Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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853 FZUS51 KBOX 011205 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 705 AM EST Mon Dec 1 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-020100- 705 AM EST Mon Dec 1 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres moves across the waters Mon evening then offshore late Mon night. A coastal low will track NE from the mid Atlc coast Tue and develop into a Gale center as it passes south and east of Nantucket Tue night. High pres will move from the Ohio Valley to the mid Atlc coast Wed into Wed night. An arctic front will push across New Eng and the waters Thu into Thu evening. High pres builds over the waters Fri. $$ ANZ250-020100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... .TODAY...W winds 20 to 25 kt, becoming NW 15 to 20 kt this afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and S 2 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt, becoming E 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at 7 seconds. .TUE...S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and NW 1 foot at 3 seconds. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...NE winds 25 to 30 kt, becoming N after midnight. Seas 3 to 5 ft, building to 5 to 8 ft after midnight. Wave Detail: E 5 ft at 6 seconds and SE 1 foot at 9 seconds, becoming N 8 ft at 7 seconds and SE 4 ft at 8 seconds. Patchy fog. Rain. Vsby 1 NM or less. .WED...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to 9 ft. Wave Detail: N 7 ft at 7 seconds and SE 5 ft at 10 seconds. .WED NIGHT...W winds 10 to 15 kt, becoming SW 15 to 20 kt with gusts up to 25 kt after midnight. Seas 4 to 6 ft. Wave Detail: NE 5 ft at 8 seconds and SE 4 ft at 10 seconds. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. .THU NIGHT...NW winds 25 to 30 kt. Seas 5 to 8 ft. .FRI...W winds 15 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-020100- Massachusetts Bay and Ipswich Bay- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... .TODAY...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and S 1 foot at 5 seconds. .TONIGHT...NW winds 10 to 15 kt, becoming E around 5 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 7 seconds. .TUE...S winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 6 seconds, becoming E 2 ft at 4 seconds and NW 1 foot at 2 seconds. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...NE winds 25 to 30 kt, becoming N after midnight. Seas 3 to 5 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at 5 seconds. Patchy fog. Rain in the evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NW winds 20 to 25 kt, diminishing to 5 to 10 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: N 6 ft at 6 seconds and SE 3 ft at 9 seconds. .WED NIGHT...W winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 8 seconds and SW 2 ft at 4 seconds. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. .THU NIGHT...NW winds 25 to 30 kt. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .FRI NIGHT...SW 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. $$ ANZ231-020100- Cape Cod Bay- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... .TODAY...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and S 2 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt, becoming E around 5 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and S 1 foot at 7 seconds. .TUE...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Wave Detail: SE 1 foot at 5 seconds and N 1 foot at 5 seconds, becoming NE 2 ft at 5 seconds and SE 1 foot at 3 seconds. Patchy fog in the afternoon. Rain in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...NE winds 25 to 30 kt, becoming N after midnight. Seas 4 to 6 ft. Wave Detail: N 6 ft at 5 seconds and S 3 ft at 9 seconds. Patchy fog. Rain. Vsby 1 NM or less. .WED...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 3 ft at 10 seconds. Widespread dense fog in the morning. .WED NIGHT...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 7 seconds and SW 2 ft at 4 seconds. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. .THU NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-020100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... .TODAY...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and S 4 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 6 seconds and S 2 ft at 7 seconds. .TUE...SE winds 5 to 10 kt, increasing to 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 4 seconds and N 2 ft at 6 seconds. Patchy fog in the afternoon. Rain in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...E winds 25 to 30 kt, becoming N after midnight. Seas 4 to 6 ft, building to 7 to 10 ft after midnight. Wave Detail: N 6 ft at 6 seconds and SE 5 ft at 6 seconds, becoming N 7 ft at 7 seconds and S 7 ft at 10 seconds. Patchy fog. Rain. Vsby 1 NM or less. .WED...NW winds 25 to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 8 to 11 ft, subsiding to 6 to 9 ft in the afternoon. Wave Detail: N 7 ft at 7 seconds and S 7 ft at 10 seconds, becoming NE 7 ft at 8 seconds and S 6 ft at 10 seconds. Widespread dense fog in the morning. .WED NIGHT...W winds 5 to 10 kt, becoming SW 15 to 20 kt after midnight. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 8 seconds and SE 4 ft at 9 seconds. