8-10-2020 WHO-TV Des Moines Midwest Derecho Coverage

Widespread, destructive straight line winds blew across central Iowa during the day on August 10, 2020. The highest official wind gusts measured was 99 mph at the Marshalltown Airport with an unofficial wind gust of 106 mph at Le Grand (east of Marshalltown). The strongest winds were between the Highway 30 and Interstate 80 corridor (including, but not limited to the Des Moines metro, Ames, Newton, Marshalltown, Tama/Toledo, Carroll) from central Iowa eastward into east central Iowa and northern Illinois.