Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 091217 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 716 AM EST Sat Dec 9 2017 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-100100- 716 AM EST Sat Dec 9 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pressure off the Carolina coast will head northeast and pass the benchmark this evening. This low will head toward Nova Scotia late tonight and in its wake, strong westerly winds nearing 30 kts will occur into Sunday evening. High pressure will follow briefly on Monday. Low pressure will approach from the west Monday night, moving offshore and becoming a potential gale 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. $$ ANZ250-100100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...NW winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Rain. Vsby 1 to 3 NM this morning. .TONIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Rain. .SUN...W winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 8 ft. A chance of showers. .SUN NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 8 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 3 to 5 ft. Rain. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain likely. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED...W winds 20 to 25 kt with gusts up to 40 kt. Seas 5 to 8 ft. .WED NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 8 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-100100- Massachusetts Bay and Ipswich Bay- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...NW winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. A chance of rain this morning, then rain and snow this afternoon. Vsby 1 to 3 NM, decreasing to 1 NM or less this afternoon. .TONIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain with a chance of snow. Vsby 1 NM or less. .SUN...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of snow showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming SE with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain. .TUE...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain likely. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED...W winds 15 to 20 kt with gusts up to 40 kt. Seas 3 to 5 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 35 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. $$ ANZ231-100100- Cape Cod Bay- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...N winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 3 ft. Rain. .TONIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Rain. .SUN...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming SE with gusts up to 20 kt after midnight. Seas around 2 ft. Rain likely. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .WED...W winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 5 ft. .WED NIGHT...W winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-100100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...N winds 10 to 15 kt, becoming NE 15 to 20 kt this afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Rain. .TONIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. Rain. .SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of showers. .SUN NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 8 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt after midnight. Seas 3 to 5 ft. A chance of rain. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain likely. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of showers. .WED...W winds 20 to 25 kt with gusts up to 40 kt. Seas 5 to 8 ft, except 9 to 12 ft S and E of Nantucket. .WED NIGHT...W winds 20 to 25 kt with gusts up to 40 kt. Seas 6 to 9 ft, except 9 to 14 ft S and E of Nantucket. 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. $$ ANZ255-100100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...NE winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Rain. .TONIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. Rain. .SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 10 ft. A chance of showers. .SUN NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 6 to 9 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt after midnight. Seas 4 to 6 ft. A chance of rain. .TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of rain. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. A chance of showers. .WED...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 8 to 11 ft. A chance of snow showers. Vsby 1 to 3 NM. .WED NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 8 to 11 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-100100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...NE winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt this afternoon. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM this morning. .TONIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 5 to 8 ft. Rain. .SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 10 ft. A chance of showers. .SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming S 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of rain. .TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of rain. .TUE NIGHT...W winds around 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. A chance of showers. .WED...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 8 to 11 ft. A chance of snow showers. Vsby 1 to 3 NM. .WED NIGHT...NW winds 25 to 30 kt with gusts up to 40 kt. Seas 7 to 10 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. $$ ANZ232-100100- Nantucket Sound- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 15 to 20 kt with gusts up to 30 kt this afternoon. Seas 2 to 3 ft. Rain. .TONIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Rain. .SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming S with gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of rain. .TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Rain likely. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. A chance of showers. .WED...W winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 5 ft. .WED NIGHT...W winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-100100- Vineyard Sound- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...NE winds 10 to 15 kt. Gusts up to 20 kt, increasing to 30 kt this afternoon. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM this morning. .TONIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Rain. .SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SUN NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain likely. .TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Rain likely. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. .WED...W winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 6 ft. .WED NIGHT...W winds 20 to 25 kt with gusts up to 40 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. $$ ANZ234-100100- Buzzards Bay- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...N winds 5 to 10 kt, becoming NE 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Rain. Snow this morning with vsby 1 to 3 NM. .TONIGHT...N winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. Rain with a chance of snow. .SUN...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of snow showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .MON NIGHT...SW winds 5 to 10 kt, becoming S with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain likely. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .WED...W winds 15 to 20 kt with gusts up to 40 kt. Seas 2 to 4 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 40 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-100100- Rhode Island Sound- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...NE winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt this afternoon. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM this morning. .TONIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. Rain. .SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 8 ft. .SUN NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 8 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .MON NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain. .TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of rain. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of showers. .WED...W winds 20 to 25 kt with gusts up to 40 kt. Seas 5 to 8 ft. .WED NIGHT...W winds 20 to 25 kt with gusts up to 40 kt. Seas 5 to 8 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. $$ ANZ237-100100- Block Island Sound- 716 AM EST Sat Dec 9 2017 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EST THIS AFTERNOON THROUGH MONDAY MORNING... .TODAY...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain. Snow this afternoon. Vsby 1 to 3 NM. .TONIGHT...N winds 15 to 20 kt with gusts up to 30 kt, becoming NW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 4 to 6 ft. Rain with a chance of snow. Vsby 1 to 3 NM. .SUN...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. .MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .MON NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 3 to 5 ft. Rain likely. .TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain likely. .TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED...NW winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 7 ft. .WED NIGHT...W winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-100100- Boston Harbor- 716 AM EST Sat Dec 9 2017 .TODAY...NW winds around 5 kt, becoming N 10 to 15 kt with gusts up to 20 kt this afternoon. Waves around 2 ft. A chance of snow with a slight chance of rain this morning, then snow this afternoon. Vsby 1 to 3 NM, decreasing to 1 NM or less this afternoon. .TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Snow likely with rain. Vsby 1 NM or less. .SUN...W winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. A chance of snow showers. .SUN NIGHT...W winds 5 to 10 kt with gusts up to 25 kt. Waves around 2 ft. .MON...W winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .MON NIGHT...SW winds around 5 kt, becoming SE after midnight. Waves 1 foot or less. Rain. .TUE...S winds around 5 kt. Waves around 2 ft. Rain likely. .TUE NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .WED...W winds 10 to 15 kt with gusts up to 35 kt. Waves around 2 ft. .WED NIGHT...W winds 10 to 15 kt with gusts up to 30 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. $$ ANZ236-100100- Narragansett Bay- 716 AM EST Sat Dec 9 2017 .TODAY...N winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Waves around 2 ft. Rain and snow. Vsby 1 to 3 NM. .TONIGHT...N winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Waves 2 to 3 ft. Rain with a chance of snow. Vsby 1 NM or less. .SUN...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft, except 4 to 7 ft at the bay entrance. A chance of snow showers. .SUN NIGHT...W winds 5 to 10 kt with gusts up to 25 kt. Waves 2 to 4 ft. .MON...W winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. .MON NIGHT...SW winds around 5 kt, becoming SE after midnight. Waves 2 to 4 ft. Rain. .TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. Rain likely. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. .WED...W winds 15 to 20 kt with gusts up to 35 kt. Waves 2 to 3 ft. .WED NIGHT...W winds 15 to 20 kt with gusts up to 35 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston

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