This was a strong thunderstorm from the summer of 2014. At the time it was impossible to fully grasp and analyze the many motions within the cumulonimbus cloud. This storm was still developing and it was passing directly overhead. The main updraft was exploding resulting in knuckles of vorticity around the strong wind. These knuckles could join and form a ring if we were able to visualize all of the details. I will draw a few lines of explanation to show that thunderstorms can actually be understood and they are not as chaotic as they might appear. I think the updraft is strongly tilted forward along the direction of travel. This is because of the sign of the vorticity and the darkest part of the cloud. I do not recall if this storm caused any damage but it certainly could have been a severe supercell.
http://fineartamerica.com/featured/under-the-storm-phil-chadwick.htmlhttp://fineartamerica.com/blogs/1549-under-the-storm.html
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