photo by: Nick Krug

What is left of an outbuilding lies strewn about, removed from its foundation, in a field south of Williamstown Monday, April 4, 2011.

photo by: Nick Krug

Gordon Michels of Midwest Irrigation Systems Inc., left, and Mark Gantz, neighbor, survey the damage done to an irrigation pivot just north of Williamstown Monday, April 4, 2011. Experts are calling the storm, which damaged various properties around the area, a "gustnado."

photo by: Nick Krug

Gordon Michels of Midwest Irrigation Systems Inc. surveys the damage done to an irrigation pivot just north of Williamstown Monday, April 4, 2011. Experts are calling the storm, which damaged various properties around the area, a "gustnado."