CNN Piers Morgan Live June 1, 2013 01:20:00
All at the same time and created these big super cell thunderstorms. it was so hot, there was so much fuel that these storms are still using that fuel, still using that 94 degree air although its cooled off some. this is just a day where the atmosphere was explosive. the storm west of el reno that we watched went from zero, nothing, to 56,000 feet in about 20 minutes. so this storm went from a cloud to ten miles high in less than a quarter, you know, quarter of an hour to 20 minutes. it was the ...
Source: archive.org