Coastal Waters Forecast
Issued by NWS Boston, MA

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476 FZUS51 KBOX 152018 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 418 PM EDT Wed Aug 15 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-160930- 418 PM EDT Wed Aug 15 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front that moved across the waters earlier today will stall and wash out. Meanwhile, another cold front will approach from the N-NW tonight and Thu, only to return N as a warm front on Fri. An area of low pres will head east across northern New England on Sat dragging its attendant cold front across the waters. High pres will follow, building over northern New England and Nova Scotia on Sun and 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. $$ ANZ250-160930- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 418 PM EDT Wed Aug 15 2018 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .THU...W winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas around 2 ft. .FRI...SE winds 5 to 10 kt, becoming S 15 to 20 kt in the afternoon. Seas 2 to 3 ft. A chance of showers and tstms. Some tstms may produce heavy rainfall. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT...SW winds 15 to 20 kt, becoming NW 20 to 25 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT NIGHT...N winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .MON...NE winds around 10 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-160930- Massachusetts Bay and Ipswich Bay- 418 PM EDT Wed Aug 15 2018 .TONIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. .THU...W winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. .THU NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas 1 foot or less. .FRI...SE 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 and tstms. Some tstms may produce heavy rainfall. .FRI NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT...SW winds 15 to 20 kt, becoming NW in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT NIGHT...N winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Seas 2 to 4 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. .MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. 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. $$ ANZ231-160930- Cape Cod Bay- 418 PM EDT Wed Aug 15 2018 .TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. .THU...W winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. .THU NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .FRI...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT NIGHT...N winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-160930- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 418 PM EDT Wed Aug 15 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 3 TO 5 ft, subsiding to 2 to 4 ft. .THU...W winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. .FRI...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...S winds 15 to 20 kt, becoming SW 20 to 25 kt after midnight. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SUN...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 5 to 10 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. 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. $$ ANZ255-160930- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 418 PM EDT Wed Aug 15 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .THU...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 20 to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SUN...NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-160930- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 418 PM EDT Wed Aug 15 2018 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .THU...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. .THU NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 3 ft. .FRI NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...W winds 20 to 25 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. 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. $$ ANZ232-160930- Nantucket Sound- 418 PM EDT Wed Aug 15 2018 .TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. .THU...W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...S winds 20 to 25 kt, becoming SW 15 to 20 kt after midnight. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-160930- Vineyard Sound- 418 PM EDT Wed Aug 15 2018 .TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. .THU...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 20 to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN...NE winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. 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. $$ ANZ234-160930- Buzzards Bay- 418 PM EDT Wed Aug 15 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft, subsiding to around 2 ft. .THU...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. .FRI...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. Showers likely with a chance of tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .MON...NE winds around 10 kt. Seas around 2 ft. .MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-160930- Rhode Island Sound- 418 PM EDT Wed Aug 15 2018 .TONIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 4 ft. .THU...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 3 ft. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. Vsby 1 to 3 NM. .SAT NIGHT...NW winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. 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. $$ ANZ237-160930- Block Island Sound- 418 PM EDT Wed Aug 15 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. .THU...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. .FRI...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 3 to 5 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT NIGHT...NW winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. .SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-160930- Boston Harbor- 418 PM EDT Wed Aug 15 2018 .TONIGHT...S winds around 5 kt, becoming W after midnight. Waves 1 foot or less. .THU...W winds 5 to 10 kt, becoming SW in the afternoon. Waves 1 foot or less. .THU NIGHT...S winds 5 to 10 kt, becoming E after midnight. Waves 1 foot or less. .FRI...SE winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Waves 1 foot or less. A chance of showers and tstms. Some tstms may produce heavy rainfall. .FRI NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT...W winds 15 to 20 kt. Waves around 2 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt after midnight. Waves 2 to 3 ft. A chance of showers. .SUN...NE winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. .SUN NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .MON...NE winds around 5 kt. Waves 1 foot or less. .MON NIGHT...E winds around 5 kt. Waves 1 foot or less. Winds and waves higher in and near tstms. 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. $$ ANZ236-160930- Narragansett Bay- 418 PM EDT Wed Aug 15 2018 .TONIGHT...W winds 5 to 10 kt. Waves 1 to 2 ft. .THU...W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. .FRI...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Waves around 2 ft. .FRI NIGHT...SW winds 15 to 20 kt. Waves 2 to 4 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT...W winds 15 to 20 kt. Waves 2 to 3 ft. Patchy fog. A chance of showers and tstms. Some tstms may produce heavy rainfall. .SAT NIGHT...NW winds 15 to 20 kt, becoming NE 5 to 10 kt after midnight. Waves 2 to 3 ft. A chance of showers. .SUN...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SUN NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. .MON...NE winds 5 to 10 kt. Waves around 2 ft. .MON NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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