Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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690 FZUS51 KBOX 060204 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1004 PM EDT Sat Oct 5 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-061500- 1004 PM EDT Sat Oct 5 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure is briefly in place through Sunday, followed by a cold front passage on Monday. An expansive high pressure develops to the northwest and builds into our region throughout the week. Breezy northwest flow continues for much of the week ahead along with large swells kicked up by distant Hurricane Kirk arrive southeast of the islands by Monday. $$ ANZ250-061500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1004 PM EDT Sat Oct 5 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT SUNDAY THROUGH TUESDAY MORNING... .OVERNIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 9 seconds. .SUN...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 15 seconds and NE 3 ft at 5 seconds. .SUN NIGHT...E winds around 5 kt, becoming S after midnight. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 15 seconds and NE 3 ft at 5 seconds. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 16 seconds and S 1 foot at 3 seconds. Patchy fog. A chance of showers in the morning. Showers likely in the afternoon. Vsby 1 to 3 NM. .MON NIGHT...S winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 15 seconds and E 2 ft at 8 seconds. Showers likely, mainly in the evening. Patchy fog in the evening with vsby 1 to 3 NM. .TUE...NW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 14 seconds and E 5 ft at 12 seconds. .TUE NIGHT...NW winds around 10 kt. Seas 3 to 5 ft. .WED THROUGH THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-061500- Massachusetts Bay and Ipswich Bay- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and E 2 ft at 9 seconds. .SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and E 2 ft at 9 seconds. .SUN NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 16 seconds and NE 3 ft at 6 seconds. A chance of showers after midnight. .MON...SE winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 17 seconds and SE 2 ft at 4 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 16 seconds and E 3 ft at 10 seconds. Showers likely, mainly in the evening. Patchy fog in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 12 seconds and E 5 ft at 15 seconds. .WED THROUGH THU 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. $$ ANZ231-061500- Cape Cod Bay- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and E 2 ft at 9 seconds. .SUN NIGHT...E winds around 5 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 2 ft at 15 seconds. .MON...S winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 16 seconds and S 1 foot at 2 seconds. A chance of showers in the morning, then showers likely in the afternoon. Patchy fog in the afternoon. Vsby 1 to 3 NM. .MON NIGHT...S winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 16 seconds and E 2 ft at 9 seconds. Showers likely, mainly in the evening. Patchy fog in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 12 seconds and E 4 ft at 15 seconds. .WED THROUGH THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-061500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1004 PM EDT Sat Oct 5 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT SUNDAY THROUGH TUESDAY MORNING... .OVERNIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 9 seconds. .SUN...N winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: SE 4 ft at 15 seconds and NE 3 ft at 6 seconds. .SUN NIGHT...NE winds around 5 kt, becoming SE around 5 kt after midnight. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 15 seconds and NE 3 ft at 6 seconds. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 16 seconds and NE 2 ft at 5 seconds. A chance of showers in the morning, then showers likely in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 6 to 7 ft. Wave Detail: SE 7 ft at 15 seconds and S 2 ft at 5 seconds. Showers likely, mainly in the evening. Patchy fog in the evening with vsby 1 to 3 NM. .TUE...NW winds 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 13 seconds and W 2 ft at 6 seconds. .TUE NIGHT...W winds around 10 kt. Seas 4 to 6 ft. .WED THROUGH THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 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. $$ ANZ255-061500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1004 PM EDT Sat Oct 5 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT SUNDAY THROUGH TUESDAY MORNING... .OVERNIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and N 2 ft at 3 seconds. .SUN...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SE 3 ft at 9 seconds and SE 3 ft at 15 seconds. .SUN NIGHT...E winds around 5 kt, becoming SE after midnight. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 17 seconds and NE 2 ft at 6 seconds. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Wave Detail: SE 6 ft at 16 seconds and S 4 ft at 5 seconds. A chance of showers in the morning, then showers likely in the afternoon. Patchy fog in the afternoon. Vsby 1 to 3 NM. .MON NIGHT...W winds 10 to 15 kt, becoming NW after midnight. Seas 5 to 7 ft. Wave Detail: SE 6 ft at 16 seconds and SW 4 ft at 6 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .TUE...NW winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 14 seconds and W 4 ft at 6 seconds. .TUE NIGHT...W winds around 10 kt. Seas 3 to 5 ft. .WED THROUGH THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-061500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1004 PM EDT Sat Oct 5 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE SUNDAY NIGHT THROUGH TUESDAY MORNING... .OVERNIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 15 seconds. .SUN...