I'm in Northern Indiana and we all felt it here. Actually, Prince (my dog) woke up and started barking and growling about 5 minutes before it started. It was really odd.
DH and I live in Batavia (a Chicago burb) and both our dogs who sleep with us started barking. We just thought that they were barking at something out side!!
I was pretty close (central IL) and a geologist and I SLEPT THROUGH IT! I'm sooo ticked! I was just complaining yesterday that the geology in IL is boring.
Apparently our fishtank water (75 gal) sloshed considerably.
I live right in ST.Louis and it woke me and my boyfriend up this morning. At first I thought it was a big wind blowing through cuz it only lasted for like 5 seconds. I felt the aftershock about 10 minutes ago. The after shock was a 4.7!!!!
I was up late last night doing work, and I felt everything shake, BUT I thought it was just the wind! I live in a high rise, and when it's really windy, the building creaks. It was the first time I felt shaking, so I thought it was just really, really strong wind!