Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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826 FZUS51 KBOX 261703 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 103 PM EDT Sat Sep 26 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-270600- 103 PM EDT Sat Sep 26 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... A slow moving and intensifying nor`easter approaches southern New England this evening and lingers over the southern waters into this weekend. Dangerous conditions are expected for mariners today through this weekend. Peak NE wind gusts of 35 to 60 kt with maximum seas of 15-25 feet across the open waters are expected. Mariners should keep up to date with the latest forecasts and be prepared to return to port. $$ ANZ250-270600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds around 30 kt with gusts up to 50 kt. Seas 11 to 13 ft. Wave Detail: E 13 ft at 11 seconds and E 7 ft at 6 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds around 30 kt with gusts up to 50 kt. Seas 11 to 14 ft. Wave Detail: E 14 ft at 10 seconds and SE 4 ft at 8 seconds. Patchy fog. Showers. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .SUN...NE winds 25 to 30 kt with gusts up to 50 kt. Seas 11 to 13 ft, subsiding to 9 to 12 ft in the afternoon. Wave Detail: E 13 ft at 10 seconds, becoming E 12 ft at 9 seconds and SE 3 ft at 9 seconds. Patchy fog. Showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft. Wave Detail: E 10 ft at 9 seconds and SE 2 ft at 9 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. Wave Detail: E 9 ft at 9 seconds and SE 2 ft at 8 seconds. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 5 to 7 ft. Wave Detail: E 7 ft at 8 seconds and SE 2 ft at 7 seconds. Showers, mainly in the evening. .TUE AND TUE NIGHT...NW winds 5 to 10 kt. Seas 4 to 6 ft. .WED AND WED NIGHT...W winds around 5 kt, becoming SW. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-270600- Massachusetts Bay and Ipswich Bay- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 50 kt. Seas 8 to 11 ft. Wave Detail: E 11 ft at 11 seconds and E 2 ft at 4 seconds. Patchy fog. Showers with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt with gusts up to 50 kt. Seas 8 to 11 ft. Wave Detail: E 11 ft at 10 seconds and S 3 ft at 8 seconds. Patchy fog. Showers. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .SUN...NE winds 25 to 30 kt with gusts up to 50 kt. Seas 8 to 11 ft. Wave Detail: E 11 ft at 9 seconds. Patchy fog. Showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Wave Detail: E 9 ft at 10 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 to 3 NM. .MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 9 seconds. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: E 6 ft at 8 seconds and S 2 ft at 9 seconds. Showers. .TUE AND TUE NIGHT...N winds 5 to 10 kt, becoming NW. Seas 3 to 5 ft. .WED AND WED NIGHT...SW winds around 5 kt. Seas 2 to 4 ft. 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. $$ ANZ231-270600- Cape Cod Bay- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: NE 7 ft at 6 seconds and S 2 ft at 5 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: NE 7 ft at 6 seconds and SW 4 ft at 6 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .SUN...NE winds 20 to 25 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: E 6 ft at 6 seconds. Patchy fog. Showers likely. A chance of tstms in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: NE 5 ft at 6 seconds. Patchy fog. Showers likely. A chance of tstms in the evening. Vsby 1 to 3 NM. .MON...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 7 seconds and E 2 ft at 4 seconds. Showers likely. Patchy fog in the morning. .MON NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 7 seconds. A chance of showers. