Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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544 FZUS51 KBOX 231103 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 703 AM EDT Wed Sep 23 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-240000- 703 AM EDT Wed Sep 23 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... Large high pres will remain anchored in the vicinity of Quebec right into the weekend. At the same time...a slow moving and intensifying ocean storm will retrograde towards the coast this weekend. While its exact track and timing remains uncertain...dangerous conditions are expected for mariners later this week into the weekend. NE wind gusts of 35 to 55 knots with seas potentially building 15-20+ feet by the weekend. Mariners should keep up to date with the latest forecasts and be prepared to return to port. $$ ANZ250-240000- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 703 AM EDT Wed Sep 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT... ...GALE WARNING IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY MORNING... ...STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 8 seconds and SE 1 foot at 12 seconds. .TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 8 ft. Wave Detail: E 8 ft at 9 seconds and N 1 foot at 4 seconds. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. Wave Detail: E 9 ft at 10 seconds. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt, increasing to 20 to 25 kt with gusts up to 35 kt after midnight. Seas 7 to 10 ft. Wave Detail: E 10 ft at 11 seconds and NE 6 ft at 7 seconds. .FRI...NE winds 25 to 30 kt, increasing to 30 to 35 kt in the afternoon. Gusts up to 45 kt. Seas 8 to 11 ft, building to 9 to 13 ft in the afternoon. Wave Detail: E 11 ft at 11 seconds and N 6 ft at 5 seconds, becoming E 11 ft at 11 seconds and NE 9 ft at 7 seconds. A chance of showers. .FRI NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 10 to 13 ft. Wave Detail: E 13 ft at 11 seconds and NW 11 ft at 5 seconds. A chance of showers in the evening, then showers likely after midnight. .SAT...NE winds 30 to 35 kt with gusts up to 50 kt. Seas 11 to 14 ft. Showers. .SAT NIGHT...NE winds around 30 kt with gusts up to 45 kt. Seas 11 to 13 ft. Showers with a chance of tstms. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 10 to 13 ft. Showers likely. .SUN NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to 11 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-240000- Massachusetts Bay and Ipswich Bay- 703 AM EDT Wed Sep 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT... ...GALE WARNING IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY MORNING... ...STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 7 seconds. .TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: E 6 ft at 9 seconds and N 1 foot at 4 seconds. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 10 seconds. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 10 seconds and NE 6 ft at 9 seconds. .FRI...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: NE 10 ft at 9 seconds and E 10 ft at 11 seconds. A chance of showers in the afternoon. .FRI NIGHT...NE winds 25 to 35 kt, becoming 30 to 35 kt after midnight. Gusts up to 45 kt. Seas 7 to 10 ft. Wave Detail: E 10 ft at 11 seconds and NE 9 ft at 10 seconds. A chance of showers in the evening, then showers likely after midnight. .SAT...N winds 30 to 35 kt with gusts up to 45 kt. Seas 8 to 11 ft. Showers likely. .SAT NIGHT...N winds around 30 kt with gusts up to 45 kt. Seas 8 to 11 ft. Showers likely with a chance of tstms. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 7 to 10 ft. Showers likely. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. Showers likely. 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. $$ ANZ231-240000- Cape Cod Bay- 703 AM EDT Wed Sep 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY MORNING... ...STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 4 seconds and SE 2 ft at 11 seconds. .TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 9 seconds and NE 4 ft at 4 seconds. .THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 4 seconds and E 5 ft at 10 seconds. .THU NIGHT...NE winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 4 to 6 ft. Wave Detail: E 6 ft at 11 seconds and N 5 ft at 5 seconds. .FRI...NE winds 25 to 30 kt with gusts up to 40 kt, increasing to 30 to 35 kt with gusts up to 50 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: N 7 ft at 6 seconds and E 7 ft at 12 seconds. A chance of showers. .FRI NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 6 to 9 ft. Wave Detail: N 9 ft at 6 seconds and E 9 ft at 11 seconds. Showers. .SAT AND SAT NIGHT...NE winds 30 to 35 kt with gusts up to 50 kt. Seas 6 to 9 ft. Showers with a chance of tstms. .SUN...