Total Information AM 4/21/08 Earthquake! (Part 2) We had another temblor early this morning. This one checked in with a magnitude of 4.5 We talked with Dr. Keith Koper of St. Louis University about it.
Earthquake aftershocks could soon subside The U.S. Geological Survey says 24 aftershocks have been centered in Illinois since last week's five-point-two-magnitude earthquake.