Krazy Clouds

I was just finishing up a shoot when Geoff called and said, "Do you have a camera on you?" Before I could answer he said, "You need to get some shots of these clouds!!"
When I saw the clouds, my first thought was tornado- it always is when I see an ominous looking sky. Geoff later informed me that the could that rolled through Omaha yesterday, a little after 7pm, was a shelf cloud. I couldn't get ahead of the cloud because it was moving so fast, but I managed to get a couple shots from the zoo parking lot.