Coastal Waters Forecast
Issued by NWS Boston, MA

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661 FZUS51 KBOX 171504 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 1004 AM EST Sat Nov 17 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-180415- 1004 AM EST Sat Nov 17 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure builds over the waters this afternoon and tonight, then moves off to the east Sunday afternoon. A cold front crosses the waters Sunday night and Monday morning. High pressure then rebuilds over the waters during midweek. 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. $$ ANZ250-180415- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. .TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around 4 ft. .SUN...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain after midnight. .MON...SW winds 5 to 10 kt, becoming NW in the afternoon. Seas around 2 ft. A chance of rain. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...N winds 5 to 10 kt. Seas around 3 ft. A chance of showers. A chance of snow showers after midnight with vsby 1 to 3 NM. .TUE...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. A chance of rain and snow showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas around 4 ft. .WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas around 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-180415- Massachusetts Bay and Ipswich Bay- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 25 kt. Seas around 4 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SUN...NW winds 5 to 10 kt with gusts up to 20 kt, becoming W in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. A chance of rain after midnight. .MON...SW winds 5 to 10 kt, becoming NW in the afternoon. Seas 1 foot or less. A chance of rain. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. A chance of snow showers. A chance of showers in the evening. Vsby 1 to 3 NM. .TUE...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. A chance of snow showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...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. Seas 2 to 3 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ231-180415- Cape Cod Bay- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas around 3 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .SUN...NW winds 5 to 10 kt, diminishing to around 5 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas 1 foot or less. A chance of rain after midnight. .MON...W winds 5 to 10 kt. Seas 1 foot or less. A chance of rain. .MON NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Vsby 1 to 3 NM after midnight. .TUE...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. A chance of showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-180415- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...W winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 5 to 6 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 4 ft. .SUN...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain after midnight. .MON...SW winds 5 to 10 kt. Seas around 3 ft. A chance of rain in the morning. .MON NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. A chance of showers after midnight. .TUE...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 3 ft. A chance of showers. .TUE NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 5 ft. .WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 5 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 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. $$ ANZ255-180415- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 6 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. .SUN...N winds 5 to 10 kt, becoming NW in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas around 3 ft. .MON NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. A chance of showers after midnight. .TUE...NW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas around 3 ft. A chance of showers in the morning. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around 4 ft. .WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 5 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas around 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-180415- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt. Seas 5 to 6 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. .SUN...N winds 5 to 10 kt, becoming NW in the afternoon. Seas 3 to 4 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds 5 to 10 kt. Seas around 3 ft. .MON NIGHT...NW winds 5 to 10 kt. Seas around 3 ft. A chance of showers after midnight. .TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers in the morning. .TUE NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. .WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 4 ft. .WED NIGHT...W winds 10 to 15 kt, becoming NW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas around 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. $$ ANZ232-180415- Nantucket Sound- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. .SUN...NW winds 5 to 10 kt, diminishing to around 5 kt in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas around 2 ft. A chance of rain after midnight. .MON...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain in the morning. .MON NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. A chance of showers after midnight. .TUE...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. A chance of showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-180415- Vineyard Sound- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .SUN...NW winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain after midnight. .MON...SW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. A chance of rain in the morning. .MON NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. A chance of showers after midnight. .TUE...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less. A chance of showers in the morning. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 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. $$ ANZ234-180415- Buzzards Bay- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. .SUN...NW winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of rain after midnight. .MON...SW winds 5 to 10 kt, becoming W in the afternoon. Seas 1 foot or less. A chance of rain in the morning. .MON NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. A chance of showers after midnight. .TUE...NW winds 5 to 10 kt. Seas 1 foot or less. A chance of rain and snow showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft in the morning, then 1 foot or less. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less, then around 2 ft after midnight. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-180415- Rhode Island Sound- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. .SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain after midnight. .MON...W winds 5 to 10 kt. Seas around 2 ft. A chance of rain in the morning. .MON NIGHT...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers after midnight. .TUE...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 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. $$ ANZ237-180415- Block Island Sound- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. .SUN...N winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain after midnight. .MON...W winds 5 to 10 kt. Seas around 2 ft. A chance of rain in the morning. .MON NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .TUE...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. A chance of showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-180415- Boston Harbor- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Gusts up to 25 kt. Waves around 2 ft. .SUN...W winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of rain. Vsby 1 to 3 NM. .MON...SW winds around 5 kt, becoming NW in the afternoon. Waves 1 foot or less. A chance of rain. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of snow showers. A chance of showers in the evening. Patchy fog in the evening. Vsby 1 to 3 NM. .TUE...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of snow showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves 1 foot or less. .WED...W winds around 10 kt. Waves around 2 ft in the morning, then 1 foot or less. .WED NIGHT...W winds 5 to 10 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. $$ ANZ236-180415- Narragansett Bay- 1004 AM EST Sat Nov 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 3 ft. .TONIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .SUN...N winds 5 to 10 kt, becoming W in the afternoon. Waves around 2 ft. .SUN NIGHT...SW winds around 5 kt. Waves around 2 ft in the evening, then 1 foot or less. A chance of rain after midnight. .MON...W winds 5 to 10 kt. Waves around 2 ft. Patchy fog in the morning. A chance of rain in the morning with vsby 1 to 3 NM. .MON NIGHT...N winds 5 to 10 kt. Waves 1 foot or less. Patchy fog after midnight. A chance of rain and snow showers after midnight. .TUE...NW winds 5 to 10 kt. Waves 1 foot or less. Patchy fog in the morning. A chance of rain and snow showers in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves 1 foot or less. .WED...W winds 5 to 10 kt. Waves 1 foot or less. .WED NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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