3.4-magnitude earthquake felt in central Pa.

An earthquake that measured 3.4 on the Richter scale hit just over 11 miles southwest of Mifflintown in Juniata County, the US Geological survey confirmed Wednesday night.

Reports of ground shaking started hitting Twitter just after 8:30 p.m. Wednesday.

UPDATE:Earthquakes in Pennsylvania aren't new, but recent shake has 'unusual' qualities

According to Twitter, the quake was felt in Camp Hill, Mechanicsburg, Lititz, Harrisburg and Carlisle.

What does a 3.4-magnitude earthquake feel like? According to the USGS magnitude/intensity comparison, an earthquake of that magnitude will be "felt only by a few persons at rest, especially on upper floors of buildings.

"Many people do not recognize it as an earthquake. Standing motor cars may rock slightly. Vibrations similar to the passing of a truck."

So in other words, this isn't the kind of quake that is going to do damage.