Where were you at 1:50 PM on Wednesday, June 23, 2010 and did you feel the quake? The 5.0 quake was centered near Quebec and folks I’ve talked to who work in tall buildings seem to have been the most likely to feel it. Stories in the Freep and the Lansing State Journal confirm this.
The earliest record of earthquake tremors felt in Michigan Territory (statehood came in 1837) were from the great series of shocks centered near New Madrid, Missouri in 1811 and 1812. As many as nine tremors from the New Madrid earthquake series were reported felt distinctly at Detroit.
A damaging earthquake, apparently centered between Montreal and Quebec in the Saint Lawrence Valley, occurred on October 20, 1870. This shock was felt over an area estimated to be at least a million square miles including Sault Sainte Marie…
They have a bit of information on the actual largest earthquake in Michigan history, the 4.6 tremor from August 10, 1947.