CNN The Lead With Jake Tapper May 30, 2013 20:04:00
Oklahomans see, or anyone in this part of the country, how often do they see super cells like this? how often do they turn into tornadoes? >> we get a thousand tornadoes in the u.s. on average, some years more some years less. not all of those are super cell thunderstorms. some are made by line echo wave patterns. they're not as big a tornado, ef-0 or ef-1. this is my opinion only, just working in the business for as long as i have, that there are at least 60 days a year out of 365 that would have type of super cell thunderstorm with either a tornado or a hail core producing damage in america....