Earthquake this morning

I cannot believe that we had an earthquake this morning in Illinois. The epicenter was in central/ part of the state - West Salem. It registered 5.2 on the scale. It was felt up here though around 4:40 am. I woke up but did not really feel it. I think that it did wake me up though. My dh felt it. I did not know that there was a fault line in Illinois. I thought my dh was kidding me when he said it was an earthquake.