RobertB-DC's Journal: New Madrid Fault Mostly Harmless?

In the early 1800s, sparsely populated southwestern Missouri was shaken by the largest earthquake recorded in the continental US: the New Madrid Earthquake, estimated at an 8.0 on the Richter scale. Since then, cities along the Mississippi River from Memphis to St. Louis have wondered when the next one would hit. Maybe never, say researchers at Northwestern University. The rock deep underground is cold and dead, and 1812 may have been the fault's dying gasp.