Coastal Waters Forecast
Issued by NWS Boston, MA

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000 FZUS51 KBOX 300517 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 116 AM EDT Mon Mar 30 2020 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-301800- 116 AM EDT Mon Mar 30 2020 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front will slide through late today into Mon. Low pres develops on this front E of the waters and will slowly move E through Tue. Another low pres should pass well S of the waters Wed. low pressure will remain nearly stationary well east of the waters for Thursday. 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. $$ ANZ250-301800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of showers. Vsby 1 to 3 NM. .MON...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 6 to 9 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 8 to 11 ft. .TUE NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 6 to 9 ft. .WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .THU...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of showers. .FRI...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 7 to 10 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-301800- Massachusetts Bay and Ipswich Bay- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .MON...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 6 to 9 ft. .TUE NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. .WED AND WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .THU THROUGH FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 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. $$ ANZ231-301800- Cape Cod Bay- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT EARLY THIS MORNING... .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .MON NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. A chance of showers. .TUE NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .WED AND WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .THU NIGHT AND FRI...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-301800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. Patchy fog. A chance of showers. Vsby 1 NM or less. .MON...NE winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 5 to 7 ft. Patchy fog. Vsby 1 NM or less. .MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to 10 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...N winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 6 to 9 ft. .WED...N winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. .THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of showers. .FRI...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. A chance of showers. .FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 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. $$ ANZ255-301800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. Patchy dense fog. A slight chance of showers. Vsby 1 NM or less. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less. .MON NIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 5 to 8 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. .THU...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU NIGHT AND FRI...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers. .FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-301800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .MON NIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt with gusts up to 30 kt after midnight. Seas 4 to 6 ft. Patchy fog. .TUE...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. .THU THROUGH FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 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. $$ ANZ232-301800- Nantucket Sound- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT EARLY THIS MORNING... .REST OF TONIGHT...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less. .MON NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. .THU NIGHT AND FRI...N winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-301800- Vineyard Sound- 116 AM EDT Mon Mar 30 2020 .REST OF TONIGHT...N winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...N winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .THU NIGHT AND FRI...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 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. $$ ANZ234-301800- Buzzards Bay- 116 AM EDT Mon Mar 30 2020 .REST OF TONIGHT...N winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .TUE...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .THU NIGHT AND FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-301800- Rhode Island Sound- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Patchy fog. A chance of showers. .TUE...N winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 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. $$ ANZ237-301800- Block Island Sound- 116 AM EDT Mon Mar 30 2020 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .REST OF TONIGHT...N winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. Vsby 1 NM or less. .MON...N winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers. .TUE...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-301800- Boston Harbor- 116 AM EDT Mon Mar 30 2020 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. Patchy fog. Showers likely. Vsby 1 to 3 NM. .TUE...N winds 15 to 20 kt with gusts up to 30 kt, becoming NE 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft, except 4 to 7 ft at the outer harbor entrance. A chance of showers. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .THU THROUGH FRI...N winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. .FRI NIGHT...NE winds around 10 kt. Waves 2 to 3 ft, except 4 to 7 ft at the outer harbor entrance. 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. $$ ANZ236-301800- Narragansett Bay- 116 AM EDT Mon Mar 30 2020 .REST OF TONIGHT...N winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .MON...N winds around 10 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...N winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .TUE NIGHT THROUGH WED NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston

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