A fast-moving derecho or wind storm moved rapidly across Iowa, Illinois and Indiana on Monday causing millions of dollars in damages.

Dennis Todey heads up the Midwest Climate Hub in Ames Iowa and says it lasted a long time and took a long path..

Todey says a derecho can sustain itself for quite a while….

Todey says it is hard to predict the formation of these wind storms….D

State officials say at least ten million acres of Iowa crops were severely damaged.