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 Taunton MA 716 PM EDT Fri Aug 18 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-191200- 716 PM EDT Fri Aug 18 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will approach the waters from the west tonight, prompting showers and scattered thunderstorms with areas of fog. The front will push thru the waters Saturday, bringing mainly dry conditions for the day. High pressure will return with dry weather during Saturday night through Tuesday. A cold front will then approach the waters midweek. 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. $$ ANZ250-191200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers. Isolated tstms. Some tstms may produce heavy rainfall this evening. Vsby 1 to 3 NM. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-191200- Massachusetts Bay and Ipswich Bay- 716 PM EDT Fri Aug 18 2017 .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Showers. Isolated tstms. Some tstms may produce heavy rainfall this evening. Vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. .WED...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .WED NIGHT...W winds 5 to 10 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. $$ ANZ231-191200- Cape Cod Bay- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Isolated tstms. Showers. Vsby 1 to 3 NM. .SAT...S winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds around 5 kt. Seas 1 foot or less. .MON...W winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-191200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Isolated tstms. A chance of showers this evening, then showers after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .SAT...S winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .WED NIGHT...W 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. $$ ANZ255-191200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Isolated tstms. A chance of showers this evening, then showers after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .SAT...SW winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .SUN...W winds 10 to 15 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .WED...SW winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-191200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Isolated tstms. Showers this evening, then a chance of showers after midnight. Vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 15 to 20 kt. Seas 3 to 5 ft. .WED...SW winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 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. $$ ANZ232-191200- Nantucket Sound- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Isolated tstms. A chance of showers this evening, then showers after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .SUN...W winds 5 to 10 kt. Seas around 2 ft. Patchy fog. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED...SW winds 15 to 20 kt. Seas 2 to 4 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-191200- Vineyard Sound- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Showers with isolated tstms. Vsby 1 to 3 NM. .SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds around 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED...SW winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 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. $$ ANZ234-191200- Buzzards Bay- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers with isolated tstms. Vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Patchy fog. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON...SW winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE...SW winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-191200- Rhode Island Sound- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Showers with isolated tstms. Vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .WED NIGHT...W winds 10 to 15 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. $$ ANZ237-191200- Block Island Sound- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TONIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Isolated tstms. Showers this evening, then a chance of showers after midnight. Vsby 1 to 3 NM. .SAT...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .WED NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-191200- Boston Harbor- 716 PM EDT Fri Aug 18 2017 .TONIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Waves around 2 ft. Patchy fog. Showers with isolated tstms. Vsby 1 to 3 NM. .SAT...SW winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...SW winds around 5 kt. Waves 1 foot or less. .SUN...W winds around 5 kt. Waves 1 foot or less. .SUN NIGHT...W winds around 5 kt. Waves 1 foot or less. .MON...W winds around 5 kt. Waves 1 foot or less. .MON NIGHT...SW winds around 5 kt. Waves 1 foot or less. .TUE...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .WED...SW winds around 10 kt. Waves 1 foot or less. A chance of showers. .WED NIGHT...NW 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. $$ ANZ236-191200- Narragansett Bay- 716 PM EDT Fri Aug 18 2017 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY... .TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog. Showers. Isolated tstms. Some tstms may produce heavy rainfall this evening. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .SAT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .SUN...W winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...W winds around 5 kt. Waves 1 foot or less. .MON...W winds 5 to 10 kt. Waves 1 foot or less. .MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE...SW winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .WED...SW winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers. .WED NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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.