Wow... I don't know if it woke me up or I was awake but I heard a deep rumbling and thought that sounds like an earthquake. Well I got up and went on the computer and checked Millersville's real time seismic data.. Something showed up.. So maybe it wasn't my imagination. Checked USGS's earthquake site and they showed a confirmed 3.3 earthquake just north of Mountville,pa Pretty cool!
Here's info for USGS's site - Magnitude 3.4 - PENNSYLVANIA