El-Reno tornado now upgraded to EF5, as it went from 1 mile wide to 2.5 miles wide in 30 seconds...
Also, Radar loop of the tornado/storm system.. Watch the sudden southward surge then return north...
http://wdssii.nssl.noaa.gov/web/wdss2/products/radar/NWRT_20130531_ElReno.gif