The 2011 Virginia Earthquake occurred on August 23 , 2011 , at 1:51 pm EDT ( 17:51 UTC ) in the Piedmont region of the US state of Virginia .
The 2011 Virginia earthquake was a magnitude 5.8 ( Mw ) earthquake in the U.S. state of Virginia on August 23 , 2011 , at 1:51 PM EDT ( 17:51 UTC ) .