


Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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624 FZUS51 KBOX 102304 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 704 PM EDT Fri Oct 10 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-111200- 704 PM EDT Fri Oct 10 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres over the north Atlantic continues on Sat. A coastal storm has the potential to bring easterly storm-force wind gusts and rain to the waters Sun into Mon. Decreasing winds and rain are expected through midweek as high pres rebuilds back in from the NW. $$ ANZ250-111200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 2 seconds and NE 2 ft at 5 seconds. .SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 4 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and SW 1 foot at 3 seconds. .SUN...E winds 15 to 20 kt with gusts up to 30 kt, increasing to 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 3 to 5 ft, building to 5 to 7 ft in the afternoon. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at 10 seconds, becoming E 5 ft at 6 seconds and SE 4 ft at 9 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 7 to 10 ft, building to 10 to 14 ft after midnight. Wave Detail: E 7 ft at 6 seconds and SE 7 ft at 9 seconds, becoming SE 12 ft at 12 seconds and NE 8 ft at 7 seconds. Showers likely. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 11 to 15 ft. Wave Detail: E 15 ft at 12 seconds and NE 8 ft at 7 seconds. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 12 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. A chance of showers. Vsby 1 to 3 NM. .WED AND WED NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-111200- Massachusetts Bay and Ipswich Bay- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...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 NE 2 ft at 6 seconds. .SAT...S winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 10 seconds, becoming S 1 foot at 3 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at 10 seconds, becoming E 2 ft at 3 seconds and SE 1 foot at 10 seconds. .SUN...E winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 5 seconds and SE 2 ft at 10 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 7 ft, building to 7 to 10 ft after midnight. Wave Detail: E 7 ft at 6 seconds and SE 5 ft at 9 seconds, becoming NE 9 ft at 7 seconds and SE 7 ft at 9 seconds. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 9 to 13 ft. Wave Detail: E 12 ft at 11 seconds and NE 8 ft at 7 seconds. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt, diminishing to 20 to 25 kt with gusts up to 30 kt after midnight. Seas 8 to 11 ft. Showers likely. Vsby 1 to 3 NM. .TUE...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .WED...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. .WED NIGHT...N winds 15 to 20 kt. Seas 3 to 5 ft. A chance of showers. 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. $$ ANZ231-111200- Cape Cod Bay- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 4 seconds. .SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less, then 2 to 3 ft after midnight. Wave Detail: SE 1 foot at 2 seconds and SW 1 foot at 3 seconds, becoming E 2 ft at 3 seconds and S 1 foot at 3 seconds. .SUN...E winds 15 to 20 kt with gusts up to 30 kt, increasing to 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: E 4 ft at 4 seconds and SE 4 ft at 9 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 12 seconds and NE 6 ft at 5 seconds. Showers likely in the evening, then showers after midnight. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 11 seconds and SE 7 ft at 12 seconds. Showers. Vsby 1 to 3 NM. .TUE...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM. .WED AND WED NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-111200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and W 1 foot at 3 seconds. .SAT...S winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and SW 1 foot at 3 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 4 ft at 4 seconds and SE 2 ft at 9 seconds. .SUN...E winds 20 to 25 kt with gusts up to 30 kt, increasing to 25 to 30 kt with gusts up to 40 kt in the afternoon. Seas 4 to 6 ft, building to 6 to 9 ft in the afternoon. Wave Detail: E 5 ft at 5 seconds and SE 3 ft at 9 seconds, becoming E 6 ft at 7 seconds and SE 2 ft at 14 seconds. A chance of showers in the afternoon. .SUN NIGHT...E winds 25 to 35 kt with gusts up to 45 kt. Seas 9 to 12 ft, building to 11 to 15 ft after midnight. Wave Detail: SE 10 ft at 10 seconds and E 8 ft at 7 seconds, becoming SE 14 ft at 12 seconds and NE 8 ft at 7 seconds. Showers likely in the evening, then showers after midnight. Vsby 1 to 3 NM. .MON...E winds 25 to 35 kt with gusts up to 40 kt. Seas 12 to 16 ft. Wave Detail: E 16 ft at 12 seconds and SE 9 ft at 12 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...E winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 11 to 15 ft, subsiding to 9 to 13 ft after midnight. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt. Seas 8 to 11 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 ft. Showers likely. Vsby 1 to 3 NM. .WED AND WED NIGHT...N winds 15 to 20 kt. Seas 5 to 8 ft. A chance of showers. Vsby 1 to 3 NM. 