


Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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829 FZUS51 KBOX 132305 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 704 PM EDT Wed Aug 13 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-141200- 704 PM EDT Wed Aug 13 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres is continuing to bring rather tranquil boating conditions through midweek. Winds gradually increase from the SW today and Wed but remain below Small Craft Advisory criteria for most areas. Northern outer waters may approach 25 kts briefly later Wednesday. A cold front should cross the waters Thu night into Fri. $$ ANZ250-141200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. A slight chance of showers and tstms. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM after midnight. .THU...S winds around 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 7 seconds. A chance of showers and tstms. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SW 2 ft at 3 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and S 1 foot at 4 seconds. .FRI NIGHT...E winds around 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and E 1 foot at 15 seconds. .SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and NE 2 ft at 6 seconds. .SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. .MON AND MON NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt, becoming SE around 10 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-141200- Massachusetts Bay and Ipswich Bay- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers and tstms this evening. A slight chance of showers and tstms after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM after midnight. .THU...SW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 7 seconds. A chance of showers and tstms. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and S 1 foot at 3 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and E 1 foot at 16 seconds. .FRI NIGHT...E winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and E 1 foot at 15 seconds. .SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 2 ft at 6 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN NIGHT...W winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON AND MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming SE 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. $$ ANZ231-141200- Cape Cod Bay- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 8 seconds. A slight chance of showers and tstms. Patchy fog after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM after midnight. .THU...S winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 7 seconds, becoming S 1 foot at 2 seconds and E 1 foot at 7 seconds. A chance of showers and tstms. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SW 1 foot at 2 seconds and SE 1 foot at 7 seconds, becoming NW 1 foot at 3 seconds and E 1 foot at 7 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and E 1 foot at 16 seconds. .FRI NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds and SE 1 foot at 15 seconds. .SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and NW 1 foot at 4 seconds. .SUN THROUGH MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-141200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 704 PM EDT Wed Aug 13 2025 .TONIGHT...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 E 2 ft at 8 seconds. A slight chance of tstms. Patchy fog after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less after midnight. .THU...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming N with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers and tstms. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM after midnight. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and S 1 foot at 5 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and S 1 foot at 6 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds around 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. .MON AND MON NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt, becoming E. 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. $$ ANZ255-141200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. Patchy fog. A slight chance of showers and tstms after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers and tstms. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at 5 seconds. .FRI NIGHT AND SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at 6 seconds. .SAT NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 6 seconds and SE 1 foot at 15 seconds. .SUN THROUGH MON NIGHT...E winds 15 to 20 kt. Seas 2 to 4 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-141200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. Patchy fog. A slight chance of tstms. A chance of showers after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...W winds around 5 kt, becoming N 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM in the evening. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at 5 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at 6 seconds. .SUN THROUGH MON NIGHT...E winds 15 to 20 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. $$ ANZ232-141200- Nantucket Sound- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 8 seconds. Patchy fog. A slight chance of showers and tstms after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .THU...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 7 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 7 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 foot at 4 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 6 seconds. .SUN THROUGH MON NIGHT...E winds 15 to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-141200- Vineyard Sound- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. A slight chance of showers and tstms after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .THU...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 foot at 5 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and S 1 foot at 6 seconds. .SUN THROUGH MON NIGHT...E winds 15 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. $$ ANZ234-141200- Buzzards Bay- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. A slight chance of tstms. A slight chance of showers after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .THU...SW winds around 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds, becoming W 1 foot at 4 seconds and E 1 foot at 8 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 foot at 5 seconds. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 5 seconds, becoming NE 1 foot at 3 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 2 seconds and S 1 foot at 6 seconds. .SUN THROUGH MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-141200- Rhode Island Sound- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. A slight chance of tstms. A chance of showers after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .THU...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at 5 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 5 seconds and S 1 foot at 6 seconds. .SUN THROUGH MON NIGHT...E winds 15 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. $$ ANZ237-141200- Block Island Sound- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 8 seconds. A slight chance of showers and tstms this evening, then a chance of showers after midnight. Patchy fog after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less after midnight. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...W winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and S 1 foot at 4 seconds. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and S 1 foot at 5 seconds. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and S 1 foot at 6 seconds. .SAT AND SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and S 1 foot at 6 seconds. .SUN THROUGH MON NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-141200- Boston Harbor- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft this evening, then 1 foot or less. A chance of showers and tstms, mainly this evening. Some tstms may be severe with heavy rainfall. .THU...SW winds 5 to 10 kt, becoming SE in the afternoon. Waves 1 foot or less. A chance of showers and tstms. Some tstms may be severe with heavy rainfall. .THU NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Waves 1 foot or less, then around 2 ft after midnight. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...E winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less. .SAT AND SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .SUN THROUGH MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 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. $$ ANZ236-141200- Narragansett Bay- 704 PM EDT Wed Aug 13 2025 .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft. A slight chance of showers. A slight chance of tstms this evening. Patchy fog after midnight. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less after midnight. .THU...S winds 5 to 10 kt. Waves around 2 ft in the morning, then 1 foot or less. A chance of tstms. A chance of showers. Patchy fog in the morning. Some tstms may be severe with heavy rainfall. Vsby 1 NM or less in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves 1 foot or less, then around 2 ft after midnight. A chance of showers and tstms in the evening. Some tstms may be severe with heavy rainfall. .FRI...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. .FRI NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. .SAT AND SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .SUN THROUGH MON NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston