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 170017 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 716 PM EST Tue Jan 16 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-171300- 716 PM EST Tue Jan 16 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pres will develop off the mid Atlc coast late today, then will push across the waters tonight and Wed. Another high will build S of the waters Thu through Sat. 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. $$ ANZ250-171300- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EST Tue Jan 16 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...S winds 5 to 10 kt. Seas 4 to 6 ft. Snow with a chance of rain after midnight with vsby 1 NM or less. .WED...SE winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Gusts up to 20 kt. Seas 4 to 7 ft. Rain. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of light freezing spray. .THU...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. A chance of light freezing spray. .THU NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...W winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds around 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-171300- Massachusetts Bay and Ipswich Bay- 716 PM EST Tue Jan 16 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST WEDNESDAY... .TONIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. Snow with a chance of rain after midnight with vsby 1 to 3 NM. .WED...E winds 5 to 10 kt, becoming NE in the afternoon. Seas 3 to 5 ft. Rain and snow. Vsby 1 NM or less. .WED NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of light freezing spray. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt with gusts up to 20 kt. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. 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. $$ ANZ231-171300- Cape Cod Bay- 716 PM EST Tue Jan 16 2018 .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Snow after midnight with vsby 1 NM or less. .WED...E winds 5 to 10 kt, becoming S in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Rain. Vsby 1 to 3 NM. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt. Gusts up to 25 kt after midnight. Seas 2 to 3 ft. .SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-171300- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EST Tue Jan 16 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...SE winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas 4 to 7 ft. Rain with snow likely after midnight with vsby 1 NM or less. .WED...E winds 10 to 15 kt, becoming S in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. Rain. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of light freezing spray. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. .SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN NIGHT...W winds 5 to 10 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. $$ ANZ255-171300- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EST Tue Jan 16 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. Rain and snow after midnight with vsby 1 to 3 NM. .WED...E winds 10 to 15 kt, becoming S in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Rain. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of freezing spray. .THU NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 7 ft. .FRI...W winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt in the afternoon. Seas 4 to 7 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-171300- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EST Tue Jan 16 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 4 to 6 ft. A slight chance of rain this evening, then rain after midnight. .WED...E winds 10 to 15 kt, becoming SW in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. Rain. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of light freezing spray. .THU...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of light freezing spray. .THU NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .FRI...W winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt in the afternoon. Seas 4 to 7 ft. .FRI NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SAT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds 5 to 10 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. $$ ANZ232-171300- Nantucket Sound- 716 PM EST Tue Jan 16 2018 .TONIGHT...SE winds around 5 kt, becoming E after midnight. Seas 2 to 3 ft. Snow and rain after midnight with vsby 1 NM or less. .WED...E winds 10 to 15 kt with gusts up to 25 kt, becoming S 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Rain. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. .SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-171300- Vineyard Sound- 716 PM EST Tue Jan 16 2018 .TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Snow and rain after midnight with vsby 1 to 3 NM. .WED...E winds around 10 kt with gusts up to 20 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Rain. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN...W winds around 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 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. $$ ANZ234-171300- Buzzards Bay- 716 PM EST Tue Jan 16 2018 .TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Snow after midnight with vsby 1 to 3 NM. .WED...E winds 5 to 10 kt with gusts up to 20 kt, becoming N in the afternoon. Seas around 2 ft. Rain. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI...W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-171300- Rhode Island Sound- 716 PM EST Tue Jan 16 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM EST WEDNESDAY THROUGH WEDNESDAY EVENING... .TONIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Rain and snow after midnight with vsby 1 to 3 NM. .WED...E winds 10 to 15 kt with gusts up to 25 kt, becoming SW 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Rain. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of freezing spray. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of freezing spray. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN NIGHT...SW winds 5 to 10 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. $$ ANZ237-171300- Block Island Sound- 716 PM EST Tue Jan 16 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM EST WEDNESDAY THROUGH WEDNESDAY EVENING... .TONIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft. Rain after midnight. .WED...E winds 10 to 15 kt, becoming NW 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Rain. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of freezing spray. .THU...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-171300- Boston Harbor- 716 PM EST Tue Jan 16 2018 .TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. Snow after midnight. .WED...E winds 5 to 10 kt, becoming N in the afternoon. Waves around 2 ft. Rain and snow. Vsby 1 NM or less. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. A chance of snow. .THU...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 20 kt. Waves around 2 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .FRI...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. .SAT NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .SUN...W winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...SW winds around 5 kt. Waves 1 foot or less. 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. $$ ANZ236-171300- Narragansett Bay- 716 PM EST Tue Jan 16 2018 .TONIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. Snow likely with rain after midnight. .WED...E winds 5 to 10 kt with gusts up to 20 kt, becoming N in the afternoon. Waves 2 to 3 ft. Rain and snow. Vsby 1 NM or less. .WED NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .THU...W winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves around 2 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .SAT NIGHT...W winds 10 to 15 kt. Waves 2 to 3 ft. .SUN...W winds 5 to 10 kt. Waves around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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.