FZUS51 KBOX 092105 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 404 PM EST Mon Feb 9 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-101000- 404 PM EST Mon Feb 9 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure crest over the MA and RI waters Monday night and Tuesday morning, yielding diminishing freezing spray and winds. Low pressure tracks across northern New England Tuesday night, while a weaker secondary low tries to develop near Cape Cod. This secondary low becomes the dominant low Wed south of Nova Scotia, and eventually into a gale center Thu, as it heads towards Newfoundland. Dry WNW winds prevail into Friday and possibly Saturday. $$ ANZ250-101000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: N 4 ft at 6 seconds and E 3 ft at 11 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 6 seconds and W 2 ft at 4 seconds. .TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 3 seconds and NE 2 ft at 6 seconds. Snow. Rain likely after midnight. .WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and E 1 foot at 5 seconds. A chance of snow. A chance of rain in the morning. .WED NIGHT...NW winds around 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and NE 2 ft at 6 seconds. A chance of snow. .THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 6 seconds and E 1 foot at 12 seconds. .THU NIGHT...NW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of light freezing spray after midnight. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of light freezing spray. .FRI NIGHT THROUGH SAT NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-101000- Massachusetts Bay and Ipswich Bay- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and E 3 ft at 11 seconds. .TUE...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and E 2 ft at 11 seconds. A chance of snow in the afternoon. .TUE NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 2 ft at 6 seconds. Snow likely. A chance of rain after midnight. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at 5 seconds. A chance of snow and rain in the morning. .WED NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and E 1 foot at 10 seconds. .THU AND THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and E 1 foot at 11 seconds. A chance of light freezing spray. .FRI THROUGH SAT NIGHT...NW 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. $$ ANZ231-101000- Cape Cod Bay- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 4 ft at 6 seconds and E 2 ft at 12 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds and E 2 ft at 11 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds and SW 1 foot at 4 seconds. Snow in the evening, then rain with a chance of snow after midnight. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and NE 1 foot at 5 seconds. A chance of rain in the morning. .WED NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and SE 1 foot at 6 seconds. .THU...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds and E 1 foot at 12 seconds. A chance of light freezing spray in the morning. .THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-101000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: N 5 ft at 6 seconds and E 4 ft at 11 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 6 seconds and E 3 ft at 11 seconds. .TUE NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 7 seconds and SW 2 ft at 4 seconds. Rain likely with a chance of snow. .WED...W winds 10 to 15 kt, becoming NW 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and NE 2 ft at 6 seconds. A chance of rain. .WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 6 seconds and S 1 foot at 7 seconds. A chance of snow. .THU AND THU NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft. Wave Detail: N 5 ft at 7 seconds and E 1 foot at 13 seconds. .FRI THROUGH SAT NIGHT...NW 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. $$ ANZ255-101000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 4 ft at 5 seconds and E 4 ft at 12 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and NE 2 ft at 6 seconds. .TUE NIGHT...S winds 10 to 15 kt, becoming SW with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 11 seconds. Rain likely. A chance of snow in the evening. .WED...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 7 seconds and NE 1 foot at 6 seconds. A chance of rain in the morning. .WED NIGHT...NW winds 20 to 25 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 7 seconds and E 1 foot at 11 seconds. A chance of light freezing spray after midnight. .THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 7 seconds and NE 1 foot at 6 seconds. A chance of light freezing spray in the morning. .THU NIGHT...NW winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of light freezing spray after midnight. .FRI...NW winds 10 to 15 kt. Seas 2 to 4 ft. A chance of light freezing spray. .FRI NIGHT THROUGH SAT NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-101000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: N 4 ft at 4 seconds and E 3 ft at 13 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at 12 seconds. .TUE NIGHT...S winds 10 to 15 kt, becoming W with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 12 seconds. Rain, mainly in the evening. .WED...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 11 seconds. A chance of rain in the morning. .WED NIGHT...NW winds 20 to 25 kt. Seas 4 to 6 ft. Wave Detail: NW 6 ft at 7 seconds and E 1 foot at 10 seconds. .THU...