The USGS has confirmed a 3.7 magnitude earthquake in Indian Head Park, Illinois.
The earthquake hit around 12:35 p.m. (CST).
Earlier, the National Weather Service tweeted that a possible earthquake may have hit the Chicago area.
NWS Chicago tweet: https://twitter.com/NWSChicago/status/397434166998220800
WGN-TV has received a number of phone calls from viewers who felt the rumble.
This is a developing story – check back for more details.