Small earthquake in Illinois

[RLynne]

http://www.nytimes.com/2010/02/11/us/11chicago.html?ref=us

A small earthquake in northern Illinois set off car alarms, knocked books off the shelves and jolted scores of people awake at 4 a.m. Wednesday, but otherwise caused no serious damage, officials said.

Pretty sure that's what woke me up this morning...weird. Not used to that sort of thing around here!