


Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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475 FZUS51 KBOX 141106 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 705 AM EDT Sat Jun 14 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-150000- 705 AM EDT Sat Jun 14 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres remains E of New England. Weak low pres will track S of the waters Sat followed by high pres from the Maritimes building into the ern MA waters Sun. This high will move offshore Mon then another low pres will track S of the waters Tue. Weak high pres builds into the waters Wed. $$ ANZ250-150000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and SE 2 ft at 9 seconds. Showers this morning, then showers likely with isolated tstms this afternoon. Patchy fog this afternoon. .TONIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds. Patchy fog in the evening. Showers likely in the evening. .SUN...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds. .MON AND MON NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds. .TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 7 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-150000- Massachusetts Bay and Ipswich Bay- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. A slight chance of tstms. Showers likely this morning, then showers this afternoon. .TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft at 8 seconds. Patchy fog in the evening. Showers likely in the evening. .SUN...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and E 1 foot at 4 seconds. .MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds. .MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 1 foot at 4 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 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. $$ ANZ231-150000- Cape Cod Bay- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 1 foot at 6 seconds. A chance of showers this morning, then showers likely with isolated tstms this afternoon. Patchy fog this afternoon. .TONIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds. Patchy fog in the evening. Showers likely in the evening. .SUN...E winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 3 seconds. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 foot at 3 seconds. .MON AND MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 foot at 2 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 1 foot at 6 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-150000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and S 2 ft at 6 seconds. A chance of showers this morning, then showers likely with a slight chance of tstms this afternoon. Patchy fog this afternoon. Vsby 1 to 3 NM. .TONIGHT...E winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 5 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 5 seconds. .SUN NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 1 foot at 7 seconds. .MON AND MON NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 1 foot at 7 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. 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. $$ ANZ255-150000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 4 seconds and SE 3 ft at 7 seconds. Patchy fog. Isolated tstms. Showers this morning, then showers likely this afternoon. Vsby 1 to 3 NM. .TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 6 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and NE 1 foot at 4 seconds. .SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and NE 1 foot at 3 seconds. .MON AND MON NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at 7 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-150000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 705 AM EDT Sat Jun 14 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM EDT THIS EVENING THROUGH LATE TONIGHT... .TODAY...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 6 seconds. Patchy fog. Showers with a slight chance of tstms. Vsby 1 NM or less, increasing to 1 to 3 NM this afternoon. .TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 5 seconds and SE 4 ft at 9 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and NE 1 foot at 4 seconds. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and NE 1 foot at 3 seconds. .MON AND MON NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 7 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and S 2 ft at 8 seconds. 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. $$ ANZ232-150000- Nantucket Sound- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt, becoming NE 15 to 20 kt this afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds. A chance of showers this morning, then showers likely with isolated tstms this afternoon. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at 3 seconds. .MON AND MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and E 1 foot at 3 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at 4 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-150000- Vineyard Sound- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 6 seconds. Showers likely this morning, then showers with isolated tstms this afternoon. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...NE winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 7 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .SUN...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 3 seconds. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 3 seconds. .MON AND MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 2 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and E 1 foot at 2 seconds. 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. $$ ANZ234-150000- Buzzards Bay- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 6 seconds. Showers likely this morning, then showers likely with isolated tstms this afternoon. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 7 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .SUN...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 3 seconds. .SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at 2 seconds, becoming E 1 foot at 2 seconds and SE 1 foot at 7 seconds. .MON AND MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at 2 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-150000- Rhode Island Sound- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 10 to 15 kt, becoming NE 15 to 20 kt this afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds. Patchy fog. Isolated tstms. Showers. Vsby 1 to 3 NM this afternoon. .TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds. Patchy fog in the evening. Showers likely in the evening with vsby 1 to 3 NM. .SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and NE 2 ft at 3 seconds. .SUN NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and NE 1 foot at 3 seconds. .MON AND MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 2 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. 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. $$ ANZ237-150000- Block Island Sound- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and E 2 ft at 3 seconds. Patchy fog. A slight chance of tstms. Showers this morning, then showers likely this afternoon. Vsby 1 to 3 NM. .TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 5 seconds. Showers likely, mainly in the evening. Patchy fog in the evening with vsby 1 to 3 NM. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and NE 2 ft at 4 seconds. .SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and NE 1 foot at 3 seconds. .MON AND MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 2 seconds. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-150000- Boston Harbor- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. A slight chance of tstms. Showers. Vsby 1 to 3 NM this afternoon. .TONIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. .SUN...E winds 5 to 10 kt. Waves 1 foot or less. .SUN NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. .MON...E winds 5 to 10 kt. Waves 1 foot or less. .MON NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Waves 1 foot or less. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves around 2 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. $$ ANZ236-150000- Narragansett Bay- 705 AM EDT Sat Jun 14 2025 .TODAY...E winds 5 to 10 kt, becoming NE 10 to 15 kt this afternoon. Gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers this morning, then showers likely with a slight chance of tstms this afternoon. Patchy fog this afternoon with vsby 1 to 3 NM. .TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. A chance of showers. Patchy fog in the evening with vsby 1 to 3 NM. .SUN...E winds around 10 kt. Waves around 2 ft. .SUN NIGHT...E winds 5 to 10 kt. Waves around 2 ft. .MON AND MON NIGHT...E winds 5 to 10 kt. Waves around 2 ft. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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