Date and Location:
May 22, 2011
Dane County, Wisconsin

How this Photo was Taken:
“I was out on a farm with a photography club for the purpose of photographing farm life -- animals, barns, etc. I saw this impressive thunderstorm building several miles to the east of where we were and ended up focusing on that while the others in the group continued to follow the goats and horses around. This is one of many examples of how a completely unplanned photo wound up being among my best photos.

The storm cell dropped 1-3/4 inch hail near Sun Prairie. Fall streaks barely visible under the right side of the anvil may in fact be the falling hail.”

About Photographer Grant W. Petty:
Grant W. Petty is a Professor of Atmospheric Science at the University of Wisconsin - Madison

This photo was submitted as part of the GPM Extreme Weather Photo Contest