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 221217 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 716 AM EST Fri Feb 22 2019 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-230100- 716 AM EST Fri Feb 22 2019 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres builds over the waters through Sat. A warm front will approach the waters on Sun, bringing widespread rain and strong S-SE winds across the waters. A cold front passes by Mon. Another high pres approaches from the W Tue. 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. $$ ANZ250-230100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 AM EST Fri Feb 22 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING... .TODAY...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. Rain likely with a chance of snow. .SUN...SE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. Rain. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt, becoming W 25 to 30 kt with gusts up to 40 kt after midnight. Seas 6 to 9 ft. .MON...W winds 25 to 35 kt with gusts up to 45 kt. Seas 7 to 10 ft. .MON NIGHT...NW winds 25 to 35 kt with gusts up to 45 kt. Seas 7 to 10 ft. A chance of light freezing spray. .TUE...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 8 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of light freezing spray. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-230100- Massachusetts Bay and Ipswich Bay- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 10 to 15 kt, diminishing to 5 to 10 kt this afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .TONIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain with a chance of snow. .SUN...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain. .SUN NIGHT...SW winds 15 to 20 kt, becoming W 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 4 to 6 ft. .MON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 6 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. A chance of light freezing spray. .TUE...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of light freezing spray. 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. $$ ANZ231-230100- Cape Cod Bay- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 10 to 15 kt, diminishing to 5 to 10 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .TONIGHT...N winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .SAT...N winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Rain with a chance of snow. .SUN...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain. .SUN NIGHT...SW winds 15 to 20 kt, becoming W 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 3 to 5 ft. .MON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 7 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 7 ft. A chance of light freezing spray. .TUE...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of light freezing spray. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-230100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 AM EST Fri Feb 22 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EST TODAY... .TODAY...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TONIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. .SAT...N winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. Rain likely. .SUN...SE winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 7 ft. Rain. .SUN NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt, becoming W 25 to 30 kt with gusts up to 45 kt after midnight. Seas 6 to 9 ft, except 9 to 14 ft S and E of Nantucket. .MON...W winds 25 to 35 kt with gusts up to 50 kt. Seas 9 to 12 ft, except 11 to 16 ft S and E of Nantucket. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 45 kt. Seas 9 to 12 ft. A chance of light freezing spray. .TUE...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of light freezing spray. 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. $$ ANZ255-230100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 AM EST Fri Feb 22 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EST TODAY... .TODAY...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Rain. .SUN...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Rain. .SUN NIGHT...W winds 20 to 25 kt with gusts up to 35 kt, increasing to 25 to 30 kt with gusts up to 50 kt after midnight. Seas 8 to 13 ft. .MON...W winds 25 to 35 kt with gusts up to 50 kt. Seas 10 to 15 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 45 kt. Seas 8 to 11 ft. .TUE...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-230100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 AM EST Fri Feb 22 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EST TODAY... .TODAY...NW winds 10 to 15 kt. Gusts up to 25 kt this morning. Seas 4 to 6 ft. .TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Rain. .SUN...SE winds 15 to 20 kt, becoming SW in the afternoon. Gusts up to 30 kt. Seas 5 to 8 ft. Rain. .SUN NIGHT...W winds 25 to 30 kt. Gusts up to 40 kt, increasing to 50 kt after midnight. Seas 9 to 12 ft. .MON...W winds 25 to 35 kt with gusts up to 50 kt. Seas 9 to 14 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 45 kt. Seas 8 to 11 ft. .TUE...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. 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. $$ ANZ232-230100- Nantucket Sound- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...N winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt after midnight. Seas around 2 ft. Rain with a chance of snow. .SUN...SE winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Rain. .SUN NIGHT...W winds 20 to 25 kt. Gusts up to 30 kt, increasing to 40 kt after midnight. Seas 4 to 6 ft. .MON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 7 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 6 ft. A chance of light freezing spray. .TUE...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-230100- Vineyard Sound- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 5 to 10 kt. Gusts up to 20 kt this morning. Seas 2 to 3 ft. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...N winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt after midnight. Seas around 2 ft. Rain. .SUN...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain. .SUN NIGHT...W winds 20 to 25 kt. Gusts up to 30 kt, increasing to 45 kt after midnight. Seas 4 to 7 ft. .MON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 8 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 7 ft. A chance of light freezing spray. .TUE...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. 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. $$ ANZ234-230100- Buzzards Bay- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 5 to 10 kt. Gusts up to 20 kt this morning. Seas 2 to 3 ft. .TONIGHT...N winds around 5 kt. Seas 1 foot or less. .SAT...N winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Rain with a chance of snow. .SUN...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain. .SUN NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, increasing to 20 to 25 kt with gusts up to 40 kt after midnight. Seas 4 to 6 ft. .MON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 7 ft. .MON NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 5 ft. A chance of light freezing spray. .TUE...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-230100- Rhode Island Sound- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt this afternoon. Seas 3 to 5 ft. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. .SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Rain. .SUN...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Rain. .SUN NIGHT...W winds 20 to 25 kt with gusts up to 35 kt, increasing to 25 to 30 kt with gusts up to 45 kt after midnight. Seas 6 to 9 ft. .MON...W winds 25 to 30 kt with gusts up to 50 kt. Seas 7 to 10 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 8 ft. A chance of light freezing spray. .TUE...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. 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. $$ ANZ237-230100- Block Island Sound- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt this afternoon. Seas 2 to 4 ft. .TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...NE winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Rain. .SUN...SE winds 10 to 15 kt, becoming SW in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Rain. .SUN NIGHT...W winds 20 to 25 kt with gusts up to 35 kt, increasing to 25 to 30 kt with gusts up to 45 kt after midnight. Seas 6 to 9 ft. .MON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 6 to 9 ft. .MON NIGHT...NW winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 7 ft. A chance of light freezing spray. .TUE...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of light freezing spray. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-230100- Boston Harbor- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 10 to 15 kt. Gusts up to 20 kt this morning. Waves around 2 ft. .TONIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 foot or less. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. Rain and snow. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Rain. .SUN NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Waves around 2 ft. .MON...W winds 20 to 25 kt with gusts up to 40 kt. Waves around 2 ft. .MON NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt. Waves around 2 ft. .TUE...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. 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. $$ ANZ236-230100- Narragansett Bay- 716 AM EST Fri Feb 22 2019 .TODAY...NW winds 5 to 10 kt. Gusts up to 20 kt this morning. Waves 2 to 3 ft. .TONIGHT...N winds around 5 kt. Waves around 2 ft. .SAT...N winds around 5 kt, becoming S around 5 kt in the afternoon. Waves 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves around 2 ft. Rain with a chance of snow. .SUN...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. Rain. .SUN NIGHT...W winds 15 to 20 kt. Gusts up to 30 kt, increasing to 40 kt after midnight. Waves 3 to 5 ft, except 5 to 8 ft at the bay entrance. .MON...W winds 20 to 25 kt with gusts up to 40 kt. Waves 4 to 6 ft. .MON NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt. Waves 2 to 3 ft. .TUE...NW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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.