Cody – here are two links to the same movie, two different formats. I took out some of the text annotations so you could use whatever segment you want. For some background, see this talk that I gave last week (my part starts at 13:14). This is the same movie I am providing for you.
Also, here is an official weather service link concerning the Fairdale, IL tornado that happened last week: http://www.weather.gov/lot/15apr09