Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 200207 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 1007 PM EDT Thu Apr 19 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-201515- 1007 PM EDT Thu Apr 19 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pressure will move over the Canadian Maritimes overnight tonight. Winds will be gusty out of the northwest for Friday morning. High pressure brings dry weather over the waters this weekend lasting into Monday. Low pressure will begin to move north along the coast on Tuesday into Wednesday. 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. $$ ANZ250-201515- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .MON...NW winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 10 to 15 kt. Seas 2 to 3 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-201515- Massachusetts Bay and Ipswich Bay- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers this evening. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .MON...NE winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. 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. $$ ANZ231-201515- Cape Cod Bay- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SUN...N winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .MON...NE winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-201515- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .OVERNIGHT...W winds 5 to 10 kt, becoming NW 15 to 20 kt. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .MON...N winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. 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. $$ ANZ255-201515- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .OVERNIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. .FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. .SAT NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. .SUN...W winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .MON...N winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-201515- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .OVERNIGHT...NW winds 15 to 20 kt, increasing to 20 to 25 kt. Gusts up to 30 kt. Seas 5 to 8 ft. A chance of showers this evening. .FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds around 10 kt, becoming N after midnight. Seas around 2 ft. .MON...S winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...SE winds 10 to 15 kt. Seas 2 to 3 ft. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers. 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. $$ ANZ232-201515- Nantucket Sound- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas around 2 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-201515- Vineyard Sound- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. 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. $$ ANZ234-201515- Buzzards Bay- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas around 2 ft. .SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. .SUN...W winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .TUE...S winds 5 to 10 kt. Seas 1 foot or less. .TUE NIGHT...SE winds around 10 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-201515- Rhode Island Sound- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers this evening. .FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .SAT NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. .MON...W winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...S winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. 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. $$ ANZ237-201515- Block Island Sound- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers this evening. .FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. .SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SUN...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .SUN NIGHT...W winds around 10 kt, becoming N after midnight. Seas around 2 ft. .MON...SE winds 5 to 10 kt. Seas 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-201515- Boston Harbor- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .OVERNIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Waves around 2 ft. A chance of showers. .FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves around 2 ft. .FRI NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Waves around 2 ft. .SAT...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves 1 foot or less. .SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .SUN...NW winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...NW winds around 5 kt. Waves 1 foot or less. .MON...NE winds around 5 kt. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .TUE...S winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. 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. $$ ANZ236-201515- Narragansett Bay- 1007 PM EDT Thu Apr 19 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM EDT FRIDAY THROUGH FRIDAY MORNING... .OVERNIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers this evening. .FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .SAT...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves around 2 ft. .SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .SUN...W winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves 1 foot or less. .MON...W winds around 5 kt. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .TUE...S winds 5 to 10 kt. Waves around 2 ft. .TUE NIGHT...SE winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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