5.4 magnitude. Thought someone was shaking the back of my desk chair here in Marion, IN. Yes, I was at work at 5:36.
Pretty creepy...

Shaun

Welcome to California! If you only thought a 5.4 was "creepy", you were still pretty far away from the epicenter. Pretty rare for you guys to have one at all.

It woke me up. At first I thought it was a tornado or a really loud and rumbly train (which is wierd since there aren't any train tracks near my house). I didn't feel the 4.5 aftershock though.

Scott

The Midwest goes big when it goes:
http://en.wikipedia.org/wiki/New_Madrid_Earthquake
Wife felt the aftershock. I was on the road. Said water was sloshing in the aquarium.
Shaun

I felt it in Franklin, TN.

I didn't feel the quake but I did the aftershock. I live a pretty good distance from the epicenter but still it was something else.

Well I slept through the two in the night and was driving during the day one. I do remember the quake back in 1968 which was just a bit bigger than this time. I expect some more smaller after shocks that can be felt.
Joe

I didn't feel the initial quake, but did experience the aftershock about 11:15 A.M. that day.

There was one awhile back I felt, I think it was in 1997 or 99, can't remember. Both were pretty wild. I can't imagine what a major quake would be like.

But I hear it ain't over yet.