Outrunning a dangerous “derecho” caught on camera in York Nebraska on June 3, 2014. A derecho (from Spanish “straight”) is a widespread, long-lived, straight-line wind storm that is associated with a land-based, fast-moving group of severe thunderstorms. Derechos can produce widespread hurricane force winds and are sometimes accompanied by tornadoes, large destructive hail and heavy rainfall.
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Severe thunderstorms with strong downward wind bursts over a sustained period of time cut through the Midwest on June 3, 2014.
The extent, length and severity of straight-line (nontornadic) wind reports indicate a “derecho.” Straight-line wind gusts exceeding 74 mph were reported in Nebraska in areas including Rock, Washington, Valley, Garden and Gage Counties. Such gusts were also reported in Iowa and some wind gusts were reported to exceed 90 mph. Hail exceeding two inches in diameter was reported in Custer, Antelope, Madison, Stanton, Dodge, Washington, Blaine, Platte, Scott’s Bluff, Morrill, Saunders and Saline Counties in Nebraska. In nearby Iowa, two inch or larger hail was reported in Decatur, Taylor, Ringgold and Page Counties according to SPC reports. Isolated hail reports exceeding four inches were found in Washington, Scott’s Bluff and Morrill Counties in Nebraska.
Tornadoes of unconfirmed intensity were reported in Rock, Valley, Greeley, Thomas, Howard and Custer Counties in Nebraska. Tornadoes were also reported in Pottawattamie County in Iowa according to the SPC.
Reports of downed trees and power lines are widespread, together with light to moderate structural damage as a result of straight-line wind gusts. One truck was reported flipped in Greeley County, Nebraska. A two foot diameter live Maple was reported downed during the storm. There are widespread reports of damage due to downed trees. Hail caused light to moderate structural damage with considerable crop and auto damage according to SPC reports. In Council Bluffs, Iowa, at least 25 vehicles with hail damage were reported along I-29. At least a dozen injuries were reported as a result of hail.
Omaha, Nebraska was subject to flooding due to excessive rainfall, according to reports. Police had to use boats to rescue stranded motorists in the area.The National Weather Service indicated that the heaviest damage was located near the Nebraska-Kansas border in Nemaha County, where at least one home was destroyed and others were damaged.