Sky Diary 31 May 2013 El Reno, Oklahoma, tornado - 2013-05-31 at 17-57-24

Caption: Without being close to it, it was difficult to see the development of the wall cloud and tornado. I have mixed feelings, knowing what happened later. Photo by Chris Kridler, SkyDiary.com, ChrisKridler.com
Aperture: ƒ/5
Shutter Speed: 1/100
Date: 5/31/13 5:57:24 PM CDT