Five earthquakes hit central Oklahoma early Tuesday

[RufusTFirefly]

6. Garvin County, OK, is apparently the site of some fracking

From what I discern, it's less than 60 miles from Oklahoma City.

A 2011 United States Geological Survey (USGS) report, Examination of Possibly Induced Seismicity from Hydraulic Fracturing in the Eola Field, Garvin County, Oklahoma (note: PDF), links a series of earthquakes in Oklahoma in January 2011 to a fracking operation underway there. The USGS found that, overall, some 50 small earthquakes had been registered in the region, ranging in magnitude from 1.0 to 2.8. The bulk occurred within 2.1 miles of Eola Field, a fracking operation in southern Garvin County. The USGS determined that "the character of the seismic recordings indicate that they are both shallow and unique.”

Source: SourceWatch