Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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435 FZUS51 KBOX 132005 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 405 PM EDT Sun Sep 13 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-140900- 405 PM EDT Sun Sep 13 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front quickly moves through the waters late tonight with high pres building across the waters Mon into Tue. This high will then shift east of the waters Wed into Thu as our next cold front approaches from the west. $$ ANZ250-140900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...N winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and W 1 foot at 3 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at 5 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 2 ft at 6 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 2 ft at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and E 2 ft at 9 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 3 seconds. .THU NIGHT AND FRI...SW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-140900- Massachusetts Bay and Ipswich Bay- 405 PM EDT Sun Sep 13 2026 .TONIGHT...S winds around 5 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and NW 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 foot at 4 seconds. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and N 2 ft at 4 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 2 ft at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and E 2 ft at 8 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .THU NIGHT AND FRI...SW winds around 10 kt, becoming N. Seas around 2 ft. A chance of showers. .FRI NIGHT...N winds 5 to 10 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. $$ ANZ231-140900- Cape Cod Bay- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...NW winds around 5 kt, becoming SW after midnight. Seas 1 foot or less. Wave Detail: E 1 foot at 3 seconds and W 1 foot at 4 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 3 seconds and SE 1 foot at 6 seconds. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 2 ft at 7 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 5 seconds and S 1 foot at 8 seconds. .THU...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds. .THU NIGHT AND FRI...SW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-140900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and W 1 foot at 3 seconds. Patchy fog. A chance of showers with a slight chance of tstms this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and S 3 ft at 6 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .MON NIGHT...N winds around 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 6 seconds and SE 2 ft at 9 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 7 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at 5 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT AND FRI...SW winds 10 to 15 kt, becoming N with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 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. $$ ANZ255-140900- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and NW 1 foot at 2 seconds. Patchy fog. A chance of showers with a slight chance of tstms this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and N 2 ft at 4 seconds. .MON NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SW 2 ft at 6 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and NW 1 foot at 3 seconds. .WED AND WED NIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and N 1 foot at 3 seconds. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-140900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...W winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and NW 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: S 3 ft at 6 seconds and N 2 ft at 3 seconds. A chance of showers in the morning. .MON NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 4 seconds and S 2 ft at 6 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and S 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and N 1 foot at 3 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and E 1 foot at 5 seconds. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt. Seas 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. $$ ANZ232-140900- Nantucket Sound- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...W winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and W 1 foot at 3 seconds. Patchy fog. A chance of showers this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 5 seconds. A chance of showers in the morning. .MON NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and S 1 foot at 6 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and S 1 foot at 6 seconds. .WED AND WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 6 seconds and SE 1 foot at 9 seconds. .THU...SW winds 5 to 10 kt. Seas around 2 ft. .THU NIGHT AND FRI...SW winds 10 to 15 kt, becoming N with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-140900- Vineyard Sound- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...NW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and NW 1 foot at 3 seconds. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SW 1 foot at 6 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 2 ft at 3 seconds and S 1 foot at 6 seconds, becoming N 1 foot at 3 seconds and S 1 foot at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and NW 1 foot at 3 seconds. .THU...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and E 1 foot at 6 seconds. .THU NIGHT AND FRI...SW winds 10 to 15 kt, becoming N with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT...NE 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. $$ ANZ234-140900- Buzzards Bay- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...NW winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: NE 1 foot at 2 seconds and NW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 4 seconds. A chance of showers in the morning. .MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at 6 seconds. .TUE...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and NW 1 foot at 3 seconds. