This is at least the third one in that area today.
http://earthquake.usgs.gov/earthquakes/eventpage/usc000tc8i#summary
4 Texas Earthquakes Reported In Less Than 4 Hours
UPDATED | January 6, 2014 7:40 PM
http://dfw.cbslocal.com/2015/01/06/possible-earthquake-felt-across-metroplex/
I going to check the activity around Yellowstone....
these plates dont exist in isolation,,,,