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Showers likely. .SUN NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-240000- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 703 AM EDT Wed Sep 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY MORNING... ...STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Wave Detail: E 8 ft at 7 seconds and SE 5 ft at 10 seconds. .TONIGHT...NE winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 7 to 10 ft. Wave Detail: E 10 ft at 10 seconds and N 1 foot at 4 seconds. .THU...NE winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Seas 8 to 11 ft. Wave Detail: E 11 ft at 10 seconds and NE 6 ft at 5 seconds. .THU NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to 13 ft. Wave Detail: E 12 ft at 11 seconds and N 6 ft at 5 seconds. A chance of showers after midnight. .FRI...NE winds 25 to 35 kt, increasing to 30 to 40 kt in the afternoon. Seas 10 to 14 ft. Wave Detail: E 13 ft at 11 seconds and NE 9 ft at 8 seconds. A chance of showers in the morning, then showers likely in the afternoon. .FRI NIGHT...NE winds 35 to 40 kt with gusts up to 45 kt. Seas 11 to 15 ft. Wave Detail: E 13 ft at 12 seconds and NE 10 ft at 8 seconds. Showers. A chance of tstms after midnight. .SAT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 11 to 15 ft. Showers with a chance of tstms. .SAT NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 10 to 14 ft. Showers with a chance of tstms. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to 13 ft. Showers likely. .SUN NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. Showers likely. 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. $$ ANZ255-240000- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. Wave Detail: NE 9 ft at 8 seconds and SE 6 ft at 9 seconds. .TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 11 ft. Wave Detail: E 10 ft at 10 seconds and N 1 foot at 4 seconds. .THU...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 11 ft. Wave Detail: E 10 ft at 10 seconds and NE 7 ft at 7 seconds. .THU NIGHT...NE winds 25 to 30 kt, increasing to 30 to 35 kt after midnight. Seas 9 to 12 ft. Wave Detail: E 11 ft at 11 seconds and N 8 ft at 6 seconds. A chance of showers. .FRI...NE winds 35 to 40 kt with gusts up to 45 kt. Seas 9 to 12 ft. Wave Detail: E 10 ft at 11 seconds and N 9 ft at 7 seconds. Showers likely. .FRI NIGHT...NE winds 35 to 40 kt with gusts up to 45 kt. Seas 9 to 13 ft. Wave Detail: E 12 ft at 12 seconds and N 9 ft at 7 seconds. Showers. A chance of tstms after midnight. .SAT...N winds 35 to 40 kt with gusts up to 45 kt. Seas 9 to 13 ft. Showers with a chance of tstms. .SAT NIGHT...N winds 30 to 40 kt with gusts up to 45 kt. Seas 9 to 12 ft. Showers. .SUN...N winds 25 to 35 kt with gusts up to 40 kt. Seas 7 to 10 ft. Showers likely. .SUN NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-240000- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 7 to 10 ft. Wave Detail: E 10 ft at 8 seconds and SE 10 ft at 9 seconds. .TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 10 ft, building to 9 to 12 ft after midnight. Wave Detail: NE 10 ft at 8 seconds and E 10 ft at 9 seconds, becoming E 11 ft at 10 seconds and N 5 ft at 6 seconds. .THU...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to 12 ft. Wave Detail: E 12 ft at 11 seconds and N 5 ft at 6 seconds. .THU NIGHT...NE winds 25 to 30 kt, increasing to 30 to 35 kt after midnight. Gusts up to 45 kt. Seas 9 to 12 ft. Wave Detail: E 12 ft at 11 seconds and N 7 ft at 7 seconds. A chance of showers after midnight. .FRI...NE winds 35 to 45 kt with gusts up to 55 kt. Seas 10 to 13 ft. Wave Detail: E 11 ft at 11 seconds and N 9 ft at 7 seconds. A chance of showers in the morning, then showers likely in the afternoon. .FRI NIGHT...N winds 35 to 40 kt with gusts up to 45 kt. Seas 9 to 13 ft. Wave Detail: N 9 ft at 7 seconds and E 9 ft at 12 seconds. Showers. .SAT...N winds 35 to 40 kt with gusts up to 50 kt. Seas 9 to 13 ft. Showers. .SAT NIGHT...N winds 30 to 35 kt with gusts up to 45 kt. Seas 8 to 11 ft. Showers. .SUN...N winds 25 to 35 kt with gusts up to 45 kt. Seas 7 to 10 ft. Showers likely. .SUN 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. $$ ANZ232-240000- Nantucket Sound- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 5 seconds and SE 2 ft at 10 seconds. .TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 5 seconds and E 6 ft at 10 seconds. .THU...