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 25 to 30 kt. Seas 6 to 9 ft, except 9 to 13 ft S and E of Nantucket. .FRI...W winds 15 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...SW winds around 10 kt. Seas 2 to 4 ft. A chance of rain. 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. $$ ANZ255-020100- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... .TODAY...NW winds 20 to 25 kt, diminishing to 15 to 20 kt this afternoon. Seas 5 to 7 ft. Wave Detail: W 7 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt, becoming E 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and S 2 ft at 7 seconds. .TUE...SE winds 10 to 15 kt, increasing to 20 to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 4 seconds and W 1 foot at 5 seconds. Patchy fog in the afternoon. Rain in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...NE winds 30 to 40 kt, becoming NW after midnight. Seas 5 to 7 ft, building to 7 to 10 ft after midnight. Wave Detail: SE 7 ft at 7 seconds, becoming N 8 ft at 6 seconds and S 8 ft at 10 seconds. Patchy fog. Rain. Vsby 1 NM or less. .WED...NW winds 25 to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 7 to 10 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: S 8 ft at 10 seconds and W 7 ft at 7 seconds, becoming S 6 ft at 10 seconds and W 4 ft at 7 seconds. Widespread dense fog in the morning. .WED NIGHT...W winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 4 to 6 ft. Wave Detail: S 5 ft at 9 seconds and SW 4 ft at 5 seconds. .THU...W winds 25 to 30 kt. Seas 6 to 9 ft. .THU NIGHT...NW winds 25 to 35 kt with gusts up to 40 kt. Seas 8 to 11 ft. .FRI...NW winds 15 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-020100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... .TODAY...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 15 to 20 kt this afternoon. Seas 5 to 7 ft. Wave Detail: W 6 ft at 6 seconds. .TONIGHT...N winds 10 to 15 kt, becoming SE 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and N 2 ft at 4 seconds. .TUE...SE winds 10 to 15 kt, increasing to 20 to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 4 seconds and W 1 foot at 3 seconds. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...N winds 25 to 35 kt with gusts up to 40 kt. Seas 4 to 6 ft, building to 7 to 10 ft after midnight. Wave Detail: SE 6 ft at 9 seconds and N 5 ft at 5 seconds, becoming S 8 ft at 10 seconds and N 7 ft at 6 seconds. Patchy fog. Rain, mainly in the evening. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 10 to 15 kt in the afternoon. Seas 7 to 10 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: S 8 ft at 10 seconds and N 6 ft at 6 seconds, becoming S 6 ft at 10 seconds and N 3 ft at 5 seconds. .WED NIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 5 seconds and S 5 ft at 9 seconds. .THU...W winds 25 to 30 kt. Seas 6 to 9 ft. .THU NIGHT...NW winds 30 to 35 kt with gusts up to 40 kt. Seas 7 to 10 ft. .FRI...W winds 15 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of rain. 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. $$ ANZ232-020100- Nantucket Sound- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... .TODAY...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SW 2 ft at 7 seconds. .TONIGHT...N winds 10 to 15 kt, becoming E 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 7 seconds, becoming N 1 foot at 3 seconds and S 1 foot at 6 seconds. .TUE...SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and NW 1 foot at 5 seconds. Patchy fog in the afternoon. Rain in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...NE winds 25 to 35 kt, becoming N after midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: NE 4 ft at 5 seconds and SE 3 ft at 6 seconds, becoming N 5 ft at 6 seconds and S 2 ft at 10 seconds. Patchy fog. Rain in the evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 4 seconds and NE 3 ft at 7 seconds. Widespread dense fog in the morning. .WED NIGHT...W winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and NE 3 ft at 7 seconds. .THU AND THU NIGHT...W winds 20 to 25 kt, becoming NW 25 to 30 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-020100- Vineyard Sound- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... .TODAY...NW winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 6 seconds. .TONIGHT...N winds 5 to 10 kt, becoming E after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 2 ft at 7 seconds and N 1 foot at 4 seconds, becoming NE 1 foot at 3 seconds and W 1 foot at 5 seconds. .TUE...SE winds around 10 kt, becoming E 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and W 1 foot at 4 seconds. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...NE winds 25 to 30 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 6 seconds. Patchy fog. Rain in the evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NW winds 20 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: S 4 ft at 10 seconds and N 3 ft at 5 seconds, becoming S 3 ft at 10 seconds and N 2 ft at 5 seconds. .WED NIGHT...W winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and NE 2 ft at 7 seconds. .THU AND THU NIGHT...W winds 20 to 25 kt, becoming NW 25 to 30 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of rain. 