Storm Chase USA 2008

The description fits, and it was just ahead of the cold front so was the precursor to the current cold spell. They not something I have seen before. Thanks for the info.

Morning Mike, they look like Nacreous clouds potentially:
What is so special about Nacreous Clouds- mother of pearl Polar Stratospheric Clouds
WWW.NETWEATHER.TV Way up in the Stratosphere there is very cold air above us. It's causing excitement for those who watch such things as a precursor to a possible cold, winter spell. This air can produce Nacreous Clouds PSCs  

Yeah, it's the Alabama Tornado, rated around EF3/4. 

Love that....like a mushroom tornado!

Great stuff Arnie. I shall look forward to this when we get some proper instability.