Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 201454 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 954 AM EST Tue Nov 20 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-210315- 954 AM EST Tue Nov 20 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A Low pressure system tracks up along coastal New England today. Rain chances continue through the evening. Arctic high pressure then builds across the region for Wednesday through Saturday. 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. $$ ANZ250-210315- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING... .THIS AFTERNOON...NE winds 15 to 20 kt, increasing to 20 to 25 kt. Seas 5 to 6 ft. Rain. Vsby 1 NM or less. .TONIGHT...NW winds 20 to 25 kt, becoming W 15 to 20 kt after midnight. Seas 5 to 8 ft. A chance of rain. Vsby 1 to 3 NM. .WED...W winds 15 to 20 kt. Gusts up to 25 kt, increasing to 35 kt in the afternoon. Seas 4 to 6 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 7 ft. .THU...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 6 to 8 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU NIGHT...NW winds 20 to 25 kt. Gusts up to 40 kt, decreasing to 30 kt after midnight. Seas 4 to 7 ft. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-210315- Massachusetts Bay and Ipswich Bay- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY EVENING... .THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Rain. Vsby 1 NM or less. .TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .THU...NW winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...SW winds 5 to 10 kt with gusts up to 25 kt. Seas around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Rain likely. 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. $$ ANZ231-210315- Cape Cod Bay- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY EVENING... .THIS AFTERNOON...E winds 5 to 10 kt, becoming N 15 to 20 kt. Gusts to 25 kt. Seas 2 to 3 ft. Rain. Vsby 1 NM or less. .TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED NIGHT...W winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 4 to 6 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 7 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt, diminishing to 15 to 20 kt with gusts up to 30 kt after midnight. Seas 4 to 6 ft. A chance of snow showers. Vsby 1 to 3 NM. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-210315- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING... .THIS AFTERNOON...SE winds 5 to 10 kt, becoming SW 15 to 20 kt with gusts up to 25 kt. Seas around 4 ft. A chance of rain early, then rain likely. Vsby 1 NM or less, increasing to 1 to 3 NM. .TONIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. A chance of rain. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. A chance of showers. .THU...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 7 to 10 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU NIGHT...NW winds 20 to 25 kt. Gusts up to 40 kt, decreasing to 30 kt after midnight. Seas 6 to 9 ft. A chance of snow showers. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 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 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. 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. $$ ANZ255-210315- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING... .THIS AFTERNOON...S winds around 10 kt with gusts up to 20 kt, becoming W 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. A chance of rain. Vsby 1 NM or less, increasing to 1 to 3 NM. .TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. A chance of showers. .THU...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 5 to 8 ft. .THU NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt, diminishing to 15 to 20 kt with gusts up to 30 kt after midnight. Seas 4 to 6 ft. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-210315- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING... .THIS AFTERNOON...SW winds 10 to 15 kt, becoming W 15 to 20 kt. Gusts up to 25 kt. Seas around 3 ft, building to 5 ft. Rain likely. .TONIGHT...NW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. .WED...W winds 15 to 20 kt with gusts up to 25 kt, increasing to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 4 to 7 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. A chance of showers. .THU...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 7 ft. .THU NIGHT...NW winds 20 to 25 kt, becoming N 15 to 20 kt after midnight. Gusts up to 35 kt. Seas 3 to 5 ft. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...SW winds around 10 kt with gusts up to 20 kt. Seas around 3 ft. .SAT NIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. 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. $$ ANZ232-210315- Nantucket Sound- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY EVENING... .THIS AFTERNOON...SE winds 5 to 10 kt, becoming W 15 to 20 kt. Gusts up to 25 kt late. Seas 1 foot or less, then around 2 ft. Rain likely. Vsby 1 to 3 NM. .TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 3 ft. .WED NIGHT...W winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 3 to 5 ft. A chance of showers. .THU...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 35 kt. Seas 2 to 4 ft. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-210315- Vineyard Sound- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY EVENING... .THIS AFTERNOON...S winds 5 to 10 kt, becoming W 10 to 15 kt. Gusts up to 25 kt late. Seas 1 foot or less, then around 2 ft. Rain likely. Vsby 1 to 3 NM. .TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. .WED NIGHT...NW winds around 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around 3 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...SW winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. 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. $$ ANZ234-210315- Buzzards Bay- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY EVENING... .THIS AFTERNOON...NE winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 25 kt. Seas 1 foot or less, then around 2 ft. Rain. Vsby 1 to 3 NM. .TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU...NW winds 15 to 20 kt with gusts up to 35 kt. Seas around 3 ft. .THU NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-210315- Rhode Island Sound- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING... .THIS AFTERNOON...NE winds 5 to 10 kt, becoming NW 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Rain early, then a chance of rain. Vsby 1 to 3 NM. .TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. .THU...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. 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. $$ ANZ237-210315- Block Island Sound- 954 AM EST Tue Nov 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING... .THIS AFTERNOON...NW winds 10 to 15 kt. Gusts up to 25 kt late. Seas around 3 ft. Rain early, then a chance of rain. Vsby 1 to 3 NM early. .TONIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED...W winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to 6 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU...NW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. .THU NIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-210315- Boston Harbor- 954 AM EST Tue Nov 20 2018 ...GALE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON... .THIS AFTERNOON...NE winds 10 to 15 kt, becoming N 15 to 20 kt. Gusts up to 25 kt. Waves 3 to 4 ft. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM. .TONIGHT...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. .WED...W winds 10 to 15 kt. Gusts up to 20 kt, increasing to 30 kt in the afternoon. Waves around 2 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 35 kt. Waves around 2 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU...NW winds 15 to 20 kt with gusts up to 35 kt. Waves around 2 ft. .THU NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves around 2 ft. .FRI...W winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. .FRI NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. Rain likely. 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. $$ ANZ236-210315- Narragansett Bay- 954 AM EST Tue Nov 20 2018 ...GALE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON... .THIS AFTERNOON...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Rain early, then a chance of rain. Vsby 1 to 3 NM. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .WED...W winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt with gusts up to 30 kt in the afternoon. Waves 2 to 3 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 3 ft. A chance of snow showers. Vsby 1 to 3 NM. .THU...NW winds 15 to 20 kt with gusts up to 30 kt. Waves around 3 ft. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 3 ft. .FRI...NW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. .FRI NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .SAT...SW winds 5 to 10 kt. Waves around 2 ft. .SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

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