


Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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873 FZUS51 KBOX 101403 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1003 AM EDT Fri Oct 10 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-110300- 1003 AM EDT Fri Oct 10 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres moved over the waters today, then over the N Atlc Sat. A coastal storm may approach the srn New England waters late this weekend into early next week, with the potential for Gale or Storm Force winds. $$ ANZ250-110300- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NW winds around 5 kt, becoming S. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and SE 1 foot at 9 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 2 seconds and NE 2 ft at 5 seconds. .SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 4 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and SW 1 foot at 3 seconds. .SUN...E winds 15 to 20 kt with gusts up to 30 kt, increasing to 20 to 25 kt with gusts up to 40 kt in the afternoon. Seas 2 to 4 ft, building to 5 to 7 ft in the afternoon. Wave Detail: E 4 ft at 5 seconds and SE 1 foot at 11 seconds, becoming E 7 ft at 6 seconds and SE 1 foot at 13 seconds. A chance of rain in the morning, then rain likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...E winds 25 to 30 kt, increasing to 30 to 35 kt after midnight. Gusts up to 45 kt. Seas 7 to 10 ft, building to 10 to 14 ft after midnight. Wave Detail: E 8 ft at 7 seconds and SE 7 ft at 12 seconds, becoming SE 13 ft at 10 seconds and E 9 ft at 7 seconds. Rain likely. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 25 to 35 kt with gusts up to 45 kt. Seas 12 to 17 ft. Rain likely. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 12 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 9 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-110300- Massachusetts Bay and Ipswich Bay- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NW winds around 5 kt, becoming S. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and SE 1 foot at 10 seconds. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and NE 2 ft at 6 seconds. .SAT...SW winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 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 SE 2 ft at 3 seconds and SE 1 foot at 11 seconds. A chance of rain after midnight. .SUN...E winds 15 to 20 kt, becoming NE 20 to 25 kt in the afternoon. Gusts up to 35 kt. Seas 2 to 3 ft, building to 3 to 5 ft in the afternoon. Wave Detail: E 3 ft at 4 seconds and SE 1 foot at 11 seconds, becoming E 5 ft at 6 seconds and SE 1 foot at 13 seconds. A chance of rain in the morning, then rain likely 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 7 seconds and SE 3 ft at 13 seconds, becoming NE 10 ft at 7 seconds and SE 7 ft at 12 seconds. Rain likely. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 9 to 13 ft. Rain likely. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Rain 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. 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. $$ ANZ231-110300- Cape Cod Bay- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming S. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 9 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT...S winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: S 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less, then 2 to 3 ft after midnight. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at 10 seconds, becoming SE 2 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of rain after midnight. .SUN...E winds 15 to 20 kt with gusts up to 30 kt, increasing to 25 to 30 kt with gusts up to 40 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: E 4 ft at 4 seconds and SE 2 ft at 11 seconds. A chance of rain in the morning, then rain likely in the afternoon with vsby 1 to 3 NM. .SUN NIGHT...NE winds 25 to 30 kt, becoming E 30 to 35 kt after midnight. Seas 5 to 7 ft. Wave Detail: E 7 ft at 5 seconds and SE 7 ft at 11 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 25 to 30 kt with gusts up to 45 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 8 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-110300- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming SE. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and SE 1 foot at 9 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...S winds 5 to 10 kt, becoming SE 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 10 seconds. A chance of rain after midnight. .