FZUS51 KBOX 191805 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 PM EST Wed Feb 19 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-200700- 105 PM EST Wed Feb 19 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... A ridge of high pres noses eastward today and tonight. Low pres will pass well southeast of the Benchmark Thu into Thu night. 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. $$ ANZ250-200700- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 105 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds. Light freezing spray. .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds. .THU NIGHT...N winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: N 3 ft at 4 seconds, becoming N 5 ft at 5 seconds. A chance of snow in the evening. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at 10 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at 9 seconds. A chance of light freezing spray. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-200700- Massachusetts Bay and Ipswich Bay- 105 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 5 seconds. .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 around 2 ft. Wave Detail: N 2 ft at 3 seconds. .THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 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 THROUGH SUN NIGHT...W 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. $$ ANZ231-200700- Cape Cod Bay- 105 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds. .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 6 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 9 seconds. A chance of snow in the afternoon. .THU NIGHT...N winds 15 to 20 kt, becoming NW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 9 seconds. A chance of snow. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and S 1 foot at 10 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and SE 1 foot at 9 seconds. A chance of light freezing spray. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-200700- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 105 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 7 seconds and S 1 foot at 8 seconds. Light freezing spray. .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 3 ft, building to 3 to 5 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. .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...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SAT NIGHT THROUGH SUN NIGHT...W 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. $$ ANZ255-200700- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 105 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .THIS AFTERNOON...W winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 7 seconds and N 1 foot at 6 seconds. .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and N 1 foot at 6 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SW 2 ft at 6 seconds. A chance of snow in the morning, then snow likely in the afternoon. Vsby 1 to 3 NM. .THU NIGHT...NW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 10 seconds, becoming N 5 ft at 5 seconds and S 3 ft at 10 seconds. Snow likely, mainly in the evening. Light freezing spray after midnight. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .FRI...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and S 3 ft at 9 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 6 seconds and NE 2 ft at 7 seconds. A chance of light freezing spray. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-200700- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 105 PM EST Wed Feb 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .THIS AFTERNOON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds and S 1 foot at 8 seconds. .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the 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 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 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 4 to 6 ft. Wave Detail: N 5 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of light freezing spray. .SAT THROUGH SUN NIGHT...NW 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. $$ ANZ232-200700- Nantucket Sound- 105 PM EST Wed Feb 19 2025 .THIS AFTERNOON...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and N 1 foot at 6 seconds. .TONIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 5 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 7 seconds. A chance of snow. Vsby 1 to 3 NM. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 3 seconds and S 1 foot at 10 seconds. A chance of snow. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 9 seconds. A chance of light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 2 ft at 7 seconds. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-200700- Vineyard Sound- 105 PM EST Wed Feb 19 2025 .THIS AFTERNOON...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and N 1 foot at 6 seconds. .TONIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 5 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: 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 THROUGH SUN NIGHT...W 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. $$ ANZ234-200700- Buzzards Bay- 105 PM EST Wed Feb 19 2025 .THIS AFTERNOON...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and N 1 foot at 6 seconds. .TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and N 1 foot at 5 seconds. .THU...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot at 8 seconds. A chance of snow in the afternoon. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 9 seconds. A chance of snow in the evening. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and S 1 foot at 9 seconds. A chance of light freezing spray in the morning. .FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and S 1 foot at 9 seconds. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-200700- Rhode Island Sound- 105 PM EST Wed Feb 19 2025 .THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and S 1 foot at 8 seconds. .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 around 2 ft. 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 THROUGH SUN NIGHT...NW 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. $$ ANZ237-200700- Block Island Sound- 105 PM EST Wed Feb 19 2025 .THIS AFTERNOON...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and S 1 foot at 8 seconds. .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and S 1 foot at 8 seconds. .THU...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 8 seconds. A chance of snow in the afternoon with vsby 1 to 3 NM. .THU NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 2 ft at 9 seconds. A chance of snow in the evening. Light freezing spray after midnight. Vsby 1 to 3 NM. .FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and S 2 ft at 9 seconds. Light freezing spray in the morning. .FRI NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at 9 seconds. .SAT THROUGH SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-200700- Boston Harbor- 105 PM EST Wed Feb 19 2025 .THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the 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 AND FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of light freezing spray. .SAT THROUGH SUN NIGHT...W 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. $$ ANZ236-200700- Narragansett Bay- 105 PM EST Wed Feb 19 2025 .THIS AFTERNOON...W winds 10 to 15 kt. Waves around 2 ft. .TONIGHT...NW winds 5 to 10 kt. Waves around 2 ft. .THU...N winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .FRI AND FRI NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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