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 221116 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 716 AM EDT Sat Sep 22 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-230000- 716 AM EDT Sat Sep 22 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will move offshore this morning. High pres will build east from the Great Lakes this weekend with a strong high pres building over Quebec Mon, which will shift east toward Nova Scotia on Tue. A warm will lift north of the waters on Wed. 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. $$ ANZ250-230000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 AM EDT Sat Sep 22 2018 .TODAY...W winds 15 to 20 kt, becoming N 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. .TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds around 5 kt, becoming NE 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to 4 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-230000- Massachusetts Bay and Ipswich Bay- 716 AM EDT Sat Sep 22 2018 .TODAY...W winds 10 to 15 kt, becoming N this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SUN...N winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds around 5 kt, becoming NE 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to 4 ft. .MON...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM. 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. $$ ANZ231-230000- Cape Cod Bay- 716 AM EDT Sat Sep 22 2018 .TODAY...W winds 15 to 20 kt with gusts up to 30 kt, becoming N 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 4 ft. A slight chance of showers this morning. .TONIGHT...NE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. .SUN...NW winds around 5 kt. Seas 1 foot or less. .SUN NIGHT...SW winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-230000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 AM EDT Sat Sep 22 2018 .TODAY...W winds 15 to 20 kt, becoming N this afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. A slight chance of showers this morning. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. .SUN...NE winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...NW winds around 5 kt, becoming NE 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to 4 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .TUE...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .TUE NIGHT...SE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .WED...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ255-230000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .TODAY...W winds 15 to 20 kt, becoming N 10 to 15 kt this afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. A slight chance of showers this morning. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. .SUN...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...N winds around 5 kt, becoming NE 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .TUE...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .TUE NIGHT...SE winds around 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-230000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .TODAY...W winds 15 to 20 kt, becoming N 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. A slight chance of showers this morning. .TONIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .SUN...NE winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...W winds around 5 kt, becoming NE 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. .TUE...E winds around 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 6 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ232-230000- Nantucket Sound- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .TODAY...W winds 20 to 25 kt with gusts up to 30 kt, becoming N 10 to 15 kt with gusts up to 20 kt this afternoon. Seas 2 to 4 ft. A slight chance of showers this morning. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. .SUN...NE winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SUN NIGHT...W winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...SE winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-230000- Vineyard Sound- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .TODAY...W winds around 15 kt, becoming N this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers this morning. .TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .SUN...NE winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SUN NIGHT...W winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ234-230000- Buzzards Bay- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .TODAY...W winds 15 to 20 kt with gusts up to 30 kt, becoming N 10 to 15 kt this afternoon. Seas 2 to 4 ft. .TONIGHT...NE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. .SUN...NE winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SUN NIGHT...W winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE...E winds 15 to 20 kt with gusts up to 25 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-230000- Rhode Island Sound- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .TODAY...W winds 10 to 15 kt, becoming N this afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. A slight chance of showers this morning. .TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .SUN...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ237-230000- Block Island Sound- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .TODAY...W winds 10 to 15 kt with gusts up to 25 kt, becoming N this afternoon. Seas 2 to 4 ft. .TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .SUN...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 25 kt after midnight. Seas around 2 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-230000- Boston Harbor- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .TODAY...W winds 10 to 15 kt, becoming N this afternoon. Gusts up to 20 kt. Waves around 2 ft. .TONIGHT...N winds around 5 kt. Waves 1 foot or less. .SUN...N winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .SUN NIGHT...W winds around 5 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 2 ft. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. .TUE...SE winds around 10 kt. Waves around 2 ft. A chance of showers. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds around 10 kt. Waves around 2 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. Showers likely. Vsby 1 to 3 NM. 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. $$ ANZ236-230000- Narragansett Bay- 716 AM EDT Sat Sep 22 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .TODAY...W winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt this afternoon. Waves 2 to 4 ft. .TONIGHT...NE winds 5 to 10 kt. Waves around 2 ft. .SUN...N winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .SUN NIGHT...W winds around 5 kt, becoming N with gusts up to 20 kt after midnight. Waves 1 foot or less. .MON...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TUE...E winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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.