I've come across another awesome timelapse, this time coming from Chad Cowan who runs the site ChasetheStorms.com. Below is the video of the supercell thunderstorm marching through the Plains in Kansas back on May 21, 2011. The link to the full size video is here and his vimeo account which has other videos of chases is here. As you can tell I just love timelapse weather photography, so if you ever come across any nice videos or if you have one you'd like me to share, let me know! Send me a tweet to @alexliggitt or an email at firstname.lastname@example.org.
As I always like to give full credit to these photographers for their awesome work, you can find him on Facebook here and on Twitter here to follow him. It turns out Chad is also a tour director for Extreme Tornado Tours. Hey Chad, I'd love to come out for a chase sometime!