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 6 seconds and E 6 ft at 11 seconds. .THU NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 5 seconds and E 6 ft at 11 seconds. A chance of showers after midnight. .FRI...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: N 6 ft at 6 seconds and E 5 ft at 11 seconds. A chance of showers in the morning, then showers likely in the afternoon. .FRI NIGHT...NE winds 35 to 40 kt with gusts up to 45 kt. Seas 5 to 8 ft. Wave Detail: N 8 ft at 6 seconds and E 5 ft at 12 seconds. Showers. A chance of tstms after midnight. .SAT AND SAT NIGHT...N winds 30 to 40 kt with gusts up to 45 kt. Seas 5 to 7 ft. Showers with a chance of tstms. .SUN AND SUN NIGHT...N winds 25 to 35 kt. Gusts up to 45 kt. Seas 4 to 6 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-240000- Vineyard Sound- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 25 to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and SE 1 foot at 10 seconds. .TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and SE 3 ft at 10 seconds. .THU...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 5 seconds and SE 3 ft at 12 seconds. .THU NIGHT...NE winds 25 to 30 kt. Gusts up to 40 kt after midnight. Seas 4 to 6 ft. Wave Detail: NE 5 ft at 6 seconds and SE 2 ft at 12 seconds. A chance of showers after midnight. .FRI...NE winds 30 to 40 kt with gusts up to 50 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 5 seconds and SE 2 ft at 12 seconds. A chance of showers in the morning, then showers likely in the afternoon. .FRI NIGHT...N winds 30 to 35 kt with gusts up to 45 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 8 seconds and NE 5 ft at 5 seconds. Showers. .SAT AND SAT NIGHT...N winds 30 to 35 kt, diminishing to 25 to 30 kt. Gusts up to 45 kt. Seas 4 to 6 ft. Showers with a chance of tstms. .SUN...N winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers likely. .SUN NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas around 3 ft. Showers likely. 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. $$ ANZ234-240000- Buzzards Bay- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt, increasing to 25 to 30 kt this afternoon. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 4 seconds and SE 1 foot at 10 seconds. .TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 4 seconds and SE 2 ft at 11 seconds. .THU...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 4 seconds and E 3 ft at 14 seconds. .THU NIGHT...NE winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 4 to 6 ft. Wave Detail: N 5 ft at 7 seconds and NE 4 ft at 4 seconds. .FRI...NE winds 30 to 40 kt with gusts up to 50 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 6 seconds and E 2 ft at 11 seconds. A chance of showers. .FRI NIGHT...N winds 30 to 35 kt with gusts up to 45 kt. Seas 4 to 6 ft. Wave Detail: N 6 ft at 8 seconds and NE 5 ft at 5 seconds. Showers likely. .SAT THROUGH SUN...N winds 25 to 35 kt with gusts up to 45 kt. Seas 4 to 6 ft. Showers. .SUN NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas around 3 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-240000- Rhode Island Sound- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 25 to 30 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 7 seconds and SE 6 ft at 9 seconds. .TONIGHT...NE winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 5 to 8 ft. Wave Detail: NE 7 ft at 5 seconds and SE 7 ft at 10 seconds. .THU...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 8 ft. Wave Detail: SE 7 ft at 12 seconds and NE 5 ft at 5 seconds. .THU NIGHT...NE winds 25 to 30 kt. Gusts up to 40 kt after midnight. Seas 5 to 8 ft. Wave Detail: SE 7 ft at 12 seconds and NE 6 ft at 6 seconds. .FRI...NE winds 30 to 40 kt with gusts up to 50 kt. Seas 5 to 8 ft. Wave Detail: N 8 ft at 5 seconds and SE 6 ft at 12 seconds. A chance of showers. .FRI NIGHT...N winds 30 to 35 kt with gusts up to 45 kt. Seas 5 to 8 ft. Wave Detail: N 7 ft at 6 seconds and SE 5 ft at 12 seconds. Showers likely. .SAT AND SAT NIGHT...N winds 30 to 35 kt with gusts up to 45 kt. Seas 5 to 8 ft. Showers. .SUN...N winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers likely. .SUN NIGHT...N winds 20 to 25 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. $$ ANZ237-240000- Block Island Sound- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 7 seconds and SE 7 ft at 9 seconds. .TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: E 8 ft at 9 seconds and E 7 ft at 8 seconds. .THU...