Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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830 FZUS51 KBOX 281103 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 703 AM EDT Fri Jun 28 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-290000- 703 AM EDT Fri Jun 28 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres builds over the waters today, then moves offshore Sat. Another cold front should cross the waters sometime late Sun into Sun night. This will be followed by a ridge of high pressure early next week. $$ ANZ250-290000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 703 AM EDT Fri Jun 28 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .TODAY...NW winds 15 to 20 kt with gusts up to 25 kt, becoming SW 5 to 10 kt this afternoon. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and SE 2 ft at 9 seconds. .TONIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 8 seconds. .SAT...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and S 2 ft at 3 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 5 seconds. Showers after midnight. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SE 4 ft at 7 seconds and SW 3 ft at 4 seconds. Showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 4 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-290000- Massachusetts Bay and Ipswich Bay- 703 AM EDT Fri Jun 28 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .TODAY...NW winds 10 to 15 kt with gusts up to 25 kt, becoming SE 5 to 10 kt this afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 6 seconds. .TONIGHT...S winds around 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 3 seconds. .SAT...S 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: S 3 ft at 4 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 5 seconds. A chance of showers in the evening, then showers after midnight. .SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds. Showers. .SUN NIGHT...W winds 10 to 15 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. A chance of showers in the evening. .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. $$ ANZ231-290000- Cape Cod Bay- 703 AM EDT Fri Jun 28 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .TODAY...NW winds 15 to 20 kt with gusts up to 25 kt, becoming NE 5 to 10 kt this afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and E 1 foot at 7 seconds. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 1 foot at 5 seconds, becoming SW 1 foot at 3 seconds and NE 1 foot at 6 seconds. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds. Showers after midnight. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 3 seconds and S 3 ft at 6 seconds. Showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. A chance of showers in the evening. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-290000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 703 AM EDT Fri Jun 28 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt, becoming NW 5 to 10 kt this afternoon. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and SE 3 ft at 7 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 5 seconds and E 2 ft at 8 seconds. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and S 2 ft at 3 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 5 seconds. A chance of showers after midnight. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 5 seconds. Showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and W 2 ft at 4 seconds. Showers likely in the evening. A chance of showers after midnight. Vsby 1 to 3 NM in the evening. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...NW 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. $$ ANZ255-290000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 703 AM EDT Fri Jun 28 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt, becoming NE 5 to 10 kt this afternoon. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 3 ft at 7 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 4 seconds. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and S 2 ft at 3 seconds. .SAT NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 5 seconds. Showers likely after midnight. .SUN...SW winds 20 to 25 kt. Seas 5 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SW 1 foot at 4 seconds. Showers. .SUN NIGHT...SW winds 15 to 20 kt, becoming NW after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SW 1 foot at 4 seconds. Showers likely with a chance of tstms in the evening, then a chance of showers after midnight. Vsby 1 to 3 NM in the evening. .MON...N winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON NIGHT THROUGH TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-290000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 703 AM EDT Fri Jun 28 2024 .TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt this afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and SE 3 ft at 7 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 8 seconds. .SAT...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at 5 seconds. .SAT NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 5 seconds. Showers after midnight. .SUN...SW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: S 6 ft at 7 seconds and SW 1 foot at 4 seconds. Showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds and W 1 foot at 3 seconds. Showers likely, mainly in the evening. .MON...N winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT AND TUE...NE winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...SW 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. $$ ANZ232-290000- Nantucket Sound- 703 AM EDT Fri Jun 28 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt, becoming NE 5 to 10 kt this afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 3 seconds and SE 1 foot at 7 seconds. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .SAT...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 8 seconds. .SAT NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds. Showers likely after midnight. .SUN...SW winds 20 to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 3 ft at 7 seconds. Showers. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 7 seconds. Showers likely, mainly in the evening. .MON THROUGH TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-290000- Vineyard Sound- 703 AM EDT Fri Jun 28 2024 .TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt this afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SE 1 foot at 6 seconds. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and S 1 foot at 7 seconds. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and S 2 ft at 3 seconds. .SAT NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: S 4 ft at 5 seconds. Showers after midnight. .SUN...SW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 2 ft at 4 seconds. Showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SW 2 ft at 4 seconds. Showers likely in the evening. .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. $$ ANZ234-290000- Buzzards Bay- 703 AM EDT Fri Jun 28 2024 .TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt this afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and E 1 foot at 6 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and S 1 foot at 7 seconds. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and S 2 ft at 7 seconds. .SAT NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: S 4 ft at 5 seconds. Showers after midnight. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds. Showers. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SW 2 ft at 4 seconds. Showers likely in the evening. .MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-290000- Rhode Island Sound- 703 AM EDT Fri Jun 28 2024 .TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and NW 2 ft at 3 seconds. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and S 2 ft at 7 seconds. .SAT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds. .SAT NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 5 seconds. Showers after midnight. .SUN...SW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 4 seconds. Showers. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 1 foot at 4 seconds. Showers likely in the evening. .MON AND MON NIGHT...N winds 10 to 15 kt. Seas 2 to 4 ft. .TUE AND TUE NIGHT...NE winds 5 to 10 kt, becoming SW. 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. $$ ANZ237-290000- Block Island Sound- 703 AM EDT Fri Jun 28 2024 .TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt this afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and NW 2 ft at 3 seconds. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. .SAT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and S 2 ft at 3 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 5 seconds. A chance of showers in the evening, then showers with a chance of tstms after midnight with vsby 1 to 3 NM. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 2 ft at 4 seconds. Showers. A chance of tstms in the morning with vsby 1 to 3 NM. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 1 foot at 4 seconds. Showers likely in the evening. .MON AND MON NIGHT...N winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 2 to 4 ft. .TUE AND TUE NIGHT...NE winds 5 to 10 kt, becoming SW. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-290000- Boston Harbor- 703 AM EDT Fri Jun 28 2024 .TODAY...NW winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt this afternoon. Waves around 2 ft this morning, then 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 1 foot or less, then around 2 ft in the afternoon. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers in the evening, then showers after midnight. .SUN...SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Waves around 2 ft. Showers. .SUN NIGHT...W winds 10 to 15 kt, becoming NW after midnight. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S 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. $$ ANZ236-290000- Narragansett Bay- 703 AM EDT Fri Jun 28 2024 .TODAY...N winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt this afternoon. Waves around 2 ft. .TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. .SAT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Waves 3 to 5 ft. A chance of showers in the evening, then showers after midnight with vsby 1 to 3 NM. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 3 to 5 ft. Showers. A chance of tstms in the morning with vsby 1 to 3 NM. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Waves 2 to 4 ft. Showers likely in the evening. .MON THROUGH TUE NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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