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-270600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 10 to 14 ft. Wave Detail: E 14 ft at 11 seconds and SW 4 ft at 8 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 45 kt. Seas 10 to 14 ft. Wave Detail: E 14 ft at 10 seconds and SE 8 ft at 9 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 NM or less. .SUN...E winds 20 to 25 kt with gusts up to 45 kt. Seas 9 to 12 ft. Wave Detail: NE 12 ft at 10 seconds and S 6 ft at 10 seconds. Patchy fog. A chance of showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. Wave Detail: NE 8 ft at 9 seconds and S 5 ft at 9 seconds. Patchy fog. A chance of showers in the evening. Showers likely after midnight. Vsby 1 to 3 NM. .MON...E winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 8 ft. Wave Detail: NE 7 ft at 9 seconds and S 3 ft at 7 seconds. A chance of showers. Patchy fog in the morning. .MON NIGHT...SE winds 10 to 15 kt, becoming S 5 to 10 kt after midnight. Seas 5 to 7 ft. Wave Detail: E 6 ft at 8 seconds and S 3 ft at 8 seconds. A chance of showers. .TUE...W winds around 10 kt. Seas 4 to 6 ft. .TUE NIGHT AND WED...W winds 5 to 10 kt. Seas 3 to 5 ft. .WED NIGHT...SW winds around 5 kt. Seas 2 to 4 ft. 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. $$ ANZ255-270600- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds around 30 kt with gusts up to 45 kt. Seas 10 to 14 ft. Wave Detail: NE 13 ft at 11 seconds and S 5 ft at 10 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 9 to 13 ft. Wave Detail: NE 13 ft at 10 seconds and SW 11 ft at 9 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .SUN...E winds 20 to 25 kt with gusts up to 45 kt, diminishing to 15 to 20 kt with gusts up to 35 kt in the afternoon. Seas 8 to 11 ft, subsiding to 6 to 9 ft in the afternoon. Wave Detail: E 9 ft at 10 seconds and S 8 ft at 10 seconds, becoming S 8 ft at 9 seconds and E 5 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 9 seconds and E 5 ft at 9 seconds. Patchy fog. Showers likely, mainly in the evening. Vsby 1 to 3 NM after midnight. .MON...E winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 8 seconds and E 4 ft at 9 seconds. A chance of showers. .MON NIGHT...S winds around 10 kt, becoming SW after midnight. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 8 seconds and E 4 ft at 9 seconds. A chance of showers. .TUE...W winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. .WED AND WED NIGHT...W winds around 5 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-270600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds around 35 kt with gusts up to 55 kt. Seas 11 to 15 ft. Wave Detail: NE 14 ft at 10 seconds and N 5 ft at 7 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 30 to 35 kt, diminishing to 25 to 30 kt after midnight. Gusts up to 55 kt. Seas 10 to 14 ft. Wave Detail: NE 14 ft at 10 seconds and NW 4 ft at 7 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 NM or less. .SUN...E winds 20 to 25 kt with gusts up to 50 kt, diminishing to 15 to 20 kt with gusts up to 40 kt in the afternoon. Seas 9 to 12 ft, subsiding to 7 to 10 ft in the afternoon. Wave Detail: E 12 ft at 9 seconds and SW 8 ft at 10 seconds, becoming E 10 ft at 9 seconds and S 8 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 15 to 20 kt. Gusts up to 30 kt in the evening. Seas 5 to 7 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: S 6 ft at 8 seconds and NE 4 ft at 9 seconds, becoming SE 5 ft at 7 seconds and E 4 ft at 8 seconds. Patchy fog. Showers. Vsby 1 to 3 NM. .MON...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and E 4 ft at 9 seconds. A chance of showers in the morning, then showers likely in the afternoon. Patchy fog in the morning. .MON NIGHT...S winds around 10 kt, becoming SW after midnight. Seas 5 to 6 ft. Wave Detail: S 6 ft at 8 seconds and E 3 ft at 9 seconds. A chance of showers in the evening. .TUE...W winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. 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. $$ ANZ232-270600- Nantucket Sound- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 8 ft. Wave Detail: NE 8 ft at 8 seconds and S 2 ft at 10 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 7 seconds and S 4 ft at 10 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 NM or less. .SUN...E winds 20 to 25 kt with gusts up to 45 kt, diminishing to 15 to 20 kt with gusts up to 35 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: E 6 ft at 9 seconds and S 3 ft at 10 seconds. Patchy fog. A chance of showers. A chance of tstms in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...E winds around 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 3 to 5 ft. Wave Detail: E 4 ft at 9 seconds and SE 3 ft at 8 seconds. Patchy fog. Showers likely. A chance of tstms in the evening. Vsby 1 to 3 NM. .MON...E winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 7 seconds. A chance of showers. Patchy fog in the morning. .MON NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 4 ft. Wave Detail: S 2 ft at 8 seconds and E 2 ft at 9 seconds. A chance of showers. .TUE THROUGH WED...W winds 5 to 10 kt. Seas 2 to 4 ft. