Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 172316 CWFBOX Coastal Waters Forecast National Weather Service Boston/Norton MA 716 PM EDT Tue Jul 17 2018 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-181200- 716 PM EDT Tue Jul 17 2018 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will push across the waters overnight. High pres will follow for Thu and Fri. High pres will move east of the waters on Sat. 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. $$ ANZ250-181200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EDT Tue Jul 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas 3 to 5 ft. Patchy fog. Showers with a slight chance of tstms, mainly this evening. Some tstms may produce heavy rainfall this evening. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. .WED NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 4 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .SAT...S winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...SE winds around 10 kt. Seas 2 to 4 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-181200- Massachusetts Bay and Ipswich Bay- 716 PM EDT Tue Jul 17 2018 .TONIGHT...SW winds around 5 kt. Seas 2 to 4 ft. Showers with a slight chance of tstms, mainly this evening. Patchy fog this evening. Some tstms may produce heavy rainfall this evening with vsby 1 NM or less. .WED...NW winds 5 to 10 kt, becoming NE in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. .WED NIGHT...N winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas around 2 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...S winds around 5 kt, becoming SW around 5 kt after midnight. Seas around 2 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. 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. $$ ANZ231-181200- Cape Cod Bay- 716 PM EDT Tue Jul 17 2018 .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Patchy fog. Showers with a chance of tstms this evening, then a chance of showers with a slight chance of tstms after midnight. Vsby 1 to 3 NM this evening. .WED...N winds 5 to 10 kt with gusts up to 20 kt. Seas 1 to 2 ft. A chance of showers. .WED NIGHT...N winds 5 to 10 kt. Seas around 2 ft. .THU...NE winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT...SE winds around 5 kt, becoming SW around 5 kt after midnight. Seas around 2 ft. .FRI...SW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SUN...SE winds 5 to 10 kt. Seas around 2 ft. .SUN NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-181200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EDT Tue Jul 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING... .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. A slight chance of tstms. Showers likely this evening, then a chance of showers after midnight. Vsby 1 NM or less. .WED...W winds 5 to 10 kt, becoming N 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. .THU...N winds 5 to 10 kt. Seas 3 to 5 ft. .THU NIGHT...E winds around 5 kt, becoming W after midnight. Seas 2 to 4 ft. .FRI...W winds around 5 kt, becoming S around 5 kt in the afternoon. Seas 2 to 4 ft. .FRI NIGHT...S winds around 5 kt. Seas 2 to 3 ft. .SAT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers and tstms. 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. $$ ANZ255-181200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EDT Tue Jul 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING... .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. A chance of showers with a slight chance of tstms. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .WED...W winds 5 to 10 kt, becoming N 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. .THU...NE winds 5 to 10 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds around 5 kt, becoming SW after midnight. Seas 2 to 4 ft. .FRI...W winds around 5 kt, becoming S around 5 kt in the afternoon. Seas 2 to 4 ft. .FRI NIGHT...S winds around 5 kt. Seas 2 to 3 ft. .SAT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds around 10 kt. Seas 2 to 4 ft. .SUN...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-181200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EDT Tue Jul 17 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 5 ft. Patchy fog. Showers likely with a slight chance of tstms. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...N winds 5 to 10 kt. Seas around 4 ft. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...NE winds around 5 kt, becoming N after midnight. Seas 3 to 5 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 3 to 4 ft. .THU NIGHT...S winds around 5 kt. Seas 3 to 4 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas around 3 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 3 ft. .SAT...SE winds 5 to 10 kt. Seas 2 to 4 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .SUN NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers and tstms. 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. $$ ANZ232-181200- Nantucket Sound- 716 PM EDT Tue Jul 17 2018 .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas around 2 ft. Patchy fog. Showers likely with a slight chance of tstms. Vsby 1 to 3 NM. .WED...NW winds 5 to 10 kt, becoming N in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .WED NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...SE winds around 5 kt, becoming SW after midnight. Seas around 2 ft. .FRI...W winds around 5 kt, becoming S around 5 kt in the afternoon. Seas around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...SE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-181200- Vineyard Sound- 716 PM EDT Tue Jul 17 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Patchy fog. Showers. A chance of tstms this evening, then a slight chance of tstms after midnight. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...N winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .WED NIGHT...N winds 5 to 10 kt. Seas around 2 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. .THU NIGHT...S winds around 5 kt, becoming SW after midnight. Seas around 2 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...SE winds around 10 kt. Seas around 2 ft. .SUN...SE winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms. 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. $$ ANZ234-181200- Buzzards Bay- 716 PM EDT Tue Jul 17 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog. Showers. A chance of tstms this evening, then a slight chance of tstms after midnight. Vsby 1 NM or less this evening. .WED...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. .THU NIGHT...S winds around 5 kt, becoming SW around 5 kt after midnight. Seas around 2 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. .SUN...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-181200- Rhode Island Sound- 716 PM EDT Tue Jul 17 2018 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. Showers. A chance of tstms this evening, then a slight chance of tstms after midnight. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 4 ft. .WED NIGHT...E winds around 5 kt, becoming N after midnight. Seas 2 to 4 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .SAT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers and tstms. 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. $$ ANZ237-181200- Block Island Sound- 716 PM EDT Tue Jul 17 2018 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Showers with a chance of tstms this evening, then a chance of showers with a slight chance of tstms after midnight. Vsby 1 NM or less this evening. .WED...N winds 5 to 10 kt. Seas 2 to 4 ft. .WED NIGHT...SW winds around 5 kt, becoming N after midnight. Seas 2 to 4 ft. .THU...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 4 ft. .THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. .FRI NIGHT...S winds around 5 kt. Seas around 2 ft. .SAT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. .SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-181200- Boston Harbor- 716 PM EDT Tue Jul 17 2018 .TONIGHT...S winds around 5 kt, becoming W after midnight. Waves around 2 ft. Showers with a slight chance of tstms, mainly this evening. Patchy fog this evening. Some tstms may produce heavy rainfall this evening with vsby 1 NM or less. .WED...NW winds 5 to 10 kt, becoming NE in the afternoon. Waves 1 foot or less. .WED NIGHT...N winds around 5 kt. Waves 1 foot or less. .THU...N winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less. .THU NIGHT...SE winds around 5 kt, becoming SW around 5 kt after midnight. Waves 1 foot or less. .FRI...W winds around 5 kt, becoming SE around 5 kt in the afternoon. Waves 1 foot or less. .FRI NIGHT...S winds around 5 kt. Waves 1 foot or less. .SAT...SE winds 5 to 10 kt. Waves 1 foot or less. .SAT NIGHT...SE winds around 5 kt. Waves 1 foot or less. .SUN...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SUN NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers and tstms. 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. $$ ANZ236-181200- Narragansett Bay- 716 PM EDT Tue Jul 17 2018 .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming W after midnight. Waves 2 to 3 ft. Patchy fog. Showers. A chance of tstms this evening, then a slight chance of tstms after midnight. Some tstms may produce heavy rainfall this evening with vsby 1 NM or less. .WED...N winds 5 to 10 kt. Waves 2 to 3 ft. .WED NIGHT...N winds around 5 kt. Waves 2 to 3 ft. .THU...N winds around 5 kt, becoming SE in the afternoon. Waves around 2 ft. .THU NIGHT...SW winds around 5 kt. Waves around 2 ft. .FRI...W winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .FRI NIGHT...S winds around 5 kt. Waves around 2 ft. .SAT...SE winds 5 to 10 kt. Waves around 2 ft. .SAT NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. .SUN...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SUN NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers and tstms. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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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