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A shelf cloud along the leading edge of a derecho in Minnesota Damage caused by a derecho in Barga, Italy. A derecho (/ ˈ d ɛ r ə tʃ oʊ /, from Spanish: derecho [deˈɾetʃo], 'straight') [1] is a widespread, long-lived, straight-line wind storm that is associated with a fast-moving group of severe thunderstorms known as a mesoscale ...
The derecho caused notably high wind speeds of up to 126 mph (203 km/h) recorded in Iowa, with post-damage assessments of up to 140 mph (230 km/h) in some places. The derecho also spawned an outbreak of weak tornadoes, and resulted in an estimated $11 billion of damage. In addition, certain areas reported torrential rain and large hail. [69]