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
000 FZUS51 KBOX 182316 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 716 PM EDT Wed Jul 18 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-191200- 716 PM EDT Wed Jul 18 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure and pleasant weather persists through the remainder of the work week. Beginning Saturday night into most of next week, persistently breezy S winds ushers N warm, muggy air along with chances of showers and thunder- storms. 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. $$ ANZ250-191200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. .THU...N winds 10 to 15 kt, becoming NE around 5 kt in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...SW winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas 2 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .SUN...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-191200- Massachusetts Bay and Ipswich Bay- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Showers likely. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .MON...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 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. $$ ANZ231-191200- Cape Cod Bay- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...S winds around 5 kt, becoming SW after midnight. Seas 1 foot or less. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-191200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. .THU...N winds 5 to 10 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds around 5 kt, becoming SW after midnight. Seas 2 to 4 ft. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt, becoming SE 15 to 20 kt after midnight. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON...S winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 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. $$ ANZ255-191200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...SE winds around 5 kt, becoming SW after midnight. Seas around 3 ft. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt, becoming SE 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 15 to 20 kt. Seas 4 to 7 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON...S winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON NIGHT...S winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-191200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EDT Wed Jul 18 2018 .TONIGHT...E winds 5 to 10 kt, becoming N after midnight. Seas around 4 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to 4 ft. .THU NIGHT...SW winds around 5 kt. Seas around 3 ft. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds 15 to 20 kt. Seas 5 to 7 ft. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .MON...S winds around 15 kt with gusts up to 20 kt. Seas 5 to 6 ft. A chance of showers. .MON NIGHT...S winds around 15 kt with gusts up to 20 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. $$ ANZ232-191200- Nantucket Sound- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds around 5 kt. Seas 1 foot or less. .FRI...SW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt. Seas 2 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt, becoming SE 15 to 20 kt after midnight. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON...S winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-191200- Vineyard Sound- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...S winds around 5 kt. Seas 1 foot or less. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON...S winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 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. $$ ANZ234-191200- Buzzards Bay- 716 PM EDT Wed Jul 18 2018 .TONIGHT...NE winds around 5 kt, becoming N after midnight. Seas around 2 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds around 5 kt. Seas 1 foot or less. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .FRI NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-191200- Rhode Island Sound- 716 PM EDT Wed Jul 18 2018 .TONIGHT...S winds around 5 kt, becoming N 10 to 15 kt after midnight. Seas 2 to 4 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds around 5 kt. Seas 2 to 3 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 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. $$ ANZ237-191200- Block Island Sound- 716 PM EDT Wed Jul 18 2018 .TONIGHT...SW winds around 5 kt, becoming N after midnight. Seas 2 to 4 ft. .THU...NE winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds around 5 kt. Seas 2 to 3 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-191200- Boston Harbor- 716 PM EDT Wed Jul 18 2018 .TONIGHT...N winds 5 to 10 kt. Waves 1 foot or less. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .THU NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less. .FRI...SW winds around 5 kt, becoming SE around 5 kt in the afternoon. Waves 1 foot or less. .FRI NIGHT...SE winds around 5 kt. Waves 1 foot or less. .SAT...E winds 5 to 10 kt. Waves 1 foot or less. .SAT NIGHT...E winds 5 to 10 kt. Waves around 2 ft. Showers likely. .SUN...SE winds 5 to 10 kt. Waves around 2 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. 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. $$ ANZ236-191200- Narragansett Bay- 716 PM EDT Wed Jul 18 2018 .TONIGHT...NW winds around 5 kt, becoming N after midnight. Waves 2 to 3 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Waves 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .FRI NIGHT...S winds 5 to 10 kt, becoming SE after midnight. Waves around 2 ft. .SAT...E winds 5 to 10 kt. Waves 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN...S winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. .SUN NIGHT...S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .MON...S winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers. .MON NIGHT...S winds around 10 kt. Waves 2 to 3 ft. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

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