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 5 to 8 ft in the afternoon. Wave Detail: E 6 ft at 6 seconds and SE 3 ft at 11 seconds, becoming E 8 ft at 6 seconds and SE 6 ft at 11 seconds. A chance of rain in the morning, then rain likely in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...E winds 25 to 35 kt, becoming 30 to 35 kt after midnight. Seas 9 to 13 ft, building to 12 to 16 ft after midnight. Wave Detail: E 9 ft at 7 seconds and SE 9 ft at 10 seconds, becoming SE 14 ft at 11 seconds and E 10 ft at 8 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 25 to 35 kt with gusts up to 40 kt. Seas 12 to 17 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...E winds 25 to 30 kt with gusts up to 35 kt. Seas 11 to 15 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 8 to 11 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. Showers likely. 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. $$ ANZ255-110300- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...E winds 5 to 10 kt, becoming SE. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and NW 1 foot at 3 seconds. .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 around 2 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 3 ft, building to 3 to 5 ft after midnight. Wave Detail: E 3 ft at 4 seconds and SE 3 ft at 10 seconds, becoming E 5 ft at 5 seconds and SE 3 ft at 10 seconds. A chance of rain after midnight. .SUN...E winds 25 to 30 kt with gusts up to 35 kt, becoming NE 30 to 35 kt with gusts up to 45 kt in the afternoon. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. Wave Detail: E 7 ft at 6 seconds and SE 5 ft at 10 seconds, becoming E 9 ft at 7 seconds and SE 8 ft at 11 seconds. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...E winds 35 to 40 kt with gusts up to 45 kt. Seas 10 to 14 ft, building to 12 to 16 ft after midnight. Wave Detail: E 11 ft at 8 seconds and SE 11 ft at 12 seconds, becoming SE 14 ft at 12 seconds and E 11 ft at 9 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 45 kt. Seas 12 to 16 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...E winds 25 to 30 kt with gusts up to 35 kt. Seas 10 to 14 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Showers likely. 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. $$ ANZ256-110300- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...E winds around 5 kt, becoming SE. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and E 1 foot at 3 seconds. .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 with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 4 seconds. .SAT NIGHT...E winds 15 to 20 kt, increasing to 25 to 30 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 4 ft at 9 seconds and E 3 ft at 4 seconds, becoming E 6 ft at 5 seconds and SE 4 ft at 13 seconds. A chance of rain. Vsby 1 to 3 NM after midnight. .SUN...E winds 25 to 35 kt, becoming NE 35 to 40 kt in the afternoon. Seas 7 to 10 ft, building to 9 to 13 ft in the afternoon. Wave Detail: E 9 ft at 7 seconds and SE 6 ft at 9 seconds, becoming E 10 ft at 7 seconds and SE 10 ft at 11 seconds. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 35 to 40 kt with gusts up to 45 kt. Seas 12 to 16 ft, building to 15 to 18 ft after midnight. Wave Detail: SE 14 ft at 12 seconds and NE 12 ft at 8 seconds, becoming SE 18 ft at 12 seconds and NE 12 ft at 8 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 50 kt. Seas 15 to 18 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 12 to 16 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 25 to 30 kt. Seas 9 to 12 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 25 to 30 kt. Seas 6 to 9 ft. Showers likely. 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. $$ ANZ232-110300- Nantucket Sound- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming SE. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 9 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 5 seconds. .SAT...S winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SE 1 foot at 4 seconds and SE 1 foot at 10 seconds, becoming SE 1 foot at 3 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of rain after midnight. .SUN...E winds 25 to 35 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 5 seconds and SE 2 ft at 11 seconds. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: E 8 ft at 7 seconds and SE 4 ft at 12 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 45 kt. Seas 7 to 10 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...E winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt. Seas 4 to 6 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-110300- Vineyard Sound- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming S. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 5 seconds. .SAT...SE winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 5 seconds, becoming S 1 foot at 3 seconds and SE 1 foot at 9 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 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of rain after midnight. .SUN...E winds 20 to 25 kt, becoming NE 25 to 30 kt in the afternoon. Gusts up to 40 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 5 seconds and SE 4 ft at 12 seconds. