Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 231941 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 341 PM EDT Sun Sep 23 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-240815- 341 PM EDT Sun Sep 23 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A backdoor cold front will move south across the waters late tonight as a strong high pres builds across Maine and Nova Scotia Mon. The high then moves to the Canadian Maritimes Tue. A warm front will lift north of the waters Wed and be followed by a cold front moving across the waters early Thu. 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. $$ ANZ250-240815- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .TONIGHT...W winds around 5 kt, becoming N 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to 4 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .MON NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Rain. Vsby 1 NM or less. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI...E winds 5 to 10 kt. Seas 2 to 4 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-240815- Massachusetts Bay and Ipswich Bay- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .TONIGHT...SW winds around 5 kt, becoming N 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...NW winds 5 to 10 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. $$ ANZ231-240815- Cape Cod Bay- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH MONDAY AFTERNOON... .TONIGHT...NW winds around 5 kt, becoming N 10 to 15 kt after midnight. Seas 1 foot or less. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE...SE winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. Rain. Vsby 1 NM or less. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-240815- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... .TONIGHT...N winds around 5 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 7 ft. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Rain. Vsby 1 NM or less. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .FRI...E winds around 10 kt. Seas 3 to 5 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 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. $$ ANZ255-240815- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... .TONIGHT...NE winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .TUE...E winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .TUE NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 5 to 7 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .FRI...NW winds around 10 kt. Seas 3 to 5 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-240815- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... .TONIGHT...NE winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas around 2 ft. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of rain. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 6 to 8 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 5 to 8 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI...N winds 5 to 10 kt. Seas 3 to 4 ft. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 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. $$ ANZ232-240815- Nantucket Sound- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... .TONIGHT...NE winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas 1 foot or less. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-240815- Vineyard Sound- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... .TONIGHT...N winds around 5 kt, becoming NE after midnight. Seas 1 foot or less. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas around 2 ft. .MON NIGHT...E winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...S winds around 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED...S winds around 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI...E winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NW winds 5 to 10 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. $$ ANZ234-240815- Buzzards Bay- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... .TONIGHT...N winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas 1 foot or less. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas around 2 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE...SE winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-240815- Rhode Island Sound- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... .TONIGHT...N winds around 5 kt, becoming NE after midnight. Seas 1 foot or less. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 4 to 6 ft. A chance of showers. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI...NE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI NIGHT...NW winds 5 to 10 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. $$ ANZ237-240815- Block Island Sound- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... .TONIGHT...E winds around 5 kt, becoming NE after midnight. Seas around 2 ft. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of rain. .TUE...SE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .THU...NE winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft. .FRI...NE winds 5 to 10 kt. Seas 2 to 4 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-240815- Boston Harbor- 341 PM EDT Sun Sep 23 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY AFTERNOON... .TONIGHT...SW winds around 5 kt, becoming N 10 to 15 kt with gusts up to 25 kt after midnight. Waves 1 foot or less. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. .MON NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt with gusts up to 20 kt after midnight. Waves 2 to 3 ft. .TUE...E winds 5 to 10 kt with gusts up to 20 kt, becoming SE 10 to 15 kt with gusts up to 30 kt in the afternoon. Waves around 2 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...SE winds 10 to 15 kt with gusts up to 30 kt, becoming S 5 to 10 kt with gusts up to 20 kt after midnight. Waves around 2 ft. Patchy fog. Rain. Vsby 1 to 3 NM. .WED...S winds around 10 kt with gusts up to 25 kt. Waves around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...W winds 5 to 10 kt. Gusts up to 25 kt in the evening. Waves around 2 ft. A chance of showers. .THU...N winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT...NE winds around 5 kt. Waves 1 foot or less. .FRI...NE winds around 5 kt. Waves 1 foot or less. .FRI NIGHT...NW 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. $$ ANZ236-240815- Narragansett Bay- 341 PM EDT Sun Sep 23 2018 .TONIGHT...N winds around 5 kt. Waves 1 foot or less. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of rain. .TUE...SE winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 4 ft. Patchy fog. Rain. Vsby 1 NM or less. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Waves 2 to 4 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...W winds 5 to 10 kt. Gusts up to 25 kt in the evening. Waves 2 to 4 ft. A chance of showers. .THU...N winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .THU NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. .FRI...N winds 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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

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