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and SE 3 ft at 15 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 16 seconds and E 3 ft at 9 seconds. A chance of showers after midnight. .MON...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 16 seconds and S 4 ft at 6 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 15 seconds and SW 4 ft at 6 seconds. Patchy fog in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 14 seconds and W 4 ft at 6 seconds. .WED THROUGH THU 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. $$ ANZ232-061500- Nantucket Sound- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 1 foot at 3 seconds and E 1 foot at 9 seconds. .SUN...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and E 1 foot at 9 seconds. .SUN NIGHT...E winds around 5 kt, becoming SE after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and E 2 ft at 15 seconds. A chance of showers after midnight. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SE 2 ft at 5 seconds and SE 2 ft at 16 seconds. A chance of showers in the morning, then showers likely in the afternoon. Patchy fog in the afternoon. Vsby 1 to 3 NM. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 16 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 14 seconds and W 2 ft at 4 seconds. .WED THROUGH THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-061500- Vineyard Sound- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds around 10 kt. Seas 1 foot or less, then around 2 ft. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SUN...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SE 2 ft at 17 seconds. A chance of showers after midnight. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 17 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and SE 2 ft at 16 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 14 seconds and W 2 ft at 5 seconds. .WED THROUGH THU 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. $$ ANZ234-061500- Buzzards Bay- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SUN...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 2 seconds and SE 1 foot at 9 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 16 seconds and NE 1 foot at 2 seconds. A chance of showers after midnight. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 16 seconds and S 2 ft at 4 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 16 seconds and SW 2 ft at 6 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 12 seconds and N 2 ft at 4 seconds. .WED THROUGH THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-061500- Rhode Island Sound- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 3 seconds. .SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 17 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 17 seconds and SE 2 ft at 9 seconds. A chance of showers after midnight. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 16 seconds and SE 4 ft at 5 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 4 ft at 16 seconds. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 14 seconds and SW 3 ft at 6 seconds. .WED THROUGH THU NIGHT...NW 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. $$ ANZ237-061500- Block Island Sound- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SE 1 foot at 15 seconds. .SUN...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 15 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 16 seconds and SE 2 ft at 9 seconds. A chance of showers after midnight. .MON...S winds 10 to 15 kt, becoming SW in the afternoon. Gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 16 seconds and SW 3 ft at 5 seconds. Patchy fog. Showers. Vsby 1 to 3 NM. .MON NIGHT THROUGH TUE NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 16 seconds and SW 3 ft at 6 seconds. .WED THROUGH THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 12 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-061500- Boston Harbor- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds 5 to 10 kt. Waves 1 foot or less. .SUN...N winds 5 to 10 kt, becoming NE in the afternoon. Waves 1 foot or less. .SUN NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers after midnight. .MON...SE winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Showers. Vsby 1 to 3 NM. .MON NIGHT...NW winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. At the outer harbor entrance, waves 2 to 4 ft. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...W winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. .WED THROUGH THU NIGHT...NW 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. $$ ANZ236-061500- Narragansett Bay- 1004 PM EDT Sat Oct 5 2024 .OVERNIGHT...N winds 5 to 10 kt. Waves around 2 ft. .SUN...N winds around 5 kt, becoming E in the afternoon. Waves around 2 ft. .SUN NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers after midnight. .MON...S winds 5 to 10 kt, becoming SW in the afternoon. Gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. Showers. Vsby 1 to 3 NM. .MON NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog in the evening. A chance of showers in the evening with vsby 1 to 3 NM. .TUE AND TUE NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. .WED THROUGH THU NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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