Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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818 FZUS51 KBOX 111505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1005 AM EST Thu Dec 11 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-120400- 1005 AM EST Thu Dec 11 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... An extended period of gale force W wind gusts are on tap today into Fri. Weak high pres builds south of the waters Fri night into Sat allowing winds to diminish. A weak wave of low pres will probably track south of our waters Sat night into Sun morning. This will be followed by the passage of an arctic cold front late Sun into Mon with another round of gale force wind gusts. High pres then builds south of the waters Tue. $$ ANZ250-120400- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY EVENING... .THIS AFTERNOON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 3 to 5 ft, building to 5 to 7 ft. Wave Detail: W 4 ft at 5 seconds and SE 2 ft at 8 seconds, becoming W 5 ft at 6 seconds and SE 1 foot at 8 seconds. .TONIGHT...W winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 8 ft. Wave Detail: W 6 ft at 6 seconds and SE 1 foot at 10 seconds. .FRI...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: W 6 ft at 6 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 35 kt. Seas 4 to 6 ft, subsiding to 2 to 4 ft after midnight. Wave Detail: W 5 ft at 5 seconds and SE 1 foot at 10 seconds, becoming W 4 ft at 5 seconds. .SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 10 seconds. A chance of snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Snow likely. Vsby 1 to 3 NM. .SUN NIGHT...NW winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. A chance of snow showers. Vsby 1 to 3 NM. .MON...NW winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-120400- Massachusetts Bay and Ipswich Bay- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at 8 seconds. .TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 45 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and SE 1 foot at 8 seconds. .FRI...W winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds. .SAT...SW winds around 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 11 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 11 seconds. A chance of snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Snow likely. Vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 5 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. $$ ANZ231-120400- Cape Cod Bay- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 40 kt. Seas around 3 ft, building to 4 to 6 ft. Wave Detail: W 3 ft at 4 seconds and SW 3 ft at 7 seconds, becoming W 4 ft at 4 seconds and SW 3 ft at 7 seconds. .TONIGHT...W winds 20 to 25 kt with gusts up to 45 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: W 5 ft at 6 seconds and SE 1 foot at 9 seconds, becoming W 4 ft at 6 seconds and SE 1 foot at 9 seconds. .FRI...W winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 15 to 20 kt with gusts up to 35 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds. .SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and E 1 foot at 9 seconds. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds. A chance of snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. Snow likely with a chance of rain. Vsby 1 to 3 NM. .SUN NIGHT...NW winds 25 to 35 kt with gusts up to 40 kt. Seas 4 to 6 ft. A chance of snow showers. Vsby 1 to 3 NM. .MON...NW winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. .MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-120400- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY EVENING... .THIS AFTERNOON...W winds 20 to 25 kt, increasing to 25 to 30 kt. Gusts up to 40 kt. Seas 5 to 7 ft, except 8 to 11 ft S and E of Nantucket. Wave Detail: SW 5 ft at 7 seconds. .TONIGHT...W winds 25 to 30 kt with gusts up to 45 kt. Seas 6 to 9 ft. Wave Detail: W 6 ft at 6 seconds and S 3 ft at 10 seconds. .FRI...W winds 25 to 30 kt with gusts up to 45 kt, diminishing to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 6 to 9 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: W 6 ft at 6 seconds and S 1 foot at 10 seconds, becoming W 5 ft at 6 seconds and S 1 foot at 9 seconds. .FRI NIGHT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 5 ft at 6 seconds and SE 1 foot at 9 seconds. .SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 10 seconds. