Mag 5.2 Earthquake in the Midwest, 5:37 AM EDT,
5:37 AM, local EDT time. I was awake early and felt it. It rumbled for a few seconds, built up, and then the building shook, then died down to a rumble. It lasted maybe 7 to 12 seconds.
I started to call the TV stations but their lines were busy.
Here's the detail from US Geological Survey.
Here's the map from the US Geological Survey.
It's on the WABASH FAULT, which runs along the border of Indiana and Illinois, and is also associated with the Wabash river. The Wabash Fault zone is north of the New Madrid fault zone. There is debate in the geological community as to how closesly associated or connected the Wabash fault zone is with the New Madrid fault zone. The New Madrid fault was the location of huge magnitude 7 quakes in 1811 and 1812.
Update: The USGS has re-classified this as a 5.2 magnitude quake, after originally publishing it as 5.4.
Update: Several aftershocks later in the day. First aftershock was 4.6, then some smaller ones.