FZUS51 KBOX 192306 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 705 PM EDT Tue May 19 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-201200- 705 PM EDT Tue May 19 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. $$ ANZ250-201200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and W 2 ft at 4 seconds. Patchy fog in the morning. A chance of showers in the afternoon. Vsby 1 to 3 NM in the morning. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and SE 2 ft at 9 seconds. .THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 9 seconds. .THU NIGHT...S winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 1 foot at 9 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and N 1 foot at 3 seconds. .SAT AND SAT NIGHT...E winds around 5 kt, becoming SE. Seas around 2 ft. A chance of showers. .SUN...E winds around 10 kt. Seas around 2 ft. A chance of showers. .SUN NIGHT...E winds around 10 kt. Seas 3 to 5 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-201200- Massachusetts Bay and Ipswich Bay- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 25 kt this evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 5 seconds. A chance of showers with a slight chance of tstms this evening. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 8 seconds. A chance of showers in the afternoon. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 foot at 9 seconds. .THU...N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SE 1 foot at 9 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: SW 1 foot at 2 seconds and N 1 foot at 4 seconds, becoming N 1 foot at 4 seconds and SE 1 foot at 10 seconds. .FRI AND FRI NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 4 seconds and SE 1 foot at 10 seconds. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft. A chance of showers. .SUN AND SUN NIGHT...E winds 5 to 10 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. $$ ANZ231-201200- Cape Cod Bay- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 9 seconds. A slight chance of showers this evening. Patchy fog after midnight with vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 10 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and S 1 foot at 11 seconds. A chance of showers in the evening. .THU...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at 11 seconds. .THU NIGHT...S winds around 5 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: N 1 foot at 5 seconds and SE 1 foot at 10 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 10 seconds. .SAT THROUGH SUN NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-201200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 705 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and W 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 7 seconds and W 2 ft at 4 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers. .THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: S 3 ft at 8 seconds and N 2 ft at 4 seconds. .THU NIGHT...SE winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 6 seconds and SE 2 ft at 8 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 9 seconds. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 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. $$ ANZ255-201200- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 705 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and SE 7 ft at 11 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: W 6 ft at 6 seconds and SE 2 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 7 seconds and SE 2 ft at 9 seconds. A chance of showers. Patchy fog in the evening with vsby 1 to 3 NM. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and N 2 ft at 3 seconds. A chance of showers in the morning. .THU NIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 4 seconds. .FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 5 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers after midnight. .SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Showers likely. .SUN AND SUN NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas 4 to 6 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-201200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 705 PM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and W 7 ft at 8 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...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 4 ft at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 15 to 20 kt, becoming NW around 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 7 seconds and SE 4 ft at 9 seconds. A chance of showers. .THU...NE winds 10 to 15 kt, becoming E in the afternoon. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and N 2 ft at 3 seconds. A chance of showers in the morning. .THU NIGHT...SE winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and NE 1 foot at 4 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 6 seconds. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 2 to 4 ft. Showers likely. .SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Showers likely. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 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. $$ ANZ232-201200- Nantucket Sound- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and N 1 foot at 3 seconds. A chance of showers. .THU...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and W 2 ft at 6 seconds. .THU NIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and SW 1 foot at 5 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: N 1 foot at 4 seconds and SW 1 foot at 6 seconds, becoming NE 1 foot at 4 seconds and SW 1 foot at 6 seconds. .FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 1 foot or less. A chance of showers after midnight. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-201200- Vineyard Sound- 705 PM EDT Tue May 19 2026 .TONIGHT...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 W 3 ft at 4 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and W 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and NW 2 ft at 3 seconds. A chance of showers. .THU...N winds 10 to 15 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and N 2 ft at 3 seconds. A chance of showers in the morning. .THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and SE 2 ft at 10 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at 6 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. A chance of showers after midnight. