FZUS51 KBOX 200803 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 403 AM EDT Wed May 20 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-202100- 403 AM EDT Wed May 20 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... A strong cold front will cross the waters late Wed and Wed evening. Strong high pres builds over the Gt Lakes Thu and moves into the waters Fri. The high moves offshore by Sat as a frontal boundary approaches from the S. $$ ANZ250-202100- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. A slight chance of showers this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 9 seconds. .THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 8 seconds and NW 2 ft at 3 seconds. .THU NIGHT...S winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 7 seconds and W 1 foot at 3 seconds. .FRI...N winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 7 seconds and W 1 foot at 3 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 3 seconds. .SAT THROUGH SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-202100- Massachusetts Bay and Ipswich Bay- 403 AM EDT Wed May 20 2026 .TODAY...W winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 9 seconds. A slight chance of showers and tstms this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 10 seconds. .THU...N winds around 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds. .THU NIGHT...S winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 2 ft at 5 seconds and S 1 foot at 2 seconds, becoming NE 1 foot at 5 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 5 seconds, becoming S 1 foot at 3 seconds and NE 1 foot at 5 seconds. .FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 6 seconds. .SAT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ231-202100- Cape Cod Bay- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms this afternoon. .TONIGHT...W winds around 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 10 seconds. A chance of showers. .THU...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 11 seconds. .THU NIGHT...S winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: N 1 foot at 5 seconds. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds. .FRI NIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 3 seconds and NE 1 foot at 4 seconds. .SAT THROUGH SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-202100- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 403 AM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at 15 seconds. Patchy fog this morning. A slight chance of showers and tstms this afternoon. Vsby 1 NM or less this morning. .TONIGHT...W winds 15 to 20 kt, becoming NW around 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds and SE 2 ft at 15 seconds. A chance of showers. Patchy fog in the evening with vsby 1 NM or less. .THU...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 6 seconds and NE 2 ft at 11 seconds. .THU NIGHT...SE winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and NE 2 ft at 7 seconds. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 7 seconds and S 1 foot at 6 seconds. .FRI NIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN AND SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. 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. $$ ANZ255-202100- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 403 AM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 15 seconds. Patchy fog this morning with vsby 1 NM or less. .TONIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at 15 seconds. Patchy fog. A chance of showers in the evening. Showers likely after midnight. Vsby 1 to 3 NM. .THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and NE 3 ft at 11 seconds. A chance of showers in the morning. .THU NIGHT...E winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and E 2 ft at 7 seconds. .FRI AND FRI NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NE 2 ft at 8 seconds. .SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 6 seconds and E 2 ft at 9 seconds. A chance of showers. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Showers likely. .SUN AND SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-202100- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 403 AM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 15 seconds. Patchy fog this morning. A slight chance of showers and tstms this afternoon. Vsby 1 to 3 NM this morning. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 2 ft at 15 seconds. Patchy fog. A chance of showers in the evening. Showers likely after midnight. Vsby 1 to 3 NM. .THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and NE 2 ft at 9 seconds. A chance of showers in the morning. .THU NIGHT...SE winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. .FRI AND FRI NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NE 2 ft at 8 seconds. .SAT AND SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and S 2 ft at 10 seconds. Showers likely. .SUN AND SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 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. $$ ANZ232-202100- Nantucket Sound- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers in the evening. Showers likely after midnight. Patchy fog in the evening with vsby 1 to 3 NM. .THU...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and NE 2 ft at 7 seconds. A chance of showers in the morning. .THU NIGHT...SE winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 5 seconds and E 1 foot at 5 seconds. .FRI...E winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: NE 1 foot at 5 seconds and SW 1 foot at 6 seconds, becoming E 1 foot at 4 seconds and S 1 foot at 6 seconds. .FRI NIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave Detail: SE 1 foot at 5 seconds. .SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT THROUGH SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-202100- Vineyard Sound- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at 14 seconds. A slight chance of showers and tstms this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming N after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at7 seconds and SE 1 foot at 13 seconds. A chance of showers and tstms in the evening, then showers likely after midnight. .THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and NE 1 foot at 7 seconds. A chance of showers in the morning. .THU NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and E 1 foot at 7 seconds. .FRI AND FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 6 seconds and E 1 foot at 6 seconds. .SAT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 1 foot at 7 seconds and SE 1 foot at 9 seconds. A chance of showers. .SAT NIGHT THROUGH SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 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. $$ ANZ234-202100- Buzzards Bay- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and SW 2 ft at 13 seconds. A chance of showers with a slight chance of tstms this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 1 foot at 12 seconds. A chance of showers. A chance of tstms in the evening. .THU...