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-270600- Vineyard Sound- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 50 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 6 seconds and S 5 ft at 6 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: NE 7 ft at 6 seconds and SE 2 ft at 10 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 to 3 NM. .SUN...NE winds 20 to 25 kt with gusts up to 45 kt, becoming E 15 to 20 kt with gusts up to 35 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: NE 6 ft at 7 seconds and S 4 ft at 10 seconds. Patchy fog. A chance of showers. A chance of tstms in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: S 4 ft at 9 seconds and NE 2 ft at 4 seconds, becoming S 3 ft at 7 seconds and NE 2 ft at 6 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 to 3 NM after midnight. .MON...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds. Showers likely. Patchy fog in the morning. .MON NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and E 1 foot at 12 seconds. Showers likely, mainly in the evening. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. 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. $$ ANZ234-270600- Buzzards Bay- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 4 seconds and S 4 ft at 6 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 45 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 4 seconds and SW 4 ft at 5 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 to 3 NM. .SUN...NE winds 15 to 20 kt. Gusts up to 45 kt, decreasing to 35 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 4 seconds and SE 3 ft at 9 seconds. Patchy fog. Showers likely in the morning, then a chance of showers and tstms in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SE 3 ft at 7 seconds and NE 2 ft at 4 seconds, becoming E 3 ft at 6 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .MON...E winds around 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds. Showers likely. Patchy fog in the morning. .MON NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and E 1 foot at 17 seconds. Showers likely, mainly in the evening. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-270600- Rhode Island Sound- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 30 to 35 kt with gusts up to 50 kt. Seas 7 to 10 ft. Wave Detail: NE 10 ft at 8 seconds and N 5 ft at 7 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 to 3 NM. .TONIGHT...NE winds 30 to 35 kt, diminishing to 25 to 30 kt after midnight. Gusts up to 55 kt. Seas 7 to 10 ft. Wave Detail: NE 10 ft at 8 seconds and W 2 ft at 6 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 to 3 NM. .SUN...NE winds 20 to 25 kt with gusts up to 50 kt, becoming E 15 to 20 kt with gusts up to 40 kt in the afternoon. Seas 6 to 9 ft. Wave Detail: NE 9 ft at 8 seconds and SE 7 ft at 10 seconds. Patchy fog. A chance of showers in the morning. Showers likely with a chance of tstms in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...NE winds 15 to 20 kt. Gusts up to 30 kt, decreasing to 20 kt after midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 9 seconds and NE 3 ft at 5 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 to 3 NM after midnight. .MON...E winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and NE 2 ft at 7 seconds. Showers. Patchy fog in the morning. .MON NIGHT...SE winds around 10 kt, becoming SW after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and E 1 foot at 10 seconds. Showers likely in the evening. .TUE AND TUE NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 2 to 4 ft. .WED AND WED NIGHT...W winds 5 to 10 kt. Seas around 2 ft. 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. $$ ANZ237-270600- Block Island Sound- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 55 kt. Seas 8 to 11 ft. Wave Detail: E 10 ft at 10 seconds and N 5 ft at 7 seconds. Patchy fog. Showers with a slight chance of tstms. Vsby 1 to 3 NM. .TONIGHT...NE winds 25 to 30 kt with gusts up to 55 kt. Seas 7 to 10 ft. Wave Detail: NE 10 ft at 9 seconds and SW 3 ft at 10 seconds. Patchy fog. Showers in the evening, then showers with a chance of tstms after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .SUN...