Here's the vid.
And here's a photostream of the events.
The video is a little blurry but you can make out the Jet engines used to simulate the tornado. It's pretty cool to see Pa Kent walk in the direction of the storm while everyone else runs away. That scene really captures where Clark gets his heroic nature from. I also personally love how the guy camped out in the bushes and narrated the whole thing like an Animal Planet special.
Man of Steel is an upcoming American superhero film under the development of Zack Snyder, Christopher Nolan, and David S. Goyer. Based on the DC Comics character Superman, the film will be a reboot of the Superman film series. Using Chicago as a backdrop, and with production to be based in west suburban Plano, the film entered principal photography in August 2011, for a planned theatrical release on June 14, 2013 by Warner Bros., which also includes IMAX venues.