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 Timmer.