Throughout 2011 and 2012, in the central U.S., there will be events held for the 200th Anniversary of the great 1811 and 1812 New Madrid earthquakes.
The New Madrid Seismic Zone stretches from west of Memphis, Tennessee into southern Illinois. The 1811 and 1812 earthquakes were between magnitude 7-8 (Richter scale), with hundreds of aftershocks. They were felt down to the Gulf of Mexico, and north to Canada.