Public Works crews around the area are working to clean up after severe weather moved through the area Thursday night.
Extreme winds, rain and lightning struck the Pittsburgh region Thursday evening.
A strong storm Sunday caused some damage and knocked over trees.
The National Weather Service in Pittsburgh confirmed that an EF1-Twister touched down yesterday in Mercer County.
Severe weather tore through the area this afternoon prompting tornado and thunderstorm warnings and leaving behind uprooted trees and property damage in West Deer in Allegheny County and Jackson Center in Mercer County.
The severe weather affecting some of the Midwest could creep into Pittsburgh late Sunday night.
As a line of storms moves toward western Pennsylvania, local counties are under a Severe Thunderstorm Watch.