms. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .WED NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas 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. $$ ANZ234-241800- Buzzards Bay- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers with isolated tstms. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-241800- Rhode Island Sound- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers with isolated tstms. .WED...SW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .FRI...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Showers. Vsby 1 to 3 NM. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. Winds and seas 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. $$ ANZ237-241800- Block Island Sound- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers with isolated tstms. .WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. .THU...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Showers. Vsby 1 to 3 NM. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-241800- Boston Harbor- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 10 to 15 kt. Waves 2 to 3 ft. Patchy fog. Showers with isolated tstms. .WED...SW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 20 kt. Waves around 2 ft. .WED NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .THU...NW winds 5 to 10 kt, becoming SE in the afternoon. Waves 1 foot or less. .THU NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .FRI...SE winds 5 to 10 kt. Waves 2 to 3 ft. Showers. .FRI NIGHT...S winds around 10 kt, becoming W with gusts up to 20 kt after midnight. Waves around 2 ft. Showers. .SAT...W winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers. .SAT NIGHT...W winds 10 to 15 kt. Waves 1 foot or less. .SUN...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-241800- Narragansett Bay- 116 AM EDT Wed Apr 24 2019 .REST OF TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers with isolated tstms. .WED...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. .WED NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. .THU...NW winds around 5 kt, becoming SW in the afternoon. Waves around 2 ft. .THU NIGHT...S winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .FRI...S winds 5 to 10 kt. Waves 2 to 4 ft. Showers. .FRI NIGHT...SW winds around 10 kt. Gusts up to 20 kt after midnight. Waves 2 to 4 ft. Showers. .SAT...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .SAT NIGHT...W winds 10 to 15 kt. Waves 2 to 3 ft. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

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