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 50 kt. Seas 6 to 9 ft. Wave Detail: E 9 ft at 9 seconds and S 7 ft at 10 seconds. Patchy fog. Showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft, subsiding to 3 to 5 ft after midnight. Wave Detail: S 7 ft at 9 seconds and E 5 ft at 7 seconds, becoming SE 4 ft at 7 seconds. Patchy fog. Showers. .MON...E winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 8 seconds and E 3 ft at 8 seconds. Showers. Patchy fog in the morning. .MON NIGHT...SE winds 10 to 15 kt, becoming SW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and E 2 ft at 9 seconds. Showers likely in the evening. .TUE AND TUE NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .WED AND WED NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-270600- Boston Harbor- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 50 kt. Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. Patchy fog. Showers with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt with gusts up to 50 kt. Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. Patchy fog. Showers. Vsby 1 to 3 NM. .SUN...NE winds 20 to 25 kt with gusts up to 45 kt. Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance. Patchy fog. Showers. A chance of tstms in the afternoon. Vsby 1 NM or less. .SUN NIGHT...NE winds 15 to 20 kt with gusts up to 35 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. Patchy fog. A chance of tstms. Showers. Vsby 1 to 3 NM. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. Showers. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft in the evening, then 1 foot or less. At the outer harbor entrance, waves 2 to 4 ft. Showers. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. 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. $$ ANZ236-270600- Narragansett Bay- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds around 25 kt with gusts up to 50 kt. Waves around 3 ft, except 4 to 6 ft at the bay entrance. Patchy fog. Showers with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 20 to 25 kt with gusts up to 45 kt. Waves around 3 ft, except 4 to 6 ft at the bay entrance. Patchy fog. Showers. A chance of tstms after midnight. Vsby 1 to 3 NM. .SUN...NE winds 15 to 20 kt with gusts up to 45 kt. Waves around 3 ft, except 4 to 6 ft at the bay entrance. Patchy fog. Showers. A chance of tstms in the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .MON...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Waves 2 to 3 ft. Showers. Patchy fog in the morning. .MON NIGHT...E winds around 10 kt, becoming SW after midnight. Waves 2 to 3 ft. Showers, mainly in the evening. .TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-270600- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds around 30 kt with gusts up to 45 kt. Seas 12 to 14 ft. Wave Detail: E 14 ft at 10 seconds and NW 8 ft at 9 seconds. Patchy fog. Showers with a slight chance of tstms. Vsby 1 to 3 NM. .TONIGHT...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 12 to 14 ft. Wave Detail: E 14 ft at 10 seconds and E 5 ft at 4 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .SUN...NE winds 25 to 30 kt with gusts up to 50 kt. Seas 11 to 13 ft. Wave Detail: E 13 ft at 10 seconds and SE 6 ft at 10 seconds. Patchy fog. Showers likely. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...E winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to 11 ft. Wave Detail: E 10 ft at 9 seconds and S 4 ft at 10 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM. .MON...E winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 9 seconds and S 3 ft at 8 seconds. Showers. Patchy fog in the morning. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming SE 5 to 10 kt after midnight. Seas 6 to 8 ft. Wave Detail: E 7 ft at 8 seconds and S 2 ft at 7 seconds. Showers likely. .TUE...SW winds 5 to 10 kt. Seas 5 to 6 ft. A chance of showers. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. 