A minor earthquake hit Central Pennsylvania Wednesday night. The U.S. Geological Survey reports the quake, with a preliminary magnitude of 3.4, struck at around 8:31 p.m. The epicenter was located in Juniata county, Pa., about 11 miles south/southwest of Mifflintown. Reports of mild shaking came in to the U.S.G.S website from Altoona to Lancaster, and from State College to Hagerstown, Md.