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT THROUGH SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 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. $$ ANZ234-201200- Buzzards Bay- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SW 3 ft at 4 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and W 2 ft at 2 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 3 seconds and S 3 ft at 7 seconds. A chance of showers in the evening. .THU...N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and SW 2 ft at 7 seconds. .THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at 11 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at 6 seconds. .FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 1 foot or less. A chance of showers after midnight. .SAT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT AND SUN...E winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-201200- Rhode Island Sound- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds and W 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 3 ft at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 4 ft at 8 seconds. A chance of showers. .THU...N winds 10 to 15 kt, becoming E in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and S 3 ft at 9 seconds. A chance of showers in the morning. .THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and S 2 ft at 9 seconds. .FRI...NE winds around 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 6 seconds. .FRI NIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas around 2 ft. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .SUN...E winds 15 to 20 kt. Seas 3 to 5 ft. Showers likely. .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. $$ ANZ237-201200- Block Island Sound- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and S 4 ft at 8 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and SW 3 ft at 3 seconds. Patchy fog in the morning. A chance of showers in the afternoon. Vsby 1 to 3 NM in the morning. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and N 1 foot at 3 seconds. A chance of showers. .THU...NE winds around 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and NW 1 foot at 3 seconds. A chance of showers in the morning. .THU NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and N 1 foot at 3 seconds. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and N 1 foot at 3 seconds. .FRI NIGHT...S winds 5 to 10 kt, becoming SE after midnight. Seas around 2 ft. A chance of showers after midnight. .SAT AND SAT NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .SUN...E winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-201200- Boston Harbor- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Waves around 2 ft. A chance of showers with a slight chance of tstms this evening. .WED...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. A chance of showers in the afternoon. .WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Waves around 2 ft. .THU...N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. .THU NIGHT...S winds around 5 kt, becoming N after midnight. Waves 1 foot or less. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SUN AND SUN NIGHT...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-201200- Narragansett Bay- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Waves 2 to 3 ft. Patchy fog after midnight with vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers in the afternoon. .WED NIGHT...NW winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers in the evening. .THU...N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Waves around 2 ft. .THU NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft. .FRI...NE winds 5 to 10 kt, becoming SE in the afternoon. Waves around 2 ft. .FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers after midnight. .SAT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SAT NIGHT AND SUN...E winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 to 3 ft. Showers likely. .SUN NIGHT...E winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-201200- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds. Patchy fog. A slight chance of showers this evening. Vsby 1 NM or less. .WED...SW winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 7 seconds and W 2 ft at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 10 to 15 kt, becoming N after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and NW 3 ft at 4 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 3 ft at 5 seconds and S 3 ft at 8 seconds. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 5 seconds and S 2 ft at 8 seconds. .FRI AND FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and N 2 ft at 4 seconds. .SAT AND SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SUN...E winds around 10 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. $$ ANZ281-201200- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 6 seconds and SE 5 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 6 seconds and SE 4 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 6 seconds and SE 2 ft at 9 seconds. A chance of showers. Patchy fog in the evening with vsby 1 NM or less. .THU...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 5 seconds and S 2 ft at 9 seconds. A chance of showers in the morning. .THU NIGHT...SE winds around 5 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and N 2 ft at 6 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and SW 2 ft at 6 seconds. .SAT AND SAT NIGHT...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SUN...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-201200- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and SE 6 ft at 10 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 7 ft. Wave Detail: W 6 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or less. .WED NIGHT...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 9 seconds. A chance of showers. Patchy fog in the evening with 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 N 2 ft at 4 seconds. A chance of showers. .THU NIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SW 2 ft at 6 seconds. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 2 ft at 6 seconds. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers after midnight. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .SAT NIGHT...E winds 15 to 20 kt. Seas 3 to 5 ft. Showers likely. .SUN AND SUN NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 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. $$ ANZ283-201200- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 705 PM EDT Tue May 19 2026 .TONIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 7 ft. Wave Detail: S 7 ft at 8 seconds and W 3 ft at 4 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM after midnight. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 7 ft. Wave Detail: SW 6 ft at 7 seconds and W 3 ft at 4 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and N 2 ft at 4 seconds. A chance of showers in the evening, then showers likely after midnight. Patchy fog in the evening. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and N 2 ft at 4 seconds. A chance of showers. Patchy fog in the morning. .THU NIGHT AND FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 2 ft at 6 seconds. .FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 10 seconds. A chance of showers after midnight. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. .SAT NIGHT AND SUN...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Showers. .SUN NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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