Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 180747 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 347 AM EDT Fri May 18 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-182030- 347 AM EDT Fri May 18 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... Dry today as a high pressure briefly builds in from the NW. Stationary front S of Long Island will push N late tonight into Sat. Expecting heavy rainfall to limit vsbys on Sat. A passing cold front Sun afternoon could trigger a thunderstorm or two across the near shore waters. Dry weather returns on Mon. 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. $$ ANZ250-182030- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...NE winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Areas of fog early. Vsby 1 to 3 NM early. .TONIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. .SAT...E winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...SE winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Seas 3 to 5 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. .MON...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-182030- Massachusetts Bay and Ipswich Bay- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...NE winds 10 to 15 kt, increasing to 15 to 20 kt this morning, then diminishing to 10 to 15 kt this afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. .TONIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. .SAT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...SE winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. .MON...W winds around 5 kt. Seas around 2 ft. .MON NIGHT...NW winds around 5 kt. Seas 1 foot or less. A chance of showers. .TUE...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...S winds 5 to 10 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. $$ ANZ231-182030- Cape Cod Bay- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...N winds 10 to 15 kt, becoming NE 15 to 20 kt this morning, then diminishing to 10 to 15 kt this afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Areas of fog early. Vsby 1 NM or less early. .TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .SAT...E winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 15 to 20 kt. Seas 2 to 3 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...W winds 10 to 15 kt, becoming NW around 5 kt after midnight. Seas around 2 ft. A chance of showers. .MON...W winds around 5 kt. Seas 1 foot or less. .MON NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-182030- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TODAY...N winds 10 to 15 kt, becoming NE 15 to 20 kt. Gusts up to 30 kt. Seas 4 to 6 ft. Areas of dense fog early this morning with vsby 1 NM or less. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN...SW winds 20 to 25 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...W winds 15 to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 4 to 6 ft. A chance of showers. .MON...W winds around 5 kt. Seas 2 to 4 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 5 to 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. $$ ANZ255-182030- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TODAY...N winds 5 to 10 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Areas of dense fog early this morning. Patchy fog this afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM this afternoon. .TONIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 NM. .SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN...SW winds 20 to 25 kt. Seas 5 to 8 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...W winds 15 to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 5 to 8 ft. .MON...W winds 5 to 10 kt. Seas 3 to 5 ft. .MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas around 3 ft. A chance of showers. .TUE NIGHT...S winds around 10 kt. Seas around 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-182030- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING... .TODAY...N winds 5 to 10 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Areas of dense fog early this morning with vsby 1 NM or less. .TONIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of showers. .SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN...SW winds 20 to 25 kt. Seas 5 to 8 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...W winds 15 to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 5 to 8 ft. .MON...W winds 5 to 10 kt. Seas 3 to 5 ft. .MON NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas around 3 ft. A chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Seas around 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. $$ ANZ232-182030- Nantucket Sound- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...N winds 5 to 10 kt with gusts up to 20 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Areas of dense fog early this morning with vsby 1 NM or less. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN...SW winds 20 to 25 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...W winds 15 to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of showers. .MON...W winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-182030- Vineyard Sound- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...N winds 5 to 10 kt with gusts up to 20 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Areas of dense fog early. Areas of fog this morning. Vsby 1 NM or less early this morning. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Seas 2 to 4 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of showers. .MON...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .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. $$ ANZ234-182030- Buzzards Bay- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...N winds 5 to 10 kt with gusts up to 20 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Areas of fog early. Areas of fog this morning. Vsby 1 NM or less early this morning. .TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...W winds 10 to 15 kt, becoming NW around 5 kt after midnight. Seas 2 to 3 ft. A chance of showers. .MON...W winds around 5 kt. Seas around 2 ft. .MON NIGHT...W winds around 5 kt. Seas around 2 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-182030- Rhode Island Sound- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...N winds 5 to 10 kt with gusts up to 20 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Areas of fog early. Areas of fog this morning. Vsby 1 NM or less early this morning. .TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 4 to 7 ft. A chance of showers. .MON...W winds 5 to 10 kt. Seas 3 to 4 ft. .MON NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 5 to 10 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. $$ ANZ237-182030- Block Island Sound- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...N winds 5 to 10 kt with gusts up to 20 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Areas of dense fog early. Areas of fog this morning. Vsby 1 NM or less early this morning. .TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers. Vsby 1 NM or less. .SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Seas 3 to 5 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of showers. .MON...W winds around 5 kt. Seas 2 to 4 ft. .MON NIGHT...SE winds around 5 kt. Seas 2 to 4 ft. A chance of showers. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-182030- Boston Harbor- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .TODAY...NE winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt this afternoon. Waves 2 to 3 ft. .TONIGHT...E winds 5 to 10 kt. Waves around 2 ft. .SAT...E winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Showers likely. Vsby 1 NM or less. .SAT NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Waves around 2 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .MON...W winds around 5 kt. Waves 1 foot or less. .MON NIGHT...NW winds around 5 kt. Waves 1 foot or less. A chance of showers. .TUE...E winds around 5 kt. Waves 1 foot or less. A chance of showers. .TUE NIGHT...S winds around 5 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. $$ ANZ236-182030- Narragansett Bay- 347 AM EDT Fri May 18 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .TODAY...N winds 5 to 10 kt, becoming NE 10 to 15 kt. Gusts up to 30 kt. Waves 2 to 3 ft. Areas of fog early. Vsby 1 NM or less early. .TONIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Waves around 2 ft. .SAT...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves around 2 ft. Patchy fog. Showers. Vsby 1 NM or less. .SAT NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Waves 2 to 4 ft. Areas of fog. Showers likely. Vsby 1 NM or less. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. Areas of fog. A chance of showers. Vsby 1 NM or less. .SUN NIGHT...NW winds 5 to 10 kt. Waves 2 to 4 ft. A chance of showers. .MON...W winds around 5 kt. Waves 2 to 3 ft. .MON NIGHT...NW winds around 5 kt. Waves 2 to 3 ft. A chance of showers. .TUE...SE winds around 5 kt. Waves around 2 ft. A chance of showers. .TUE NIGHT...S winds around 5 kt. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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