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Wave Detail: E 9 ft at 11 seconds and NE 5 ft at 5 seconds. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt, increasing to 25 to 30 kt with gusts up to 40 kt after midnight. Seas 6 to 9 ft. Wave Detail: E 9 ft at 12 seconds and NE 5 ft at 6 seconds. .FRI...N winds 25 to 30 kt, increasing to 30 to 35 kt in the afternoon. Gusts up to 50 kt. Seas 6 to 9 ft. Wave Detail: E 9 ft at 12 seconds and N 7 ft at 6 seconds. A chance of showers. .FRI NIGHT...N winds around 30 kt with gusts up to 45 kt. Seas 6 to 9 ft. Wave Detail: E 8 ft at 12 seconds and N 6 ft at 6 seconds. Showers likely. .SAT AND SAT NIGHT...N winds 25 to 35 kt with gusts up to 45 kt. Seas 5 to 8 ft. Showers likely. .SUN...N winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft. Showers likely. .SUN NIGHT...N winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to 5 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-240000- Boston Harbor- 703 AM EDT Wed Sep 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING... ...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. .TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Waves 2 to 3 ft. .FRI...NE winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Gusts up to 40 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. A chance of showers. .FRI NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. Showers likely. .SAT...N winds 25 to 30 kt with gusts up to 40 kt. Waves around 2 ft, except 4 to 6 ft at the outer harbor entrance. Showers likely. .SAT NIGHT AND SUN...N winds 25 to 30 kt with gusts up to 40 kt. Waves around 2 ft, except 4 to 6 ft at the outer harbor entrance. Showers likely with a chance of tstms. .SUN NIGHT...N winds 20 to 25 kt with gusts up to 35 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. Showers likely. Winds and waves 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. $$ ANZ236-240000- Narragansett Bay- 703 AM EDT Wed Sep 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING... ...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt with gusts up to 30 kt. Waves 2 to 3 ft. .TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. .THU...NE winds 20 to 25 kt with gusts up to 30 kt. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. .FRI...N winds 25 to 30 kt with gusts up to 45 kt. Waves around 3 ft, except 4 to 6 ft at the bay entrance. A chance of showers. .FRI NIGHT...N winds 25 to 30 kt with gusts up to 40 kt. Waves around 3 ft, except 4 to 6 ft at the bay entrance. Showers likely. .SAT THROUGH SUN...N winds 25 to 30 kt with gusts up to 45 kt. Waves around 3 ft. Showers likely. .SUN NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-240000- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 703 AM EDT Wed Sep 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT... ...GALE WARNING IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY MORNING... ...STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 7 seconds and SE 6 ft at 12 seconds. .TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 8 ft. Wave Detail: E 8 ft at 10 seconds and N 1 foot at 4 seconds. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 10 seconds and NE 4 ft at 3 seconds. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 8 to 10 ft. Wave Detail: E 10 ft at 12 seconds and N 4 ft at 4 seconds. .FRI...NE winds 25 to 30 kt, increasing to 30 to 35 kt in the afternoon. Gusts up to 45 kt. Seas 9 to 12 ft, building to 11 to 13 ft in the afternoon. Wave Detail: E 11 ft at 11 seconds and N 7 ft at 5 seconds, becoming E 10 ft at 11 seconds and NE 9 ft at 7 seconds. A chance of showers. .FRI NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 11 to 14 ft. Wave Detail: E 13 ft at 11 seconds and N 10 ft at 7 seconds. Showers likely. .SAT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 13 to 14 ft. Showers. .SAT NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 12 to 14 ft. Showers with a chance of tstms. .SUN...