8/23/2011 -- 5.3 magnitude earthquake in Colorado .. on top of the 4.7 earlier

Earthquake Details This event has been reviewed by a seismologist.

Magnitude 5.3
Date-Time Tuesday, August 23, 2011 at 05:46:19 UTC Monday, August 22, 2011 at 11:46:19 PM at epicenter



Sources:Magnitude 5.3 - COLORADO
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