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 2 ft at 6 seconds and SE 1 foot at 9 seconds. A chance of rain and snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain and snow likely. Vsby 1 to 3 NM. .SUN NIGHT...NW winds 25 to 35 kt with gusts up to 45 kt. Seas 5 to 7 ft. A chance of snow showers. Vsby 1 NM or less. .MON...NW winds 25 to 35 kt with gusts up to 45 kt. Seas 5 to 8 ft. .MON NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 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. $$ ANZ255-120400- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY EVENING... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: SW 10 ft at 9 seconds and W 2 ft at 5 seconds. .TONIGHT...W winds 25 to 30 kt with gusts up to 45 kt. Seas 9 to 12 ft. Wave Detail: W 12 ft at 8 seconds and W 3 ft at 5 seconds. .FRI...W winds 25 to 30 kt with gusts up to 45 kt, diminishing to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 7 to 10 ft, subsiding to 5 to 8 ft in the afternoon. Wave Detail: W 10 ft at 8 seconds and W 3 ft at 5 seconds, becoming W 7 ft at 8 seconds and W 2 ft at 5 seconds. .FRI NIGHT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 6 ft at 7 seconds and NW 1 foot at 4 seconds. .SAT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of rain after midnight. .SUN...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain with snow likely. Vsby 1 NM or less. .SUN NIGHT...NW winds 35 to 45 kt. Seas 6 to 9 ft. A chance of snow showers. Vsby 1 NM or less. .MON AND MON NIGHT...NW winds 30 to 40 kt with gusts up to 45 kt, diminishing to 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-120400- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY EVENING... .THIS AFTERNOON...W winds 25 to 30 kt with gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: SW 9 ft at 9 seconds and NW 4 ft at 5 seconds. .TONIGHT...W winds 25 to 30 kt with gusts up to 45 kt. Seas 8 to 11 ft. Wave Detail: W 10 ft at 7 seconds and SE 1 foot at 8 seconds. .FRI...W winds 20 to 25 kt. Gusts up to 45 kt, decreasing to 35 kt in the afternoon. Seas 7 to 10 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: W 9 ft at 8 seconds and NW 4 ft at 5 seconds, becoming W 7 ft at 6 seconds. .FRI NIGHT...W winds 15 to 20 kt with gusts up to 35 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 4 to 6 ft, subsiding to 2 to 4 ft after midnight. Wave Detail: SW 5 ft at 7 seconds and NW 2 ft at 4 seconds, becoming W 3 ft at 5 seconds. .SAT...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of rain and snow after midnight. .SUN...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain and snow likely. Vsby 1 NM or less. .SUN NIGHT AND MON...NW winds 30 to 40 kt, diminishing to 25 to 35 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 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. $$ ANZ232-120400- Nantucket Sound- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 6 ft. Wave Detail: W 4 ft at 4 seconds and SW 4 ft at 8 seconds. .TONIGHT...W winds 20 to 25 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: W 5 ft at 6 seconds and S 1 foot at 10 seconds. .FRI...W winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft in the afternoon. Wave Detail: W 5 ft at 5 seconds and SW 4 ft at 8 seconds, becoming W 3 ft at 4 seconds and SW 3 ft at 8 seconds. .FRI NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SW 2 ft at 7 seconds. .SAT...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and W 1 foot at 3 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of rain and snow after midnight. .SUN...NW winds 20 to 25 kt. Seas 2 to 4 ft. Snow likely with a chance of rain. Vsby 1 NM or less. .SUN NIGHT...NW winds 25 to 35 kt with gusts up to 40 kt. Seas 3 to 5 ft. Light freezing spray. A chance of snow showers. Vsby 1 to 3 NM. .MON...NW winds 25 to 35 kt with gusts up to 40 kt. Seas 3 to 5 ft. Light freezing spray. .MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-120400- Vineyard Sound- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 8 seconds and W 2 ft at 4 seconds. .TONIGHT...W winds 20 to 25 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 8 seconds and W 3 ft at 5 seconds. .FRI...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 40 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and S 1 foot at 9 seconds. .FRI NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds. .SAT...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and NW 1 foot at 3 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of rain and snow after midnight. .SUN...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 3 ft. Snow likely with a chance of rain. Vsby 1 to 3 NM. .SUN NIGHT...NW winds 25 to 35 kt with gusts up to 40 kt. Seas 3 to 4 ft. Light freezing spray. .MON...NW winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 4 ft. Light freezing spray. .MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Light freezing spray. 