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 2 seconds and SW 1 foot at 6 seconds. .THU NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 6 seconds. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less. Wave Detail: NE 1 foot at 2 seconds and SW 1 foot at 6 seconds. .FRI NIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 1 foot or less. Wave Detail: SE 1 foot at 3 seconds. .SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT THROUGH SUN NIGHT...E winds 15 to 20 kt. Seas 2 to 3 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-202100- Rhode Island Sound- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and S 1 foot at 16 seconds. Patchy fog this morning. A chance of showers and tstms this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming N after midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at 15 seconds. A chance of showers and tstms in the evening, then showers likely after midnight. Patchy fog in the evening. .THU...NE winds 10 to 15 kt, becoming E in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and NE 2 ft at 12 seconds. A chance of showers in the morning. .THU NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds. .FRI AND FRI NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NE 2 ft at 8 seconds. .SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A chance of showers. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers likely. .SUN AND SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 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. $$ ANZ237-202100- Block Island Sound- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 2 ft at 10 seconds. A chance of showers and tstms this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of showers. A chance of tstms in the evening. Patchy fog in the evening. .THU...NE winds around 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 2 ft at 9 seconds. A chance of showers in the morning. .THU NIGHT...S winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and E 2 ft at 7 seconds. .FRI NIGHT...SE winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .SUN AND SUN NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-202100- Boston Harbor- 403 AM EDT Wed May 20 2026 .TODAY...W winds 10 to 15 kt. Gusts up to 20 kt this afternoon. Waves around 2 ft. A chance of showers this afternoon. .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Waves around 2 ft in the evening, then 1 foot or less. .THU...N winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .THU NIGHT...S winds 5 to 10 kt, becoming N after midnight. Waves 1 foot or less. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Waves 1 foot or less. .FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less. .SAT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-202100- Narragansett Bay- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers and tstms this afternoon. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves 2 to 3 ft. A chance of showers. A chance of tstms in the evening. .THU...N winds around 10 kt, becoming E in the afternoon. Waves around 2 ft. .THU NIGHT...S winds 5 to 10 kt, becoming N after midnight. Waves around 2 ft. .FRI AND FRI NIGHT...S winds 5 to 10 kt. Waves around 2 ft. .SAT...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SAT NIGHT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers likely. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-202100- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 403 AM EDT Wed May 20 2026 .TODAY...SW winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds and SE 2 ft at 11 seconds. .TONIGHT...W winds 10 to15 kt, becoming N after midnight. Gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SE 2 ft at 12 seconds. .THU...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: N 4 ft at 4 seconds and SE 2 ft at 8 seconds. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and E 2 ft at 7 seconds. .FRI AND FRI NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 5 seconds and E 2 ft at 8 seconds. .SAT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 10 seconds. .SAT NIGHT AND SUN...SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. 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. $$ ANZ281-202100- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 15 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 15 seconds. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...N winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 6 seconds and NE 3 ft at 7 seconds. A chance of showers in the morning. .THU NIGHT...NE winds around 5 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and NE 2 ft at 7 seconds. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and NE 2 ft at 8 seconds. .FRI NIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 6 seconds. .SAT AND SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-202100- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas around 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 15 seconds. Patchy fog this morning with vsby 1 NM or less. .TONIGHT...SW winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 15 seconds. Patchy fog. A chance of showers. Vsby 1 NM or less. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and E 3 ft at 9 seconds. A chance of showers. .THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SW 2 ft at 6 seconds. .FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and NE 2 ft at 7 seconds. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds. Showers likely. .SAT NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers likely. .SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Showers likely. .SUN NIGHT...E winds 15 to 20 kt with gusts upto 25 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. $$ ANZ283-202100- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 403 AM EDT Wed May 20 2026 .TODAY...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 2 ft at 14 seconds. Patchy fog this morning with vsby 1 NM or less. .TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 7 seconds and SE 2 ft at 15 seconds. Patchy fog. A chance of showers. Vsby 1 to 3 NM. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and NE 3 ft at 9 seconds. A chance of showers. .THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and S 2 ft at 6 seconds. A chance of showers in the evening. .FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 7 seconds and S 1 foot at 6 seconds. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. A chance of showers after midnight. .SAT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. .SAT NIGHT AND SUN...E winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Showers. .SUN NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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