 A senior science fellow with Nutrien Ag Solutions says the Midwest is officially recovering from a derecho. Eric Snodgrass tells Brownfield, We use that term derecho when we're talking about a storm system that produces damaging winds over at least a 400-mile swath. And that's certainly what we got out of this. As it went through, it produced over 850 reports of severe wind damage, including some tornadoes along with those really strong winds.