FZUS51 KBOX 152317 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 716 PM EDT Thu Apr 15 2021 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-161200- 716 PM EDT Thu Apr 15 2021 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pressure will track up the atlantic coast overnight and may strengthen into a gale center Friday as it tracks south of New England. High pressure builds in later in the weekend into early next week. For additional information on possible hazardous weather for the week ahead, please visit www.weather.gov/boston/erh/ghwo?sid=box. $$ ANZ250-161200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 716 PM EDT Thu Apr 15 2021 ...GALE WARNING IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt, increasing to 20 to 25 kt with gusts up to 35 kt after midnight. Seas 4 to 6 ft. A chance of rain this evening, then rain after midnight with vsby 1 NM or less. .FRI...E winds 25 to 35 kt with gusts up to 45 kt. Seas 8 to 11 ft. Rain. Vsby 1 NM or less. .FRI NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to 12 ft. Rain likely. .SAT...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 7 to 10 ft. A chance of rain. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 25 kt, becoming NW 5 to 10 kt after midnight. Seas 5 to 8 ft. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to 5 ft. .SUN NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 4 ft. .MON THROUGH TUE NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-161200- Massachusetts Bay and Ipswich Bay- 716 PM EDT Thu Apr 15 2021 ...GALE WARNING IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .TONIGHT...E winds 15 to 20 kt. Gusts up to 20 kt, increasing to 30 kt after midnight. Seas 3 to 5 ft. A chance of rain this evening, then rain after midnight with vsby 1 to 3 NM. .FRI...E winds 25 to 30 kt with gusts up to 40 kt. Seas 7 to 10 ft. Rain. Vsby 1 NM or less. .FRI NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to 10 ft. Rain likely. Vsby 1 to 3 NM. .SAT...N winds 20 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 5 to 8 ft. A chance of rain. .SAT NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas 4 to 6 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 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. $$ ANZ231-161200- Cape Cod Bay- 716 PM EDT Thu Apr 15 2021 ...GALE WARNING IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt, increasing to 20 to 25 kt with gusts up to 35 kt after midnight. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM after midnight. .FRI...E winds 25 to 30 kt with gusts up to 40 kt, becoming S 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 4 to 6 ft. Rain. Vsby 1 NM or less. .FRI NIGHT...E winds 10 to 15 kt, becoming N 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Rain likely. .SAT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Rain likely. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 3 to 5 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-161200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 716 PM EDT Thu Apr 15 2021 ...GALE WARNING IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .TONIGHT...E winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Gusts up to 40 kt. Seas 4 to 7 ft. A chance of rain this evening, then rain after midnight with vsby 1 NM or less. .FRI...SE winds 25 to 35 kt with gusts up to 45 kt, becoming S 20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 8 to 11 ft. A chance of rain. Vsby 1 NM or less. .FRI NIGHT...S winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. A chance of rain. .SAT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. Rain likely. .SAT NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 8 ft. .SUN...NW winds 5 to 10 kt. Seas 3 to 5 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 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. $$ ANZ255-161200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 716 PM EDT Thu Apr 15 2021 ...GALE WARNING IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .TONIGHT...E winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Gusts up to 40 kt. Seas 4 to 7 ft. Rain. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Rain likely. Vsby 1 NM or less. .FRI NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Rain likely. .SAT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 7 ft. A chance of rain. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 25 kt, becoming NW 5 to 10 kt after midnight. Seas 3 to 5 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-161200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 716 PM EDT Thu Apr 15 2021 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TONIGHT...E winds 20 to 25 kt, becoming NE after midnight. Gusts up to 35 kt. Seas 5 to 7 ft. Rain. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...W winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 8 ft. Rain likely. Vsby 1 NM or less. .FRI NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. A chance of rain. .SAT...NW winds 20 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. .SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 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. $$ ANZ232-161200- Nantucket Sound- 716 PM EDT Thu Apr 15 2021 ...GALE WARNING IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY AFTERNOON... .TONIGHT...E winds 20 to 25 kt with gusts up to 30 kt, increasing to 25 to 30 kt with gusts up to 40 kt after midnight. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .FRI...SE winds 20 to 25 kt, becoming SW 15 to 20 kt in the afternoon. Gusts up to 35 kt. Seas 3 to 5 ft. Rain likely. Vsby 1 NM or less. .FRI NIGHT...W winds 15 to 20 kt, becoming NW after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Rain likely. .SAT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain likely. .SAT NIGHT...N winds 10 to 15 kt with gusts up to 25 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-161200- Vineyard Sound- 716 PM EDT Thu Apr 15 2021 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TONIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt, becoming W in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. Rain likely. Vsby 1 NM or less. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. .SAT...NW winds 15 to 20 kt, becoming N 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain. .SAT NIGHT...N winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 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. $$ ANZ234-161200- Buzzards Bay- 716 PM EDT Thu Apr 15 2021 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TONIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 NM. .FRI...N winds 15 to 20 kt, becoming SW in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. Rain. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. .SAT...NW winds 15 to 20 kt, becoming N 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain. .SAT NIGHT...N winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-161200- Rhode Island Sound- 716 PM EDT Thu Apr 15 2021 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TONIGHT...E winds 15 to 20 kt, becoming NE after midnight. Gusts up to 30 kt. Seas 4 to 5 ft. Rain. Vsby 1 to 3 NM. .FRI...NW winds 20 to 25 kt, becoming W in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Rain likely. Vsby 1 NM or less. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. A chance of rain. .SAT...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...N winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 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. $$ ANZ237-161200- Block Island Sound- 716 PM EDT Thu Apr 15 2021 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TONIGHT...E winds 15 to 20 kt, becoming NE after midnight. Gusts up to 30 kt. Seas 4 to 5 ft. Rain. Vsby 1 to 3 NM. .FRI...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain likely. Vsby 1 NM or less. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Rain likely. .SAT...NW winds 15 to 20 kt, diminishing to 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. .SAT NIGHT THROUGH SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-161200- Boston Harbor- 716 PM EDT Thu Apr 15 2021 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY EVENING... .TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt after midnight. Waves 2 to 3 ft. Rain. Vsby 1 to 3 NM after midnight. .FRI...NE winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Waves 2 to 3 ft, except 5 to 8 ft at the outer harbor entrance. Rain. Vsby 1 NM or less. .FRI NIGHT...NE winds 20 to 25 kt, becoming N 15 to 20 kt after midnight. Waves 2 to 3 ft, except 4 to 7 ft at the outer harbor entrance. Rain likely. Vsby 1 to 3 NM. .SAT...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. A chance of rain. .SAT NIGHT...N winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .SUN AND SUN NIGHT...W winds around 5 kt. Waves 1 foot or less. .MON...SW winds around 5 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 1 foot or less. 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. $$ ANZ236-161200- Narragansett Bay- 716 PM EDT Thu Apr 15 2021 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH FRIDAY EVENING... .TONIGHT...E winds 10 to 15 kt, becoming NE 15 to 20 kt after midnight. Gusts up to 25 kt. Waves 2 to 3 ft. Rain. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 4 ft. Rain. Vsby 1 NM or less. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Rain likely. .SAT...NW winds 10 to 15 kt, becoming N 5 to 10 kt in the afternoon. Gusts up to 20 kt. Waves around 2 ft. .SAT NIGHT...N winds around 5 kt, becoming W after midnight. Waves 1 foot or less. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Waves 1 foot or less. .MON...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...SW winds 10 to 15 kt. Waves 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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