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 40 kt. Seas 6 to 9 ft. Wave Detail: NE 6 ft at 6 seconds and SE 5 ft at 12 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 30 to 35 kt with gusts up to 40 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt. Seas 3 to 5 ft. Showers likely. 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. $$ ANZ234-110300- Buzzards Bay- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming S. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 4 seconds, becoming S 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of rain after midnight. .SUN...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Gusts up to 40 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 4 seconds and SE 3 ft at 12 seconds. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: NE 5 ft at 5 seconds and SE 5 ft at 12 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 25 to 35 kt with gusts up to 40 kt. Seas 5 to 7 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-110300- Rhode Island Sound- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming S. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming SE 1 foot at 4 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 around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 8 seconds. .SAT NIGHT...E winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: SE 3 ft at 9 seconds and E 2 ft at 4 seconds, becoming E 5 ft at 6 seconds and SE 4 ft at 15 seconds. A chance of rain. .SUN...NE winds 25 to 35 kt. Gusts up to 45 kt in the afternoon. Seas 5 to 7 ft, building to 6 to 9 ft in the afternoon. Wave Detail: E 7 ft at 7 seconds and SE 7 ft at 14 seconds, becoming SE 9 ft at 10 seconds and NE 6 ft at 6 seconds. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 9 to 13 ft. Wave Detail: SE 13 ft at 12 seconds and NE 7 ft at 6 seconds. Rain. Vsby 1 to 3 NM. .MON...E winds 25 to 35 kt with gusts up to 45 kt. Seas 10 to 14 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to 12 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 20 to 25 kt. Seas 4 to 6 ft. Showers likely. 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. $$ ANZ237-110300- Block Island Sound- 1003 AM EDT Fri Oct 10 2025 ...STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming SE. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds, becoming SE 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SAT...SE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...E winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: SE 3 ft at 9 seconds and E 2 ft at 4 seconds, becoming E 5 ft at 6 seconds and SE 4 ft at 15 seconds. A chance of rain. Vsby 1 to 3 NM after midnight. .SUN...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft, building to 7 to 10 ft in the afternoon. Wave Detail: E 6 ft at 6 seconds and SE 5 ft at 12 seconds, becoming SE 9 ft at 9 seconds and E 6 ft at 6 seconds. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 9 to 12 ft, building to 11 to 15 ft after midnight. Wave Detail: SE 12 ft at 12 seconds and E 7 ft at 7 seconds, becoming SE 15 ft at 12 seconds and NE 7 ft at 7 seconds. Rain. Vsby 1 to 3 NM. .MON...NE winds 25 to 35 kt with gusts up to 45 kt. Seas 11 to 15 ft. Rain. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to 13 ft. Rain. Vsby 1 to 3 NM. .TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Rain likely. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-110300- Boston Harbor- 1003 AM EDT Fri Oct 10 2025 ...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NW winds around 5 kt, becoming S. Waves 1 foot or less. .TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT...SW 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. A chance of rain after midnight. .SUN AND SUN NIGHT...NE winds 25 to 30 kt. Waves 2 to 3 ft. A chance of rain in the morning, then rain. Vsby 1 to 3 NM. .MON THROUGH TUE...NE winds 25 to 30 kt with gusts up to 40 kt. Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. Rain. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 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. $$ ANZ236-110300- Narragansett Bay- 1003 AM EDT Fri Oct 10 2025 ...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds around 5 kt, becoming S. Waves 1 foot or less. .TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. .SAT...SE winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. .SAT NIGHT...E winds 5 to 10 kt, becoming NE 15 to 20 kt after midnight. Waves 2 to 3 ft. A chance of rain after midnight. .SUN...NE winds 20 to 25 kt. Gusts up to 30 kt, increasing to 40 kt in the afternoon. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. Rain likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Waves around 3 ft, except 5 to 8 ft at the bay entrance. Rain. Vsby 1 to 3 NM. .MON THROUGH TUE...N winds 25 to 30 kt with gusts up to 35 kt. Waves 2 to 3 ft, except 5 to 7 ft at the bay entrance. Rain. Vsby 1 to 3 NM. .TUE NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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