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. $$ ANZ281-270600- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 14 to 15 ft. Wave Detail: E 15 ft at 10 seconds and S 6 ft at 10 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 25 to 30 kt, becoming E 20 to 25 kt after midnight. Gusts up to 40 kt. Seas 12 to 14 ft. Wave Detail: E 13 ft at 10 seconds and SW 9 ft at 11 seconds. Patchy fog. Showers. Vsby 1 NM or less. .SUN...E winds 20 to 25 kt with gusts up to 45 kt. Seas 11 to 12 ft, subsiding to 9 to 11 ft in the afternoon. Wave Detail: NE 10 ft at 9 seconds and S 8 ft at 10 seconds, becoming NE 9 ft at 9 seconds and S 7 ft at 10 seconds. Patchy fog. A chance of showers. Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon. .SUN NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 10 ft. Wave Detail: E 8 ft at 9 seconds and S 6 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...E winds 15 to 20 kt, becoming SE 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 7 to 9 ft. Wave Detail: NE 7 ft at 9 seconds and S 5 ft at 8 seconds. Patchy fog in the morning. A chance of showers in the morning. .MON NIGHT...SE winds 10 to 15 kt, becoming S 5 to 10 kt after midnight. Seas 7 to 8 ft. Wave Detail: E 6 ft at 8 seconds and S 5 ft at 8 seconds. A chance of showers. .TUE...SW winds around 10 kt. Seas 6 to 7 ft. .TUE NIGHT AND WED...W winds 5 to 10 kt. Seas 4 to 6 ft. .WED NIGHT...SW winds around 5 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-270600- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt with gusts up to 45 kt. Seas 14 to 16 ft. Wave Detail: NE 16 ft at 10 seconds and SW 8 ft at 10 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...E winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Gusts up to 45 kt. Seas 12 to 15 ft. Wave Detail: NE 15 ft at 10 seconds and W 12 ft at 10 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .SUN...SE winds 15 to 20 kt with gusts up to 40 kt, becoming E 10 to 15 kt with gusts up to 30 kt in the afternoon. Seas 10 to 13 ft, subsiding to 8 to 10 ft in the afternoon. Wave Detail: S 10 ft at 10 seconds and NE 7 ft at 10 seconds, becoming S 9 ft at 9 seconds and NE 6 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 6 to 8 ft. Wave Detail: S 7 ft at 8 seconds and NE 6 ft at 9 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .MON...SE winds 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: SW 6 ft at 8 seconds and NE 5 ft at 9 seconds. Patchy fog in the morning. A chance of showers in the morning. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 6 to 8 ft. Wave Detail: SW 6 ft at 8 seconds and E 5 ft at 9 seconds. A chance of showers. .TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. .TUE NIGHT...W winds 5 to 10 kt. Seas 4 to 6 ft. .WED AND WED NIGHT...W winds around 5 kt. Seas 3 to 4 ft. 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. $$ ANZ283-270600- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 103 PM EDT Sat Sep 26 2026 ...STORM WARNING IN EFFECT THROUGH SUNDAY MORNING... .THIS AFTERNOON...NE winds 30 to 35 kt with gusts up to 55 kt. Seas 15 to 18 ft. Wave Detail: NE 17 ft at 11 seconds and NW 6 ft at 8 seconds. Patchy fog. Showers with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 30 to 35 kt, becoming E 25 to 30 kt after midnight. Gusts up to 55 kt. Seas 14 to 17 ft, subsiding to 12 to 15 ft after midnight. Wave Detail: NE 17 ft at 10 seconds and N 7 ft at 8 seconds, becoming NE 15 ft at 10 seconds and NW 7 ft at 7 seconds. Patchy fog. Showers. A chance of tstms in the evening. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .SUN...E winds 20 to 25 kt with gusts up to 50 kt, diminishing to 15 to 20 kt with gusts up to 35 kt in the afternoon. Seas 10 to 14 ft, subsiding to 7 to 10 ft in the afternoon. Wave Detail: E 13 ft at 10 seconds and S 11 ft at 9 seconds, becoming S 9 ft at 9 seconds and E 6 ft at 10 seconds. Patchy fog. A chance of showers in the morning, then showers likely in the afternoon. Vsby 1 to 3 NM. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 8 seconds and E 5 ft at 9 seconds. Patchy fog. Showers in the evening. A chance of showers after midnight. Vsby 1 to 3 NM. .MON...SE winds 5 to 10 kt with gusts up to 20 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 8 seconds and E 4 ft at 9 seconds. A chance of showers. Patchy fog in the morning. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 7 ft. Wave Detail: SW 6 ft at 8 seconds and E 4 ft at 9 seconds. A chance of showers. .TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .TUE NIGHT THROUGH WED NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. 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