Coastal Waters Forecast
Issued by NWS Boston, MA

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603 FZUS51 KBOX 210517 CWFBOX Coastal Waters Forecast National Weather Service Taunton MA 116 AM EDT Sat Oct 21 2017 COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO 25 NM ANZ200-211800- 116 AM EDT Sat Oct 21 2017 .Synopsis for Massachusetts and Rhode Island coastal waters... Strong high pressure over the Appalachians will move east across the southern New England coastal waters Saturday, then east of New England Sunday. A strong cold front approaches from the west late Tuesday. 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. $$ ANZ250-211800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...W winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft. .MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. Showers likely. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 10 to 15 kt. Seas 4 to 7 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-211800- Massachusetts Bay and Ipswich Bay- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. .SAT...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...SW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Showers likely. .WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ231-211800- Cape Cod Bay- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. .SAT...W winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .SUN...SW winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers likely. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-211800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...N winds around 5 kt, becoming SW with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...S winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. Showers likely. .WED...S winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft, except 10 to 15 ft S and E of Nantucket. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 to 10 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. 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. $$ ANZ255-211800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SAT...NE winds around 5 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of showers. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 14 ft. Showers likely. .WED...S winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 12 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 to 10 kt. Seas 7 to 10 ft. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-211800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt. Seas around 3 ft. .SAT...NE winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 3 ft. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of showers. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 14 ft. Showers likely. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 9 to 13 ft. Showers likely. .WED NIGHT...W winds 5 to 10 kt. Seas 7 to 10 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. $$ ANZ232-211800- Nantucket Sound- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. .SUN...SW winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft. Showers likely. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-211800- Vineyard Sound- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt. Seas 1 foot or less. .SAT...N winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .SUN...SW winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .TUE NIGHT...S winds around 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Showers likely. .WED...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Showers likely. .WED NIGHT...SW winds 5 to 10 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. $$ ANZ234-211800- Buzzards Bay- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt. Seas 1 foot or less. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. .SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .SUN...SW winds 5 to 10 kt. Seas 1 foot or less. .SUN NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-211800- Rhode Island Sound- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...N winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .WED...S winds 10 to 15 kt with gusts up to 25 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 to 10 kt. Seas 5 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. $$ ANZ237-211800- Block Island Sound- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...NE winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...SW winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. .TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. .WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. Showers likely. .WED NIGHT...W winds 5 to 10 kt. Seas 4 to 7 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-211800- Boston Harbor- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...NW winds around 5 kt. Waves 1 foot or less. .SAT...SW winds around 5 kt. Waves 1 foot or less. .SAT NIGHT...SW winds around 5 kt. Waves 1 foot or less. .SUN...S winds around 5 kt. Waves 1 foot or less. .SUN NIGHT...SW winds around 5 kt. Waves 1 foot or less. .MON...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 foot or less. .TUE...S winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Showers likely. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Showers likely. .WED...S winds 5 to 10 kt. Waves around 2 ft. Showers likely. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ236-211800- Narragansett Bay- 116 AM EDT Sat Oct 21 2017 .REST OF TONIGHT...N winds 5 to 10 kt. Waves around 2 ft. .SAT...NW winds around 5 kt, becoming SW in the afternoon. Waves around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .SUN...SW winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .SUN NIGHT...S winds around 5 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. .TUE...S winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft. Showers likely. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Waves 3 to 5 ft. Showers likely. .WED...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft, except 4 to 7 ft at the bay entrance. Showers likely. .WED NIGHT...SW winds 5 to 10 kt. Waves 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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