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WEST SALEM, Ill. - A 5.4 magnitude earthquake that appeared to rival the strongest recorded in the region rocked people up to 450 miles away early Friday, surprising residents unaccustomed to such a powerful Midwest temblor.
n the winter of 1811-12, the central Mississippi Valley was struck by three of the most powerful earthquakes in U.S. history. Even today, this region has more earthquakes than any other part of the United States east of the Rocky Mountains.
Originally posted by LDragonFire
4.5 aftershock occurred around 15-20 minutes ago.