![]() ![]() ![]() Two tornadoes were also confirmed within the widespread swath of wind damage, Both have been designated as EF-U (unknown), as there was no observable damage directly attributable to the tornadoes from which an EF-scale rating could be assigned.Ī derecho of this intensity is a roughly once-in-a-decade occurrence in this region. The maximum measured unofficial wind gust was 126 mph at Atkins, Iowa in Benton County. Maximum estimated winds were around 140 mph, which caused extensive damage to an apartment complex in southwest Cedar Rapids, IA. A swath of damage from Benton County, through portions of Linn, Jones, Cedar, and Clinton Counties, is consistent with intermittent straight line winds in the 100-130 mph range. A powerful line of severe thunderstorms known as a " Derecho" tracked across eastern Iowa and northwest Illinois on the afternoon of Monday, August 10th resulting in widespread straight line wind damage. ![]()
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