The Enid News and Eagle, Enid, OK

Archive

Earthquake Swarm Okla_Hass.jpg

A record 5.6-magnitude earthquake struck near Prague in November 2011. Since January 2009, more than 200 magnitude 3.0 or greater earthquakes have hit central Oklahoma. A new report by the U.S. Geological Survey suggests that "swarms" of these temblors are here to stay throughout a large swath of central Oklahoma. (AP Photo/Justin Juozapavicius)