Editing Greenbrier, Arkansas (section)

==Earthquake swarm==
{{main|Guy-Greenbrier earthquake swarm}}

On February 27, 2011, a magnitude 4.7 earthquake hit just outside Greenbrier. The quake was felt in several adjacent states, and as far away as [[Iowa]]. A swarm of almost 800 earthquakes have hit Arkansas since September 2010.<ref>[http://www.kansascity.com/2011/02/28/2689334/largest-earthquake-in-35-years.html Sarah Eddington, "Largest Earthquake in 35 Years Hits Arkansas", Associated Press via ''Kansas City Star'' (February 28, 2011)]</ref>