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. $$ ANZ255-111200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and S 1 foot at 2 seconds. .SAT...SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 15 to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: E 3 ft at 4 seconds and SE 3 ft at 9 seconds, becoming E 5 ft at 5 seconds and SE 3 ft at 9 seconds. .SUN...E winds 25 to 30 kt. Gusts up to 45 kt in the afternoon. Seas 6 to 9 ft, building to 8 to 11 ft in the afternoon. Wave Detail: E 7 ft at 6 seconds and SE 5 ft at 9 seconds, becoming E 8 ft at 6 seconds and SE 7 ft at 10 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 10 to 14 ft, building to 12 to 16 ft after midnight. Wave Detail: SE 10 ft at 11 seconds and E 9 ft at 7 seconds, becoming SE 12 ft at 12 seconds and NE 10 ft at 7 seconds. Showers. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 45 kt. Seas 12 to 16 ft. Wave Detail: E 15 ft at 12 seconds and NE 5 ft at 7 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...E winds 30 to 35 kt, becoming NE 25 to 30 kt after midnight. Seas 9 to 13 ft, subsiding to 8 to 11 ft after midnight. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to 10 ft. Showers. Vsby 1 to 3 NM. .TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .WED...N winds 20 to 25 kt. Seas 5 to 7 ft. A chance of showers. .WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. 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. $$ ANZ256-111200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds. .SAT...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SE 2 ft at 4 seconds. .SAT NIGHT...E winds 15 to 20 kt, increasing to 20 to 25 kt with gusts up to 30 kt after midnight. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: SE 4 ft at 8 seconds and E 3 ft at 4 seconds, becoming E 6 ft at 5 seconds and SE 4 ft at 8 seconds. .SUN...E winds 25 to 30 kt, becoming NE 30 to 35 kt in the afternoon. Gusts up to 45 kt. Seas 8 to 11 ft, building to 10 to 14 ft in the afternoon. Wave Detail: E 8 ft at 7 seconds and SE 6 ft at 9 seconds, becoming E 9 ft at 7 seconds and SE 9 ft at 10 seconds. Patchy fog in the morning. Showers likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 35 to 40 kt with gusts up to 50 kt. Seas 13 to 18 ft, building to 15 to 19 ft after midnight. Wave Detail: SE 12 ft at 12 seconds and NE 10 ft at 7 seconds, becoming SE 16 ft at 12 seconds and NE 9 ft at 7 seconds. Showers likely in the evening, then showers after midnight. Vsby 1 to 3 NM. .MON...NE winds 35 to 40 kt with gusts up to 50 kt. Seas 15 to 19 ft, subsiding to 13 to 18 ft in the afternoon. Wave Detail: E 17 ft at 12 seconds and NE 4 ft at 6 seconds, becoming SE 17 ft at 12 seconds and NE 4 ft at 6 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 30 to 35 kt, diminishing to 25 to 30 kt after midnight. Seas 12 to 15 ft, subsiding to 10 to 13 ft after midnight. Showers. Vsby 1 to 3 NM. .TUE...NE winds 25 to 30 kt. Seas 8 to 11 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 25 to 30 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .WED...N winds 20 to 25 kt. Seas 5 to 7 ft. A chance of showers. .WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of showers. 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. $$ ANZ232-111200- Nantucket Sound- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 5 seconds. .SAT...SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 10 seconds, becoming SE 2 ft at 3 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 3 ft at 4 seconds and SE 1 foot at 10 seconds. .SUN...E winds 20 to 25 kt with gusts up to 30 kt, increasing to 25 to 30 kt with gusts up to 40 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: E 5 ft at 5 seconds and SE 4 ft at 10 seconds. A chance of showers in the afternoon. .SUN NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: SE 8 ft at 12 seconds and E 7 ft at 6 seconds. Showers likely in the evening, then showers after midnight. Vsby 1 to 3 NM. .MON...E winds 30 to 35 kt with gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: E 9 ft at 11 seconds and E 7 ft at 6 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...E winds 30 to 35 kt, becoming NE 25 to 30 kt after midnight. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight. Showers. Vsby 1 to 3 NM. .TUE...NE winds 25 to 30 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...NE winds 20 to 25 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-111200- Vineyard Sound- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 5 seconds. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 9 seconds, becoming S 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt, becoming NE 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 8 seconds. .SUN...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: SE 6 ft at 10 seconds and NE 4 ft at 4 seconds. A chance of showers in the afternoon. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: E 10 ft at 11 seconds and SE 6 ft at 13 seconds. Showers likely in the evening, then showers after midnight. Vsby 1 to 3 NM. .MON...NE winds around 30 kt with gusts up to 40 kt. Seas 7 to 10 ft. Wave Detail: SE 10 ft at 12 seconds and NE 5 ft at 5 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 8 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .WED AND WED NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 2 to 4 ft. A chance of showers. 