May I warn you about aftershocks? Earthquakes can come in clusters. The initial shock is often followed by a (usually smaller) after shock that occurs anywhere from a few minutes to a week or two later. So don't be too surprised if there is a second quake in the next few days.

You may find this interesting reading

The Virtual Times: The New Madrid Earthquake

Granny:hippy:
Storm Crow Reviewed by Storm Crow on . Earthquake!!! No, those of you in the midwest are not freaking out (if you were up). That was a 5.4 magnitude earthquake in south east Illinois (Olney) at 4:37 AM. And for those of you in California, yes it was nothing big, but for us in the midwest, we're not used to this..... There was some minor damage as far as 150 miles away.... Did anyone else feel this? Rating: 5