--Original Posting Below--
There are reports of three dozen injured in the tornado.
Here it is at its formation. If you listen carefully, you can hear the "waterfall" sound associated with tornadoes.
And, here it is a few minutes later. You can see the tornado throwing trees and, again, the waterfall sound.
-- Additional Video --
Here, the tornado has matured into what storm chasers call a "wedge" which means there is a low cloud base and it is at least as wide at the bottom as it is at the top. For a moment, the sound is more of a roar. You will also be able to see the result of the tornado hitting electrical transmission lines.
The video below is from my AccuWeather colleague, Reed Timer.