


Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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879 FZUS51 KBOX 091105 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 704 AM EDT Thu Oct 9 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-100000- 704 AM EDT Thu Oct 9 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres arrives from the NW today, then moves over the N Atlc this weekend. A coastal low pres may approach the srn New England waters late this weekend into early next week. $$ ANZ250-100000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 6 seconds and SE 2 ft at 8 seconds. .TONIGHT...N winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and SE 2 ft at 8 seconds. .FRI...N winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and NE 2 ft at 5 seconds. .SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 4 seconds. .SAT NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 10 seconds and S 1 foot at 3 seconds. .SUN...E winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...NE winds 25 to 35 kt with gusts up to 45 kt. Seas 8 to 11 ft. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 25 to 35 kt with gusts up to 45 kt. Seas 12 to 16 ft. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 10 to 14 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-100000- Massachusetts Bay and Ipswich Bay- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 5 seconds and SE 1 foot at 8 seconds. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds and SE 1 foot at 8 seconds. .FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...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 E 1 foot at 6 seconds. .SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 4 seconds, becoming S 1 foot at 3 seconds and E 1 foot at 10 seconds. .SAT NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 10 seconds, becoming W 1 foot at 2 seconds and SE 1 foot at 2 seconds. .SUN...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 8 ft. Showers likely. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 8 to 11 ft. Showers likely. 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. $$ ANZ231-100000- Cape Cod Bay- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 8 seconds. .TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 4 ft at 6 seconds and SE 2 ft at 8 seconds. .FRI...N winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 2 ft at 5 seconds and SW 1 foot at 3 seconds, becoming SW 1 foot at 2 seconds and NE 1 foot at 5 seconds. .SAT...SW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 5 seconds. .SAT NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 2 seconds, becoming NW 1 foot at 2 seconds and E 1 foot at 2 seconds. .SUN...E winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...NE winds 25 to 35 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 25 to 35 kt with gusts up to 45 kt. Seas 5 to 7 ft. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-100000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 7 seconds and SE 3 ft at 8 seconds. .TONIGHT...N winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 6 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: N 5 ft at 7 seconds and SE 2 ft at 8 seconds, becoming N 4 ft at 6 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...SW 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...SW winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: NE 1 foot at 4 seconds and S 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: E 2 ft at 3 seconds and SE 2 ft at 10 seconds. .SUN...E winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 7 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 30 to 40 kt. Seas 9 to 13 ft. Showers likely. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt. Seas 12 to 16 ft. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to 13 ft. Showers likely. 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. $$ ANZ255-100000- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 4 ft at 6 seconds and SE 3 ft at 7 seconds. .TONIGHT...N winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and NW 1 foot at 3 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and SW 1 foot at 2 seconds. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 5 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 10 seconds, becoming E 3 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers after midnight. .SUN...E winds 25 to 35 kt with gusts up to 40 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 35 to 45 kt. Seas 10 to 14 ft. Showers likely. Vsby 1 to 3 NM. .MON...E winds 35 to 45 kt. Seas 12 to 16 ft. Showers with a chance of tstms. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 35 kt with gusts up to 40 kt. Seas 9 to 13 ft. Showers likely with a chance of tstms. Vsby 1 to 3 NM. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-100000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 5 seconds and SE 3 ft at 7 seconds. .TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 5 seconds. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 10 seconds and S 1 foot at 3 seconds. .SAT NIGHT...E winds 10 to 15 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 3 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 3 seconds, becoming E 4 ft at 4 seconds and SE 3 ft at 9 seconds. A chance of showers after midnight. .SUN...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 8 to 11 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 40 to 45 kt with gusts up to 50 kt. Seas 12 to 17 ft. Showers. Vsby 1 to 3 NM. .MON...NE winds 35 to 45 kt. Seas 15 to 19 ft. Showers. Vsby 1 to 3 NM. .MON NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 12 to 16 ft. Showers likely. 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. $$ ANZ232-100000- Nantucket Sound- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 7 seconds. .TONIGHT...N winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and SE 1 foot at 7 seconds. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 6 seconds. .SAT...SW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 6 seconds. .SAT NIGHT...SE winds around 10 kt, becoming E 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SW 1 foot at 3 seconds. A chance of showers after midnight. .SUN...E winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 35 to 45 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .MON...E winds 30 to 40 kt with gusts up to 45 kt. Seas 7 to 10 ft. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 35 kt with gusts up to 40 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-100000- Vineyard Sound- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Wave Detail: N 2 ft at 4 seconds and S 2 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 7 seconds. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...SW 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...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 5 seconds. .SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 40 kt. Seas 6 to 9 ft. Showers likely. Vsby 1 to 3 NM. .MON AND MON NIGHT...NE winds 30 to 35 kt, diminishing to 25 to 30 kt. Seas 6 to 9 ft. Showers likely. 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. $$ ANZ234-100000- Buzzards Bay- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Wave Detail: N 2 ft at 4 seconds and SW 1 foot at 7 seconds. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft in the evening, then 1 foot or less. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 6 seconds, becoming N 1 foot at 3 seconds and SE 1 foot at 7 seconds. .FRI...N winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 7 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. .SAT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 4 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: S 1 foot at 3 seconds and S 1 foot at 7 seconds, becoming SE 2 ft at 8 seconds and E 1 foot at 2 seconds. A chance of showers after midnight. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 35 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 5 to 7 ft. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-100000- Rhode Island Sound- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds, becoming NW 1 foot at 3 seconds and E 1 foot at 3 seconds. .FRI NIGHT...SW 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 5 seconds, becoming S 2 ft at 5 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...E winds around 10 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: E 3 ft at 4 seconds and SE 3 ft at 9 seconds. A chance of showers after midnight. .SUN...NE winds 30 to 35 kt with gusts up to 40 kt. Seas 5 to 7 ft. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 9 to 12 ft. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 10 to 14 ft. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 35 kt with gusts up to 40 kt. Seas 8 to 11 ft. Showers likely. 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. $$ ANZ237-100000- Block Island Sound- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... .TODAY...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and S 2 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt, becoming NE 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 8 seconds. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 3 seconds. .SAT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 8 seconds. .SAT NIGHT...E winds around 10 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and SE 2 ft at 3 seconds. A chance of showers after midnight. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 7 ft. Showers likely. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 9 to 13 ft. Showers likely. Vsby 1 to 3 NM. .MON...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 11 to 15 ft. Showers likely. Vsby 1 to 3 NM. .MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to 13 ft. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-100000- Boston Harbor- 704 AM EDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... .TODAY...N winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft in the evening, then 1 foot or less. .FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Waves 1 foot or less. .FRI NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves 1 foot or less. .SAT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt, becoming E after midnight. Waves 1 foot or less. .SUN...NE winds 20 to 25 kt with gusts up to 30 kt. Waves 2 to 3 ft. A chance of showers. .SUN NIGHT THROUGH MON NIGHT...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. Showers likely. 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. $$ ANZ236-100000- Narragansett Bay- 704 AM EDT Thu Oct 9 2025 .TODAY...N winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .TONIGHT...N winds 5 to 10 kt. Waves around 2 ft. .FRI...NE winds 5 to 10 kt, becoming S in the afternoon. Waves 1 foot or less. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT...SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Waves 1 foot or less. .SAT NIGHT...SE winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Waves around 2 ft. A chance of showers after midnight. .SUN...NE winds 20 to 25 kt with gusts up to 35 kt. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Waves around 3 ft, except 5 to 8 ft at the bay entrance. Showers likely. Vsby 1 to 3 NM. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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