FZUS51 KBOX 192105 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 405 PM EST Wed Feb 19 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-201000- 405 PM EST Wed Feb 19 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... Low pres will pass well southeast of the Benchmark today into tonight. This will be followed by a a period of gusty NW winds as ridge of high pres building in from the W later Fri into Sat. High pres likely remains in control through this weekend. More unsettled weather possible for early next week. $$ ANZ250-201000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds. .THU NIGHT...N winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: N 3 ft at 4 seconds, becoming N 5 ft at 5 seconds. A chance of snow in the evening. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at 10 seconds. A chance of light freezing spray in the morning. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at 9 seconds. A chance of light freezing spray. .SAT AND SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 6 seconds and E 1 foot at 9 seconds. .SUN THROUGH MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-201000- Massachusetts Bay and Ipswich Bay- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 4 seconds, becoming N 2 ft at 3 seconds. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds. Light freezing spray after midnight. .FRI...NW winds 20 to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 10 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of light freezing spray. .SAT AND SAT NIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and NE 2 ft at 7 seconds. .SUN THROUGH MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt. Seas around 2 ft. A chance of rain. 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. $$ ANZ231-201000- Cape Cod Bay- 405 PM EST Wed Feb 19 2025 .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 6 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 9 seconds. A chance of snow in the afternoon. .THU NIGHT...N winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft at 4 seconds and S 1 foot at 9 seconds. A chance of snow. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and S 1 foot at 10 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and SE 1 foot at 9 seconds. A chance of light freezing spray. .SAT AND SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds and E 1 foot at 9 seconds. .SUN THROUGH MON...S winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-201000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 405 PM EST Wed Feb 19 2025 .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and N 1 foot at 6 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 8 seconds. A chance of snow. Vsby 1 to 3 NM. .THU NIGHT...N winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 9 seconds, becoming N 5 ft at 5 seconds and S 2 ft at 10 seconds. A chance of snow. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .FRI...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: N 6 ft at 6 seconds and S 3 ft at 9 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 7 seconds and SE 2 ft at 9 seconds. .SAT...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: N 3 ft at 7 seconds and E 1 foot at 9 seconds, becoming NW 3 ft at 6 seconds and E 1 foot at 9 seconds. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN THROUGH MON NIGHT...S 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. $$ ANZ255-201000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 405 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and N 1 foot at 6 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SW 2 ft at 6 seconds. A chance of snow in the morning, then snow likely in the afternoon. Vsby 1 to 3 NM. .THU NIGHT...NW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 10 seconds, becoming N 5 ft at 5 seconds and S 3 ft at 10 seconds. Snow likely, mainly in the evening. Light freezing spray after midnight. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .FRI...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and S 3 ft at 9 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 6 seconds and NE 2 ft at 7 seconds. A chance of light freezing spray. .SAT AND SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and NE 2 ft at 7 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. .MON...S winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-201000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 405 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 5 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 8 seconds. A chance of snow in the afternoon. .THU NIGHT...NW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 4 to 6 ft after midnight. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 10 seconds, becoming N 5 ft at 4 seconds and S 3 ft at 9 seconds. A chance of snow. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 5 seconds and S 3 ft at 9 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 3 to 5 ft. Wave Detail: N 5 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of light freezing spray. .SAT AND SAT NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and E 1 foot at 9 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. .MON...S winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...S winds 10 to 15 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. $$ ANZ232-201000- Nantucket Sound- 405 PM EST Wed Feb 19 2025 .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: NW 2 ft at 5 seconds and S 1 foot at 8 seconds, becoming NW 1 foot at 5 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 7 seconds. A chance of snow. Vsby 1 to 3 NM. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 3 seconds and S 1 foot at 10 seconds. A chance of snow. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 9 seconds. A chance of light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 2 ft at 7 seconds. .SAT AND SAT NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 7 seconds. .SUN THROUGH MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-201000- Vineyard Sound- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: W 2 ft at 5 seconds and N 1 foot at 6 seconds, becoming W 1 foot at 5 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 4 seconds and S 1 foot at 7 seconds. A chance of snow in the afternoon. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and S 1 foot at 9 seconds. A chance of snow in the evening. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and S 2 ft at 9 seconds. A chance of light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds and S 1 foot at 9 seconds. .SAT AND SAT NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 9 seconds. .SUN THROUGH MON NIGHT...S 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. $$ ANZ234-201000- Buzzards Bay- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: W 2 ft at 5 seconds and N 1 foot at 5 seconds, becoming NW 1 foot at 5 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 8 seconds. A chance of snow in the afternoon. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 9 seconds. A chance of snow in the evening. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and S 1 foot at 9 seconds. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and S 1 foot at 9 seconds. .SAT AND SAT NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 9 seconds. .SUN THROUGH MON NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-201000- Rhode Island Sound- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and S 1 foot at 8 seconds. .THU...N winds 10 to 15 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 8 seconds. A chance of snow in the afternoon with vsby 1 to 3 NM. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and S 2 ft at 10 seconds. A chance of snow in the evening. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 5 seconds and S 3 ft at 9 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of light freezing spray in the evening. .SAT AND SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and N 1 foot at 5 seconds. .SUN THROUGH MON 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. $$ ANZ237-201000- Block Island Sound- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 8 seconds. A chance of snow in the afternoon with vsby 1 to 3 NM. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and S 2 ft at 9 seconds. A chance of snow in the evening. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and S 2 ft at 9 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at 9 seconds. .SAT AND SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 foot at 8 seconds. .SUN THROUGH MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-201000- Boston Harbor- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt this evening. Waves around 2 ft this evening, then 1 foot or less. .THU...N winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Waves around 2 ft. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of light freezing spray in the evening. .SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .SUN THROUGH MON NIGHT...S winds 5 to 10 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. $$ ANZ236-201000- Narragansett Bay- 405 PM EST Wed Feb 19 2025 .TONIGHT...NW winds 5 to 10 kt. Waves around 2 ft this evening, then 1 foot or less. .THU...N winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .FRI...NW winds around 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. .SAT AND SAT NIGHT...W winds around 10 kt. Waves around 2 ft. .SUN THROUGH MON NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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