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 11 to 14 ft. Showers likely. .SUN NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 10 to 12 ft. Showers likely. 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. $$ ANZ281-240000- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH FRIDAY MORNING... ...STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .TODAY...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 6 to 9 ft, building to 8 to 10 ft this afternoon. Wave Detail: E 9 ft at 8 seconds and SE 5 ft at 11 seconds, becoming E 10 ft at 10 seconds. .TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to 12 ft. Wave Detail: E 11 ft at 9 seconds and N 1 foot at 4 seconds. .THU...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 10 to 12 ft. Wave Detail: E 12 ft at 10 seconds and NE 8 ft at 8 seconds. .THU NIGHT...NE winds 25 to 35 kt with gusts up to 40 kt. Seas 10 to 14 ft. Wave Detail: E 13 ft at 11 seconds and N 8 ft at 7 seconds. A chance of showers after midnight. .FRI...NE winds 30 to 40 kt with gusts up to 45 kt. Seas 12 to 15 ft. Wave Detail: E 15 ft at 12 seconds and N 10 ft at 6 seconds. Showers likely. .FRI NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 13 to 17 ft. Wave Detail: E 16 ft at 11 seconds and N 11 ft at 8 seconds. Showers. A chance of tstms after midnight. .SAT AND SAT NIGHT...NE winds 30 to 35 kt, diminishing to 25 to 30 kt. Gusts up to 45 kt. Seas 14 to 17 ft, subsiding to 13 to 15 ft. Showers with a chance of tstms. .SUN...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 12 to 15 ft. Showers likely. .SUN NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 10 to 13 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-240000- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to 12 ft. Wave Detail: E 12 ft at 9 seconds. .TONIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 10 to 13 ft. Wave Detail: E 13 ft at 10 seconds and N 1 foot at 4 seconds. .THU...NE winds around 30 kt with gusts up to 45 kt. Seas 12 to 14 ft. Wave Detail: E 14 ft at 11 seconds and NE 8 ft at 8 seconds. .THU NIGHT...NE winds 30 to 35 kt with gusts up to 45 kt. Seas 12 to 14 ft. Wave Detail: E 14 ft at 11 seconds and N 10 ft at 7 seconds. A chance of showers in the evening, then showers likely after midnight. .FRI...NE winds 35 to 40 kt with gusts up to 50 kt. Seas 13 to 15 ft. Wave Detail: E 14 ft at 11 seconds and NE 11 ft at 8 seconds. Showers. .FRI NIGHT...NE winds 35 to 40 kt with gusts up to 45 kt. Seas 14 to 16 ft. Wave Detail: E 15 ft at 11 seconds and NE 12 ft at 8 seconds. Showers with a chance of tstms. .SAT...N winds 30 to 35 kt with gusts up to 45 kt. Seas 14 to 16 ft. Showers with a chance of tstms. .SAT NIGHT...N winds 25 to 35 kt with gusts up to 45 kt. Seas 12 to 15 ft. Showers. .SUN...N winds 25 to 30 kt with gusts up to 35 kt. Seas 10 to 14 ft. Showers likely. .SUN NIGHT...N winds 20 to 25 kt. Seas 9 to 12 ft. Showers likely. 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. $$ ANZ283-240000- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 703 AM EDT Wed Sep 23 2026 ...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT... ...STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY EVENING... .TODAY...NE winds around 30 kt with gusts up to 40 kt. Seas 9 to 12 ft. Wave Detail: E 12 ft at 9 seconds. .TONIGHT...NE winds around 30 kt with gusts up to 40 kt. Seas 11 to 13 ft. Wave Detail: E 13 ft at 10 seconds and N 1 foot at 4 seconds. .THU...NE winds around 30 kt with gusts up to 40 kt. Seas 13 to 14 ft. Wave Detail: E 14 ft at 11 seconds and NE 9 ft at 7 seconds. .THU NIGHT...NE winds 30 to 40 kt with gusts up to 50 kt. Seas 13 to 14 ft. Wave Detail: E 14 ft at 11 seconds and NE 11 ft at 8 seconds. A chance of showers. .FRI...NE winds 35 to 40 kt with gusts up to 50 kt. Seas 14 to 15 ft. Wave Detail: E 14 ft at 11 seconds and NE 11 ft at 8 seconds. Showers likely. .FRI NIGHT...N winds 35 to 40 kt with gusts up to 50 kt. Seas 13 to 15 ft. Wave Detail: E 14 ft at 11 seconds and NE 11 ft at 8 seconds. Showers. .SAT AND SAT NIGHT...N winds 30 to 40 kt with gusts up to 50 kt. Seas 13 to 15 ft, subsiding to 11 to 14 ft. Showers with a chance of tstms. .SUN AND SUN NIGHT...N winds 25 to 35 kt with gusts up to 45 kt, diminishing to 20 to 25 kt with gusts up to 30 kt. Seas 9 to 12 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston