Derecho in Midwest traveled 770 miles in 14 hours, flipped trucks and smashed a grain elevator
Written by kslmadmin on August 11, 2020
The National Weather Service’s (NWS) Storm Prediction Center (SPC) said Tuesday morning that the “intense derecho” traveled from southeast South Dakota all the way to Ohio, a path of 770 miles in 14 hours.
“There’s just destruction throughout the entire community,” Cedar Rapids City Manager Jeff Pomeranz told The Gazette. “This is a very serious event and we’re taking every action to make sure that the city is restored to the best of our ability.”
Estimated winds between 90 t0 100 mph were reported in parts of Iowa as the storm system moved through.
In the town of Linn, multiple campers were reported to have blown over after estimated gusts of over 100 mph. Motorists captured overturned trucks throughout the state.
A grain elevator collapsed in the town of Luther as the derecho blasted east.
According to KCCI-TV, Boone County, where Luther is located, and cities including Ankeny, Johnston, Marshalltown and Perry were one of several areas under a “travel not advised” alert.
“Many communities have significant tree/structural damage. Travel is impassable in some areas. Please stay home and shelter in place so emergency workers can work to restore power,” the NWS said.
Cedar Rapids, Iowa, had “both significant and widespread damage throughout the city,” said public safety spokesman Greg Buelow.
The Cedar Rapids Police Department told KWWL-TV that approximately 50 people went to area hospitals with storm-related injuries. Police and fire crews also responded to some fractures and storm-related calls.
Tens of thousands of people in the metro area were without power after the devasting winds blasted through.
“We have damage to homes and businesses, including siding and roofs damaged,” he said. “Trees and power lines are down throughout the entire city.”
Cedar Rapids on Monday night issued a 10 p.m. curfew that will continue until further notice as crews worked to clean up fallen debris.
The Iowa Department of Transportation said multiple roads across the state were impacted by downed trees, powerlines or overturned trucks.
“Please stay put if you don’t need to travel,” the agency tweeted.
After slamming Iowa, the storm system moved through Chicago and into Indiana and Michigan, causing more damage.
In northern Illinois, the National Weather Service reported a wind gust of 92 mph near Dixon, about 100 miles west of Chicago, and the storm left downed trees and power lines that blocked roadways in Chicago and its suburbs.
Footage posted to Twitter showed part of a roof flying off a building at Lake Shore Drive in Chicago.
After leaving Chicago, the most potent part of the storm system moved over north-central Indiana by late afternoon.
According to power outage tracking site poweroutage.us, over 1.2 million people were initially impacted by the storm system.
That number had dropped to just over 1 million by Tuesday morning.
The states with the greatest number of outages were Illinois, Iowa and Indiana, where many residents reported downed trees.
MidAmerican Energy said nearly 101,000 customers in the Des Moines area were without power after the storm moved through the area
The high winds across Nebraska downed trees and caused a trampoline to fly into one Omaha resident’s backyard.
Omaha Public Power Districts said Tuesday morning that outages are down to 4,500 from a peak of 57,000.
According to the National Oceanic and Atmospheric Administration’s (NOAA) National Severe Storms Laboratory (NSSL), a derecho is a widespread, long-lived wind storm that is associated with a band of rapidly moving showers or thunderstorms.
“Although a derecho can produce destruction similar to that of tornadoes, the damage typically is directed in one direction along a relatively straight swath,” the NSSL states. “As a result, the term ‘straight-line wind damage’ sometimes is used to describe derecho damage.”
In order for a cluster of thunderstorms to be defined as a derecho, a wind damage swath must extend for more than 240 miles and include wind gusts of at least 58 mph along most of its length.
“This is our version of a hurricane,” Northern Illinois University meteorology professor Victor Gensini told the Associated Press.
While a derecho doesn’t have an eye like a hurricane and its winds come across in a line, the damage it does is likely to spread out over a large area like a hurricane, as opposed to localized impacts from a tornado.
He said Monday’s derecho will go down as one of the strongest in recent history and be one of the nation’s worst weather events of 2020.
The storms on Monday can be compared to the devastating Super Derecho of 2009, which was one of the strongest on record and traveled more than 1,000 miles in 24 hours, causing $500 million in damage, widespread power outages, and killing a handful of people.
The Associated Press contributed to this report.
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