The National Weather Service has confirmed a tornado touched down Tuesday near Morgantown, Berks County, where damage to some homes occurred but there were no immediate reports of injuries.
Meteorologist Jonathan O'Brien said a damage assessment team was scheduled to arrive Wednesday to Caernarvon Township to determine the strength of the twister that struck Tuesday, according to The Associated Press.
Extensive damage could be seen to homes in a development in the township, where Philadelphia television news helicopters flew overhead.
In the Exton and West Goshen areas, a tornado warning forced many people to take cover in the basements of their homes. The sky darkened and winds whipped, but the warning was lifted just before 7 p.m.
Berks County emergency officials reported structural damage to about 20 properties, some of it significant. Emergency dispatchers in Berks and Chester counties earlier cited roof damage and some partial collapses in Caernarvon Township, which includes Morgantown.
Valley Ponds development homeowners association representatives said about 70 percent of the homes remained livable.
The storm, which arrived shortly before 6 p.m. brought marble-sized hail to areas. A tree fell on a house on Park Hill Drive, and two trees fell onto a trailer in Rapho Township, according to Lancaster County-Wide Communications. A tractor-trailer was also blown onto its side on Old Philadelphia Pike near the border of East Lampeter and Leacock townships, but the driver was uninjured.
Emergency crews responded to reports of storm damage and downed wires in the storm's path.