On Aug. 10-11, 2020, a derecho swept across the Plains, producing widespread high, straight-line winds; extreme, torrential rain and hail; and an outbreak of weak tornadoes.
The storm killed at least four and left behind significant damage in agricultural areas along a 750-mile path. In fact, its estimated $7.5 billion toll made it the most damaging thunderstorm event in American history.
It was also largely unnoticed outside the Corn Belt at a time when the presidential election, pandemic and racial unrest were dominating the news.
