When I think of earthquakes, I typically associate them with places like California. However, Michigan has indeed experienced significant seismic activity throughout its history.
There is one location in Michigan's Lower Peninsula that is more susceptible than anywhere else in the state for an earthquake and it's in Branch County near Coldwater.
A co-worker of ours sent us a picture of a textbook her daughter is currently using at her college. Mind you, this is a Michigan Geography textbook they actually had to pay for.
It's been a couple of years since Michigan experienced an earthquake, but a mining explosion on Drummond Island came close. The explosion registered 2.7 on the Richter scale.