Stumbled across this during my day job as editor of several magazines, one of which features a story in its September issue I was just editing that alludes to the 1953 tornado that decimated half the small town of Hebron in Nebraska. I'd never heard of this particular tornadic event before, but this appears to have been quite a devastating event that decimated 50% of the town, left a path of destruction spanning more than 15 miles, and was preceded by "flat" hail stones reported to have been the size of a man's palm.