CNN The Situation Room May 21, 2013 22:54:00
Well over 10,000 feet deep. up here where it's rotating this way, it's what we call a mesocyclone. the tornado is usually within that larger rotation. this is a much broader rotation. whereas the tornado is a smaller feature within that mesocyclone rotating much more rapidly. that's what does all the damage at the ground is that tornado. >> the stuff out here obviously is going to be the first stuff to hit the ground. it will stay up in the air. any estimation of how long before it comes down, how long it will travel? >> larger chumpnks of debris te to fall up to a half mile or mile from where...
Source: archive.org