CNN Anderson Cooper 360 June 5, 2013 05:04:00
Well. chad myers is in el reno now, joins us. the tornado was upgraded today from an ef3 to an ef5. that really caught me by surprise. does that mean in terms of power? i mean, why was it upgraded? >> reporter: because doppler on wheels, scientists, storm chasers that we talk so much about, two teams of scientists with doppler on the back of pickup trucks spinning around found wind speeds of almost 300 miles per hour. now, those winds never hit anything. so we don't have houses that are missing because there's so much empty space here. but what we know, anderson, think about this. think about ...