This picture was taken by Sean Heavey, an amateur photographer.
He witnessed this cloud in July, in Glasgow, Montana, USA..
Now there is nothing I enjoy more than taking pictures of the sky..But if I saw this coming at me, I would be history. It is terrifying.
Bless Mr. Heavey and his camera, for if it was me, I would be in my cellar, saying a few prayers.
Till next time, keep looking up...