'Felt like bombs going off. It's just a huge loud noise and then it's like a reverb from that boom that just shakes the entire house,' Logan County resident Nancy York told KOCO.
An area of Logan County around Oklahoma City felt the brunt of the quakes, which were as large as magnitude 3.5
Residents feared for their personal safety and for their property but scientists remain unsure what's causing them, much less how to predict or stop them
Scientists say it could be the result of fracking, changes in lake water levels or even a natural occurrence
