A flash flood watch has expired for much of the Baltimore area after storms ripped through the region late Thursday.
Showers with scattered thunderstorms are expected overnight through Friday, the National Weather Service said Thursday night. Locally heavy rainfall may produce flooding.
A severe thunderstorm warning was in effect for Havre de Grace, Churchville and Level through 10:15 p.m., for Baltimore, Towson and Essex through 10 p.m., and for Anne Arundel County, Howard County and Prince George’s County until 9:15 p.m., with the potential for winds blowing up to 60 mph.
One road in Harford County, 152 South at Old Mountain Road, had its right lane closed because of a downed tree, according to the Maryland State Highway Administration. In Baltimore County, Maryland 147 north at Glenview Road was closed because of a tree down.
The Key Bridge lost power to overhead lights as a result of a lightning strike, the Maryland Transportation Authority said in a tweet.
Both the Key and Bay bridges were under wind advisories that expired after the thunderstorms passed.
A stalled front delivering cloudy skies and increased rain chances Friday will result in the coolest daytime temperatures seen since the middle of June, the National Weather Service said, though it will remain on the humid side. The high temperature is expected to be 83 degrees.
Showers and patchy fog are both likely before 3 p.m. and there is a chance of thunderstorms and heavy rain. The chance of rain is 70% with rainfall amounts from a quarter to half of an inch possible.
Showers and patchy fog are likely Saturday with a high of 88, the weather service said. There’s a chance of showers Sunday with a high of 92.
Baltimore’s temperature earlier Thursday reached 90 degrees Fahrenheit for a record-breaking 25th day this month.
The record dates to 1872, according to the National Weather Service. The previous record of 24 straight days of 90-plus degrees was set in July 2011.
A heat advisory was in effect for the western shore of the Chesapeake Bay, including Baltimore, until 7 p.m. The high recorded temperature at BWI Marshall Airport was 97 degrees, according to the National Weather Service.
The Maryland Health Department on Wednesday announced its second heat-related death of 2020, a Montgomery County man 65 years or older. The department on Monday announced its first heat-related death of 2020, a Baltimore City man in his 30s. Baltimore issued a Code Red Extreme Health Alert for Monday and Tuesday.
Conditions are predicted to cool toward the weekend, as Friday and Saturday are expected to top out at 87.
Baltimore Sun reporter McKenna Oxenden contributed to this article.