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. $$ ANZ234-111200- Buzzards Bay- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 9 seconds, becoming S 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt, becoming NE 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 8 seconds. .SUN...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Gusts up to 40 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 10 seconds and NE 4 ft at 4 seconds. A chance of showers in the afternoon. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 12 seconds and NE 5 ft at 5 seconds. Showers likely in the evening, then showers after midnight. Vsby 1 to 3 NM. .MON...NE winds around 30 kt with gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 12 seconds and NE 5 ft at 5 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt. Gusts up to 40 kt in the evening. Seas 4 to 6 ft. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 4 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM. .WED AND WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-111200- Rhode Island Sound- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. .SAT...SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 8 seconds. .SAT NIGHT...E winds 10 to 15 kt, becoming NE 20 to 25 kt after midnight. Seas 3 to 5 ft. Wave Detail: E 4 ft at 5 seconds and SE 4 ft at 8 seconds. .SUN...NE winds 25 to 30 kt. Gusts up to 45 kt in the afternoon. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. Wave Detail: SE 7 ft at 8 seconds and E 4 ft at 5 seconds, becoming SE 9 ft at 9 seconds and NE 5 ft at 5 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 9 to 12 ft, building to 10 to 14 ft after midnight. Wave Detail: SE 11 ft at 12 seconds and NE 6 ft at 6 seconds, becoming SE 12 ft at 12 seconds and NE 6 ft at 6 seconds. Showers. Vsby 1 to 3 NM. .MON...NE winds 30 to 35 kt, diminishing to 25 to 30 kt in the afternoon. Gusts up to 45 kt. Seas 10 to 14 ft. Wave Detail: SE 12 ft at 12 seconds and NE 7 ft at 6 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 11 ft. Showers. Vsby 1 to 3 NM. .TUE AND TUE NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Showers likely. Vsby 1 to 3 NM. .WED AND WED NIGHT...N winds 15 to 20 kt. Seas 3 to 5 ft. A chance of showers. 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. $$ ANZ237-111200- Block Island Sound- 704 PM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SAT...SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 15 to 20 kt, becoming NE 20 to 25 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 4 ft at 8 seconds and E 2 ft at 4 seconds, becoming E 5 ft at 5 seconds and SE 4 ft at 8 seconds. .SUN...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. Wave Detail: E 6 ft at 7 seconds and SE 1 foot at 15 seconds, becoming SE 9 ft at 9 seconds and E 5 ft at 6 seconds. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 9 to 13 ft, building to 11 to 15 ft after midnight. Wave Detail: SE 11 ft at 12 seconds and NE 6 ft at 6 seconds, becoming SE 12 ft at 12 seconds and NE 6 ft at 6 seconds. Showers. Vsby 1 to 3 NM. .MON...NE winds 30 to 35 kt, diminishing to 25 to 30 kt in the afternoon. Gusts up to 45 kt. Seas 11 to 15 ft. Wave Detail: SE 13 ft at 12 seconds and NE 5 ft at 6 seconds. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to 13 ft, subsiding to 8 to 11 ft after midnight. Showers. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt. Seas 5 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .WED AND WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-111200- Boston Harbor- 704 PM EDT Fri Oct 10 2025 ...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft this evening, then 1 foot or less. .SAT...S winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after midnight. Waves 1 foot or less, then around 2 ft after midnight. .SUN...E winds 15 to 20 kt with gusts up to 25 kt, becoming NE 20 to 25 kt with gusts up to 35 kt in the afternoon. Waves 2 to 3 ft. A chance of showers in the afternoon with vsby 1 to 3 NM. .SUN NIGHT AND MON...NE winds 20 to 25 kt with gusts up to 40 kt. Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt, diminishing to 15 to 20 kt with gusts up to 25 kt after midnight. Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. Showers likely. Vsby 1 to 3 NM. .TUE...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT THROUGH WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. A chance of showers. 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. $$ ANZ236-111200- Narragansett Bay- 704 PM EDT Fri Oct 10 2025 ...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .SAT...SE winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. .SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Waves 2 to 3 ft. .SUN...NE winds 15 to 20 kt with gusts up to 30 kt, increasing to 20 to 25 kt with gusts up to 40 kt in the afternoon. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. A chance of showers in the afternoon. .SUN NIGHT...NE winds 20 to 25 kt with gusts up to 40 kt. Waves around 3 ft, except 5 to 8 ft at the bay entrance. Showers. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 20 to 25 kt with gusts up to 40 kt. Waves 2 to 3 ft, except 5 to 7 ft at the bay entrance. Showers. Vsby 1 to 3 NM. .TUE...N winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. Showers likely. Vsby 1 to 3 NM. .TUE NIGHT THROUGH WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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