Tornado Warned supercell south of Ft. Morgan, CO 6/6/10. There was a report of a tornado touchdown but from our vantage point we did not see it. We sat on this storm for about 2 hours. The first part of the video is of the rotating base and wall cloud. the second part of the video shows the back side of the storm with mammatus and lots of lightning. The last few frames of the time lapse is of a second supercell that moved in behind the first storm. Notice the cork screw appearance to the updraft tower.