The National Weather Service: Storm Prediction Center in Norman, OK has issued their Day 2 convective weather outlook.
Mid Western PA and most of Central PA will be in a SLIGHT risk for severe weather. Even though the words slight do not seem like much, SLIGHT can bring hail over 1-inch in size, winds above 65 MPH, and tornado spin up between EF0-EF2 (Possibly EF3 if conditions are right).
Always be weather alert during times like this. May has brought havoc to the Pennsylvania region, for example, May 31st, 1985 was the worst tornado outbreak this state has seen.
Dr. Greg Forbes with The Weather Channel, has issued TORCON indexes of 3. This means there is a 30% chance of a tornado within a 50-mile radius.
SPC has also issued a probabilistic map of severe weather.