A brief thunderstorm that rolled through Washington County late Wednesday afternoon left behind cooler temperatures that are expected to last over the next several days, according to the National Weather Service.
The county was under a severe thunderstorm watch until 10 p.m. Wednesday. At about 4:30 p.m., the National Weather Service reported a tornado developing two miles southwest of Hagerstown, prompting a tornado warning for the county until 5 p.m.
The tornado never materialized and the warning expired.
"We have not had any reports of tornadoes," Calvin Meadows, meteorological technician for the National Weather Service in Sterling, Va., said Wednesday.