The first 4 images are of the shelf cloud on the east southeast side of the supercell thunderstorm. It is almost obscured, but can be seen by the "line-like" formation within the clouds.      The next two images are of a curious phenomena within the wall cloud itself. An opening resembling an inverted drainhole appeared, image 5, then after a short time filled in, image 6. Having only seen this cloud formation about 2 times previous, though not this close, I can only hypothesize that this is an area of updraft primed to produce a tornado, which it didn't.      The last image shows a lowering which briefly appeared from the wall cloud.      Story Page      Mammatus clouds      Inflow jets      Gustnadoes      Funnel/Tornado