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and S 1 foot at 8 seconds. A chance of light freezing spray in the morning. .THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft. A chance of light freezing spray after midnight. .FRI...NW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of light freezing spray. .FRI NIGHT THROUGH SAT 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. $$ ANZ232-101000- Nantucket Sound- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and NE 3 ft at 7 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 7 seconds. .TUE NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot at 7 seconds. Rain. Snow in the evening. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 1 foot at 5 seconds. A chance of rain in the morning. .WED NIGHT AND THU...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and S 1 foot at 5 seconds. A chance of light freezing spray through the day. .THU NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and NE 1 foot at 8 seconds. .FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-101000- Vineyard Sound- 404 PM EST Mon Feb 9 2026 .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and E 1 foot at 13 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 1 foot at 4 seconds and NE 1 foot at 5 seconds, becoming SW 1 foot at 4 seconds and NE 1 foot at 6 seconds. .TUE NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 7 seconds, becoming SW 2 ft at 5 seconds and NE 1 foot at 6 seconds. Rain. A chance of snow in the evening. .WED...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and NE 1 foot at 4 seconds. A chance of rain in the morning. .WED NIGHT AND THU...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 10 seconds. A chance of light freezing spray through the day. .THU NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 5 seconds and S 1 foot at 8 seconds. .FRI THROUGH SAT NIGHT...NW 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. $$ ANZ234-101000- Buzzards Bay- 404 PM EST Mon Feb 9 2026 .TONIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and N 2 ft at 6 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 4 seconds and N 1 foot at 5 seconds. .TUE NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: S 1 foot at 3 seconds and NE 1 foot at 6 seconds, becoming SW 1 foot at 4 seconds and NE 1 foot at 6 seconds. Rain likely. Snow in the evening. .WED...NW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at 4 seconds. A chance of rain and snow in the morning. .WED NIGHT THROUGH THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 11 seconds. .FRI THROUGH SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 14 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-101000- Rhode Island Sound- 404 PM EST Mon Feb 9 2026 .TONIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and E 2 ft at 14 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and N 1 foot at 4 seconds. .TUE NIGHT...S winds 10 to 15 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 12 seconds. Rain. A chance of snow in the evening. .WED...W winds 10 to 15 kt, becoming NW 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and E 1 foot at 11 seconds. A chance of rain in the morning. .WED NIGHT AND THU...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and E 1 foot at 11 seconds. A chance of light freezing spray through the day. .THU NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and S 1 foot at 9 seconds. .FRI THROUGH SAT NIGHT...NW 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. $$ ANZ237-101000- Block Island Sound- 404 PM EST Mon Feb 9 2026 .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at 14 seconds. .TUE...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 12 seconds and W 1 foot at 3 seconds. .TUE NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 12 seconds. Rain with a chance of snow in the evening, then a chance of rain after midnight. .WED...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and S 2 ft at 6 seconds. A chance of rain in the morning. .WED NIGHT AND THU...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and S 2 ft at 7 seconds. A chance of light freezing spray through the day. .THU NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and S 1 foot at 9 seconds. .FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-101000- Boston Harbor- 404 PM EST Mon Feb 9 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... .TONIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Waves around 2 ft this evening, then 1 foot or less. .TUE...W winds 5 to 10 kt, becoming S in the afternoon. Waves 1 foot or less. A chance of snow in the afternoon. .TUE NIGHT...S winds around 10 kt, becoming SW after midnight. Waves 1 foot or less. Snow. A chance of rain after midnight. .WED...NW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. A chance of snow in the morning. .WED NIGHT THROUGH THU NIGHT...NW winds 15 to 20 kt. Waves around 2 ft. .FRI THROUGH SAT NIGHT...NW winds 10 to 15 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. $$ ANZ236-101000- Narragansett Bay- 404 PM EST Mon Feb 9 2026 .TONIGHT...NW winds 5 to 10 kt. Waves around 2 ft. .TUE...NW winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less, then around 2 ft after midnight. Snow and rain likely in the evening, then a chance of rain after midnight. .WED...NW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of rain in the morning. .WED NIGHT THROUGH THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI THROUGH SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston