I've lived in the Buffalo area all of my life. We're known for snow and cold winters, but I've never seen one of these. I've never even heard of one -- a snow roller.

They're pretty rare. A certain set of circumstances have to be in place for them to happen, but conditions were perfect in some areas of Ohio yesterday.

It was the lead item on some newscasts in some Ohio cities. Check out the video -- it gives a pretty good explanation of what they are and how they're formed.