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. $$ ANZ234-120400- Buzzards Bay- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds around 20 kt with gusts up to 40 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 8 seconds and W 3 ft at 5 seconds. .TONIGHT...W winds 20 to 25 kt with gusts up to 45 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds and SE 1 foot at 9 seconds. Light freezing spray after midnight. .FRI...W winds 15 to 20 kt with gusts up to 40 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds and S 1 foot at 10 seconds. Light freezing spray in the morning. .FRI NIGHT...W winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds. .SAT...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and W 1 foot at 3 seconds. .SAT NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Snow likely with a chance of rain. Vsby 1 to 3 NM. .SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas around 3 ft. Light freezing spray. .MON...NW winds 25 to 30 kt with gusts up to 35 kt. Seas around 3 ft. Light freezing spray. .MON NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas around 3 ft. Light freezing spray. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-120400- Rhode Island Sound- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 9 seconds and W 4 ft at 5 seconds. .TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 45 kt. Seas 5 to 8 ft. Wave Detail: W 7 ft at 7 seconds and SE 2 ft at 8 seconds. .FRI...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 40 kt. Seas 5 to 7 ft, subsiding to 3 to 5 ft in the afternoon. Wave Detail: SW 6 ft at 8 seconds and W 4 ft at 5 seconds, becoming W 5 ft at 6 seconds and S 1 foot at 9 seconds. .FRI NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SW 4 ft at 7 seconds and W 2 ft at 4 seconds, becoming W 3 ft at 5 seconds. .SAT...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and W 2 ft at 3 seconds. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of rain and snow after midnight. .SUN...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. Snow likely with a chance of rain. Vsby 1 NM or less. .SUN NIGHT THROUGH MON NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 5 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. $$ ANZ237-120400- Block Island Sound- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and SW 4 ft at 9 seconds. .TONIGHT...W winds 20 to 25 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: W 5 ft at 6 seconds and S 2 ft at 9 seconds. .FRI...W winds 20 to 25 kt with gusts up to 40 kt, diminishing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: W 4 ft at 5 seconds and SW 4 ft at 8 seconds. .FRI NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SW 2 ft at 7 seconds. .SAT...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SW 2 ft at 6 seconds. .SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of rain and snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. Snow likely with a chance of rain. Vsby 1 NM or less. .SUN NIGHT THROUGH MON NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-120400- Boston Harbor- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 20 to 25 kt with gusts up to 40 kt. Waves around 2 ft. .TONIGHT...W winds 20 to 25 kt. Gusts up to 45 kt, decreasing to 35 kt after midnight. Waves around 2 ft. .FRI...W winds 15 to 20 kt with gusts up to 35 kt. Waves around 2 ft. .FRI NIGHT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 2 ft. .SAT...SW winds 5 to 10 kt. Waves around 2 ft. .SAT NIGHT...W winds around 10 kt. Waves around 2 ft. A chance of snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of snow. Vsby 1 to 3 NM. .SUN NIGHT THROUGH MON NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Waves 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. $$ ANZ236-120400- Narragansett Bay- 1005 AM EST Thu Dec 11 2025 ...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON... .THIS AFTERNOON...W winds 15 to 20 kt with gusts up to 40 kt. Waves around 3 ft. .TONIGHT...W winds 15 to 20 kt with gusts up to 40 kt. Waves around 3 ft. Light freezing spray after midnight. .FRI...W winds 10 to 15 kt with gusts up to 35 kt. Waves around 3 ft. .FRI NIGHT...W winds 10 to 15 kt with gusts up to 30 kt, diminishing to 5 to 10 kt with gusts up to 20 kt after midnight. Waves 2 to 3 ft. .SAT...W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. A chance of snow after midnight. .SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. Snow likely. Vsby 1 NM or less. .SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 35 kt. Waves around 3 ft. Light freezing spray. .MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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