Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 211816 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 116 PM EST Thu Nov 21 2019 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-220700- 116 PM EST Thu Nov 21 2019 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure builds across the waters today. A cold front moves across the waters Friday with a period of gusty winds for the waters late Friday into Friday night. Another weather system passes to our south over the weekend, bringing another period of possible gales into Sunday. 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. $$ ANZ250-220700- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 PM EST Thu Nov 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING... ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 3 to 5 ft. .FRI...SW winds 15 to 20 kt, becoming W 25 to 30 kt in the afternoon. Gusts up to 40 kt. Seas 4 to 6 ft. A chance of showers. .FRI NIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 40 kt. Seas 5 to 8 ft. .SAT...W winds 15 to 20 kt. Gusts up to 35 kt, decreasing to 25 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of rain. .SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain likely. .SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-220700- Massachusetts Bay and Ipswich Bay- 116 PM EST Thu Nov 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING... ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 5 to 10 kt. Seas 3 to 5 ft. .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt, becoming W 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 2 to 4 ft. A chance of showers. .FRI NIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 40 kt. Seas 3 to 5 ft. .SAT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .MON NIGHT...W 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. $$ ANZ231-220700- Cape Cod Bay- 116 PM EST Thu Nov 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TONIGHT...SW winds around 5 kt, increasing to 5 to 10 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. A chance of showers. .FRI NIGHT...W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 40 kt. Seas 3 to 5 ft. .SAT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-220700- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 PM EST Thu Nov 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING... ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 8 ft. .TONIGHT...W winds 5 to 10 kt, becoming SW with gusts up to 25 kt after midnight. Seas 4 to 6 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt, increasing to 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 4 to 7 ft. A chance of showers. .FRI NIGHT...W winds 25 to 30 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 40 kt. Seas 6 to 9 ft. .SAT...NW winds 15 to 20 kt with gusts up to 35 kt, becoming W 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 5 to 8 ft. .SAT NIGHT...W winds 10 to 15 kt, becoming S 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of rain. .SUN...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain. .SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. .MON NIGHT...W winds 5 to 10 kt with gusts up to 20 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. $$ ANZ255-220700- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt, becoming W 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 5 to 8 ft. A chance of showers. .FRI NIGHT...W winds 25 to 30 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 40 kt. Seas 7 to 10 ft. .SAT...NW winds 15 to 20 kt with gusts up to 30 kt, becoming W 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 7 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming S with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Rain likely. .SUN...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain. .SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-220700- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 5 to 10 kt. Seas 2 to 4 ft. .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. .FRI...SW winds 20 to 25 kt. Gusts up to 30 kt, increasing to 40 kt in the afternoon. Seas 5 to 8 ft. A chance of showers. .FRI NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 40 kt. Seas 6 to 9 ft. .SAT...NW winds 15 to 20 kt with gusts up to 30 kt, becoming W 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...SW winds around 10 kt, becoming S with gusts up to 20 kt after midnight. Seas around 3 ft. Rain likely. .SUN...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Rain likely. .SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. .MON NIGHT...W winds around 10 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. $$ ANZ232-220700- Nantucket Sound- 116 PM EST Thu Nov 21 2019 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TONIGHT...W winds around 5 kt, becoming SW with gusts up to 20 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 15 to 20 kt. Gusts up to 30 kt, increasing to 40 kt in the afternoon. Seas 2 to 4 ft. A chance of showers. .FRI NIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt after midnight. Gusts up to 40 kt. Seas 3 to 5 ft. .SAT...W winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...W winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft. Rain likely. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-220700- Vineyard Sound- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 25 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt, becoming W 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 3 to 5 ft. A chance of showers. .FRI NIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt after midnight. Gusts up to 40 kt. Seas 3 to 5 ft. .SAT...W winds 10 to 15 kt. Gusts up to 30 kt in the morning. Seas 2 to 4 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming S with gusts up to 20 kt after midnight. Seas around 2 ft. Rain likely. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .MON AND MON NIGHT...W winds 5 to 10 kt. Gusts up to 20 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. $$ ANZ234-220700- Buzzards Bay- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SW winds around 5 kt, increasing to 5 to 10 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. .FRI...SW winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. A chance of showers. .FRI NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 35 kt. Seas 2 to 4 ft. .SAT...W winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft. Rain likely. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON AND MON NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-220700- Rhode Island Sound- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft. .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt, becoming W 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 4 to 6 ft. A chance of showers. .FRI NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 7 ft. .SAT...W winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming S with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain likely. .SUN...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Rain likely. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .MON 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. $$ ANZ237-220700- Block Island Sound- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...W winds around 5 kt. Seas around 2 ft. .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. .FRI...SW winds 15 to 20 kt with gusts up to 30 kt, becoming W 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 3 to 5 ft. A chance of showers. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 40 kt. Seas 4 to 6 ft. .SAT...W winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming S with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain likely. .SUN...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Rain likely. .SUN NIGHT AND MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-220700- Boston Harbor- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...W winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 25 kt after midnight. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .FRI...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Gusts up to 35 kt. Waves around 2 ft. A chance of showers. .FRI NIGHT...W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 35 kt. Waves around 2 ft. .SAT...W winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt in the afternoon. Waves around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of rain. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Rain likely. .SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .MON AND MON NIGHT...W winds 5 to 10 kt. Waves around 2 ft, then 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. $$ ANZ236-220700- Narragansett Bay- 116 PM EST Thu Nov 21 2019 ...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... .THIS AFTERNOON...W winds around 5 kt. Waves 1 foot or less. .TONIGHT...SW winds around 5 kt, increasing to 5 to 10 kt with gusts up to 25 kt after midnight. Waves 2 to 3 ft. .FRI...SW winds 15 to 20 kt with gusts up to 35 kt. Waves 2 to 3 ft. A chance of showers. .FRI NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 35 kt. Waves 2 to 3 ft. .SAT...W winds 5 to 10 kt. Gusts up to 25 kt in the morning. Waves 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Waves 2 to 3 ft. Rain likely. .SUN...NE winds 5 to 10 kt. Waves 2 to 3 ft. Rain likely. .SUN NIGHT...NW winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .MON AND MON NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston

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