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 3 seconds. .THU NIGHT AND FRI...SW winds 10 to 15 kt, becoming N with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT...NE winds around 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-140900- Rhode Island Sound- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and NW 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and NW 2 ft at 3 seconds. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and S 2 ft at 6 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and S 1 foot at 6 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and NW 1 foot at 4 seconds. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SW 2 ft at 4 seconds. 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. $$ ANZ237-140900- Block Island Sound- 405 PM EDT Sun Sep 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby 1 to 3 NM after midnight. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and SE 2 ft at 6 seconds. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and S 2 ft at 6 seconds. .TUE...NE winds around 10 kt with gusts up to 20 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and NW 1 foot at 2 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 4 seconds and SE 1 foot at 5 seconds. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SE 2 ft at 7 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-140900- Boston Harbor- 405 PM EDT Sun Sep 13 2026 .TONIGHT...SE winds around 5 kt, becoming SW after midnight. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 NM. .MON...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .MON NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. .TUE...NE winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .THU...S winds 5 to 10 kt. Waves 1 foot or less. .THU NIGHT AND FRI...SW winds 5 to 10 kt, becoming N. Waves 1 foot or less, then around 2 ft. A chance of showers. .FRI NIGHT...N winds 5 to 10 kt. Waves 1 foot or less. 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. $$ ANZ236-140900- Narragansett Bay- 405 PM EDT Sun Sep 13 2026 .TONIGHT...W winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Vsby 1 to 3 NM. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .MON NIGHT...N winds around 10 kt with gusts up to 20 kt. Waves around 2 ft. .TUE...NE winds 5 to 10 kt, becoming E in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .THU...SW winds 5 to 10 kt. Waves around 2 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .FRI AND FRI NIGHT...N winds 10 to 15 kt, diminishing to 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-140900- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 405 PM EDT Sun Sep 13 2026 .TONIGHT...NE winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and SE 1 foot at 10 seconds. Patchy fog. A chance of showers with a slight chance of tstms this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 3 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .MON NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 7 seconds. .TUE...NE winds 10 to 15 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 2 ft at 7 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and E 2 ft at 8 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 3 seconds. .THU NIGHT AND FRI...SW winds 10 to 15 kt, becoming N. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...N winds 10 to 15 kt with gusts up to 20 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. $$ ANZ281-140900- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 405 PM EDT Sun Sep 13 2026 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 3 to 5 ft. Wave Detail: SE 3 ft at 5 seconds and SE 2 ft at 9 seconds. Patchy fog. A chance of showers and tstms this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt, becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas around 4 ft. Wave Detail: N 3 ft at 5 seconds and S 3 ft at 6 seconds. Patchy fog in the morning with vsby 1 NM or less. .MON NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 5 seconds and S 2 ft at 6 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and S 1 foot at 7 seconds. .TUE NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 3 to 4 ft. Wave Detail: N 3 ft at 6 seconds and S 1 foot at 7 seconds. .WED AND WED NIGHT...SW winds around 5 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and E 3 ft at 8 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT AND FRI...SW winds 10 to 15 kt, becoming N. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-140900- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 405 PM EDT Sun Sep 13 2026 .TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 3 to 5 ft. Wave Detail: S 4 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. A chance of showers with a slight chance of tstms this evening. Vsby 1 NM or less. .MON...NW winds 10 to 15 kt, becoming N in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 3 ft at 6 seconds. Patchy fog in the morning with vsby 1 NM or less. .MON NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after midnight. Gusts up to 25 kt. Seas around 4 ft. Wave Detail: N 3 ft at 5 seconds and SW 2 ft at 6 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. Wave Detail: N 4 ft at 6 seconds and S 1 foot at 6 seconds. .TUE NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 5 seconds and SE 1 foot at 7 seconds. .WED AND WED NIGHT...S winds around 5 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and SE 3 ft at 9 seconds. .THU THROUGH FRI NIGHT...NE winds 10 to 15 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. $$ ANZ283-140900- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 405 PM EDT Sun Sep 13 2026 .TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .MON...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 3 ft at 6 seconds. .MON NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 5 seconds and SE 2 ft at 9 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 25 kt in the morning. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds and S 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SE 1 foot at 5 seconds. .WED AND WED NIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and E 2 ft at 6 seconds. .THU THROUGH FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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