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. $$ ANZ234-020100- Buzzards Bay- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... .TODAY...NW winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and NW 2 ft at 4 seconds. .TONIGHT...N winds 5 to 10 kt, becoming E after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SW 2 ft at 7 seconds and N 1 foot at 4 seconds, becoming N 1 foot at 4 seconds and SW 1 foot at 6 seconds. .TUE...SE winds 5 to 10 kt, becoming E 15 to 20 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 4 seconds, becoming SE 2 ft at 4 seconds and NW 1 foot at 4 seconds. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...N winds 25 to 30 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 4 seconds and S 3 ft at 10 seconds. Patchy fog. Rain in the evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 3 ft at 10 seconds. .WED NIGHT...W winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and NE 2 ft at 6 seconds. .THU AND THU NIGHT...W winds 20 to 25 kt, becoming NW. Seas 3 to 5 ft. .FRI...W winds 10 to 15 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-020100- Rhode Island Sound- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... .TODAY...NW winds 20 to 25 kt, diminishing to 15 to 20 kt this afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds. .TONIGHT...N winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and SW 2 ft at 7 seconds. .TUE...SE winds around 10 kt, becoming E 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and W 1 foot at 3 seconds. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 NM or less. .TUE NIGHT...N winds 25 to 30 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 10 seconds and N 5 ft at 5 seconds. Patchy fog. Rain in the evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NW winds 20 to 25 kt, diminishing to 5 to 10 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: S 7 ft at 10 seconds and N 4 ft at 5 seconds. .WED NIGHT...W winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 5 seconds and S 4 ft at 9 seconds. .THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. .THU NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. A chance of rain. 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. $$ ANZ237-020100- Block Island Sound- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... .TODAY...NW winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 3 ft at 4 seconds. .TONIGHT...N winds 5 to 10 kt, becoming E after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 7 seconds, becoming NE 1 foot at 2 seconds and W 1 foot at 3 seconds. .TUE...SE winds 5 to 10 kt, becoming E 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and SE 1 foot at 9 seconds. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...N winds 25 to 30 kt, becoming NW 20 to 25 kt after midnight. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: N 3 ft at 4 seconds and SE 3 ft at 5 seconds, becoming S 6 ft at 10 seconds and N 4 ft at 5 seconds. Patchy fog. Rain, mainly in the evening. Vsby 1 to 3 NM. .WED...NW winds 15 to 20 kt with gusts up to 25 kt, diminishing to 5 to 10 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: S 7 ft at 10 seconds and N 3 ft at 5 seconds. .WED NIGHT...W winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 4 ft at 9 seconds and SW 3 ft at 5 seconds. .THU AND THU NIGHT...W winds 20 to 25 kt, becoming NW. Gusts up to 30 kt. Seas 4 to 6 ft. .FRI...W winds 10 to 15 kt. Seas 2 to 4 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of rain. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-020100- Boston Harbor- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... .TODAY...W winds 15 to 20 kt, becoming NW 10 to 15 kt this afternoon. Gusts up to 25 kt. Waves around 2 ft. .TONIGHT...N winds 5 to 10 kt, diminishing to around 5 kt after midnight. Waves 1 foot or less. .TUE...S winds around 5 kt, becoming E 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM. .TUE NIGHT...NE winds 20 to 25 kt, becoming NW after midnight. Gusts up to 30 kt. Waves 2 to 3 ft. Patchy fog. Rain. Vsby 1 NM or less. .WED...NW winds 15 to 20 kt, diminishing to 5 to 10 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. At the outer harbor entrance, waves 2 to 4 ft. .WED NIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Waves 1 foot or less, then around 2 ft after midnight. .THU THROUGH FRI...W winds 20 to 25 kt. Waves around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of snow. 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. $$ ANZ236-020100- Narragansett Bay- 705 AM EST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... .TODAY...NW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .TONIGHT...N winds 5 to 10 kt, becoming E after midnight. Waves around 2 ft in the evening, then 1 foot or less. .TUE...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 foot or less, then 2 to 3 ft in the afternoon. A chance of rain in the morning, then rain in the afternoon. Patchy fog in the afternoon with vsby 1 NM or less. .TUE NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Waves 2 to 3 ft. Patchy fog. Rain in the evening. A chance of rain after midnight. Vsby 1 NM or less. .WED...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Waves 2 to 3 ft. .WED NIGHT...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt after midnight. Waves 2 to 3 ft. .THU AND THU NIGHT...W winds 15 to 20 kt, becoming NW. Gusts up to 25 kt. Waves 2 to 4 ft. .FRI...W winds 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of rain and snow. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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