https://twitter.com/NWSPittsburgh/status/1477386558239952896?t=7pn0v-zv3_7-yTrNorC9qA&s=19

The loud explosion heard over SW PA earlier may have been a meteor explosion. This GOES-16 GLM Total Optical Energy product shows a flash that was not associated with lightning. No confirmation, but this is the most likely explanation at this time.