Coastal Waters Forecast
Issued by NWS Boston, MA

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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
430 FZUS51 KBOX 142316 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 716 PM EDT Sat Jul 14 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-151200- 716 PM EDT Sat Jul 14 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres will shift south of the waters tonight and Sun while remnants of Beryl head north toward Nova Scotia. South to southwest winds will increase Mon and Tue ahead of an approaching cold front from the west. The cold front will sweep across the waters Tue night through early Wed. High pres will follow for Wed and Thu. 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. $$ ANZ250-151200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Isolated showers and tstms after midnight. .SUN...SE winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-151200- Massachusetts Bay and Ipswich Bay- 716 PM EDT Sat Jul 14 2018 .TONIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Scattered showers with isolated tstms after midnight. .SUN...SE winds around 5 kt, becoming E in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...S winds around 5 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON...SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Showers with tstms likely. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. 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. $$ ANZ231-151200- Cape Cod Bay- 716 PM EDT Sat Jul 14 2018 .TONIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft. Isolated showers and tstms after midnight. .SUN...S winds around 5 kt. Seas around 2 ft. .SUN NIGHT...S winds around 5 kt. Seas around 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 to 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. .TUE NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Seas around 2 ft. .THU...NE winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT...SW winds around 5 kt. Seas 1 to 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-151200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds around 5 kt. Seas around 3 ft. .SUN...S winds around 5 kt. Seas 2 to 4 ft. .SUN NIGHT...SW winds around 5 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. .THU...N winds 5 to 10 kt. Seas 3 to 5 ft. .THU NIGHT...S winds around 5 kt. Seas 2 to 4 ft. 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. $$ ANZ255-151200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas 2 to 4 ft. .SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...SW winds around 5 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .TUE...S winds 15 to 20 kt. Seas 4 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...W winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Seas 4 to 6 ft. .THU...NE winds 5 to 10 kt. Seas 3 to 5 ft. .THU NIGHT...S winds around 5 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-151200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Isolated showers and tstms after midnight. .SUN...SW winds 5 to 10 kt. Seas 3 to 4 ft. Scattered showers. .SUN NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 4 ft. .MON NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...SW winds 15 to 20 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 5 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers and tstms. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .THU...E winds 5 to 10 kt. Seas 4 to 5 ft. .THU NIGHT...S winds around 5 kt. Seas 2 to 4 ft. 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. $$ ANZ232-151200- Nantucket Sound- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Isolated showers and tstms after midnight. .SUN...SW winds around 5 kt. Seas around 2 ft. .SUN NIGHT...S winds around 5 kt. Seas around 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds around 5 kt, increasing to 5 to 10 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...S winds around 5 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-151200- Vineyard Sound- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Isolated showers and tstms after midnight. .SUN...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds around 5 kt, increasing to 5 to 10 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .THU...E winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...SW winds around 5 kt. Seas 1 to 2 ft. 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. $$ ANZ234-151200- Buzzards Bay- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Isolated showers and tstms after midnight. .SUN...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds around 5 kt, increasing to 5 to 10 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. .MON NIGHT...SW winds around 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...SW winds around 5 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-151200- Rhode Island Sound- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Isolated showers and tstms after midnight. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .THU...E winds 5 to 10 kt. Seas 3 to 5 ft. .THU NIGHT...SW winds around 5 kt. Seas 2 to 3 ft. 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. $$ ANZ237-151200- Block Island Sound- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Isolated showers and tstms after midnight. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers and tstms. .WED NIGHT...NW winds 5 to 10 kt. Seas 3 to 5 ft. .THU...E winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-151200- Boston Harbor- 716 PM EDT Sat Jul 14 2018 .TONIGHT...SE winds 5 to 10 kt, becoming S after midnight. Waves 1 foot or less. Scattered showers with isolated tstms after midnight. .SUN...E winds around 5 kt. Waves 1 foot or less. .SUN NIGHT...S winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .MON...SE winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...S winds around 5 kt. Waves around 2 ft. .TUE...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. Patchy fog. Showers with tstms likely. Some tstms may produce heavy rainfall. .TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds around 5 kt. Waves around 2 ft. A chance of showers and tstms. .WED NIGHT...N winds around 5 kt. Waves 1 foot or less. .THU...NE winds around 5 kt. Waves 1 foot or less. .THU NIGHT...SW winds around 5 kt. Waves 1 foot or less. 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. $$ ANZ236-151200- Narragansett Bay- 716 PM EDT Sat Jul 14 2018 .TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves 2 to 3 ft. Scattered showers with isolated tstms after midnight. .SUN...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Waves around 2 ft. A chance of showers. .SUN NIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...S winds around 5 kt, increasing to 5 to 10 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. Patchy fog. Showers with tstms likely. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Waves 2 to 4 ft. Showers with tstms likely. Some tstms may produce heavy rainfall. .WED...NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. .THU...E winds around 5 kt. Waves 2 to 3 ft. .THU NIGHT...SW winds around 5 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.