FZUS51 KBOX 091705 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 PM EDT Fri May 9 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-100600- 105 PM EDT Fri May 9 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... A sfc low pushes into the area today, bringing a quick round of 25kt winds to the waters tonight. Low lifts out to the NE Sat morning and a high settles in for the weekend. $$ ANZ250-100600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 105 PM EDT Fri May 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THIS AFTERNOON...E winds around 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and SE 4 ft at 9 seconds. A chance of showers. Vsby 1 NM or less. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: NE 5 ft at 6 seconds and SE 4 ft at 9 seconds. Showers. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 6 seconds and SE 4 ft at 9 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 9 seconds and W 3 ft at 5 seconds. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and W 2 ft at 4 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-100600- Massachusetts Bay and Ipswich Bay- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of showers. Vsby 1 NM or less. .TONIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and SE 3 ft at 9 seconds. Showers. Vsby 1 NM or less. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 6 seconds and SE 3 ft at 9 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and W 2 ft at 4 seconds. .SUN AND SUN NIGHT...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 NE 2 ft at 6 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 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. $$ ANZ231-100600- Cape Cod Bay- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and E 1 foot at 3 seconds. Showers likely. Vsby 1 NM or less. .TONIGHT...E winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 4 seconds. Showers. Vsby 1 NM or less. .SAT...SW winds 10 to 15 kt, becoming W in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and NE 2 ft at 6 seconds. A chance of showers. Vsby 1 to 3 NM in the morning. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SW 2 ft at 6 seconds. .SUN AND SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and SE 2 ft at 9 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and N 1 foot at 4 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-100600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 105 PM EDT Fri May 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 4 ft. Wave Detail: SE 4 ft at 9 seconds and E 2 ft at 3 seconds. A chance of showers. Vsby 1 NM or less. .TONIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 9 seconds and NE 3 ft at 6 seconds. Showers. Vsby 1 NM or less. .SAT...SW winds 15 to 20 kt, becoming W in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 9 seconds and SW 4 ft at 5 seconds. A chance of showers in the morning with vsby 1 NM or less. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SE 4 ft at 9 seconds and W 3 ft at 5 seconds. .SUN AND SUN NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and N 2 ft at 5 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and SW 2 ft at 3 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. $$ ANZ255-100600- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 105 PM EDT Fri May 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THIS AFTERNOON...E winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and E 2 ft at 4 seconds. A chance of showers. Vsby 1 NM or less. .TONIGHT...SE winds around 15 kt, becoming S after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 9 seconds and SE 2 ft at 5 seconds. Showers. Vsby 1 NM or less. .SAT...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 5 seconds and SE 5 ft at 9 seconds. A chance of showers in the morning with vsby 1 to 3 NM. .SAT NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 7 seconds and E 3 ft at 7 seconds. .SUN...NW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 3 ft at 9 seconds. .SUN NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and W 2 ft at 5 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-100600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 105 PM EDT Fri May 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .THIS AFTERNOON...E winds around 15 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 9 seconds and E 2 ft at 4 seconds. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...SE winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 9 seconds and SE 3 ft at 5 seconds. Showers in the evening. A chance of showers after midnight. Vsby 1 NM or less. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and SE 5 ft at 9 seconds. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and SE 3 ft at 9 seconds. .SUN...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and W 2 ft at 5 seconds. .SUN NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and W 2 ft at 4 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. 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. $$ ANZ232-100600- Nantucket Sound- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers. Vsby 1 NM or less. .TONIGHT...E winds around 15 kt, becoming S after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds and SE 2 ft at 9 seconds. Showers. Vsby 1 NM or less. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers in the morning with vsby 1 to 3 NM. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and NE 1 foot at 6 seconds. .SUN AND SUN NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and NE 1 foot at 6 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and N 1 foot at 4 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-100600- Vineyard Sound- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and E 1 foot at 3 seconds. Showers likely. Vsby 1 NM or less. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and SE 1 foot at 4 seconds. Showers. Vsby 1 NM or less. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds and SE 2 ft at 9 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE 2 ft at 9 seconds. .SUN AND SUN NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 9 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and N 1 foot at 4 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. $$ ANZ234-100600- Buzzards Bay- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and E 1 foot at 3 seconds. Showers likely. Vsby 1 NM or less. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and SE 1 foot at 4 seconds. Showers. Vsby 1 NM or less. .SAT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 2 ft at 9 seconds. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and NE 1 foot at 6 seconds. .SUN AND SUN NIGHT...N winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 4 seconds and NE 1 foot at 6 seconds. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and N 1 foot at 4 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-100600- Rhode Island Sound- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and E 2 ft at 4 seconds. Showers likely. Vsby 1 NM or less. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt, becoming S 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and SE 3 ft at 5 seconds. Showers in the evening. A chance of showers after midnight. Vsby 1 NM or less. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 4 ft at 9 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds and SE 3 ft at 9 seconds. .SUN...NW winds around 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot at 3 seconds. .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. $$ ANZ237-100600- Block Island Sound- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and E 3 ft at 4 seconds. Showers with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt, becoming SW 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds and SE 4 ft at 9 seconds. Showers in the evening. A chance of showers after midnight. Vsby 1 NM or less. .SAT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds and SW 3 ft at 5 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and W 2 ft at 5 seconds. .SUN...NW winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 4 seconds. .SUN NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and W 1 foot at 4 seconds. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-100600- Boston Harbor- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...NE winds around 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers. Vsby 1 NM or less. .TONIGHT...E winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight. Waves 2 to 3 ft. Showers. Vsby 1 NM or less. .SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. Vsby 1 to 3 NM in the morning. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. .SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .MON THROUGH TUE NIGHT...SW 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. $$ ANZ236-100600- Narragansett Bay- 105 PM EDT Fri May 9 2025 .THIS AFTERNOON...E winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Showers. Vsby 1 NM or less. .TONIGHT...E winds 10 to 15 kt with gusts up to 25 kt, becoming S 5 to 10 kt after midnight. Waves 2 to 4 ft. Showers. Vsby 1 NM or less. .SAT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. .SUN AND SUN NIGHT...N winds 5 to 10 kt. Waves around 2 ft. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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