What Is a Derecho? (Hint: It's a Highly Destructive Force of Nature)Adrian Covert7/12/11 6:32pm1802EditInvite manuallyPromoteDismissUndismissBlock for io9HideYou're in the middle of a midwestern field right now. You feel a warm breeze gathering. Then wall of clouds starts heading in your direction. The wind gets stronger. Then a thunderstorm comes out of nowhere.