Felt it in Aurora, I was awake to let dogs out at about 3:35 am and was laying in bed around 4 am when I thought I heard a faint rumble of thunder than all the windows shook, It woke the wife up, but since we were in the middle of a heavy snow storm I thought it was just a gust of wind. Saw the morning news and realized what I took for wind must have been the earthquake.