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Organizers in Wisconsin postponed the biggest air show in the U.S. as a severe storm system threatened the Midwest with potentially hurricane-force winds, tornados, hail and thunderstorms overnight.
Threat level: More than 5.9 million people could be affected by the storm system — which saw the EAA AirVenture in Oshkosh, Wisconsin, postpone events due to be held Wednesday until the following evening amid the threat of 90 mph winds.
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— NWS Storm Prediction Center (@NWSSPC) July 29, 2021
Storms moving through southern Wisconsin were bringing "damaging winds along the line" and the threat of tornadoes in the southeast of the state on Thursday morning, according to the NWS.
"Thunderstorms associated with wind damage and a risk for a tornado, will be possible from the Ohio Valley, central Appalachians and Mid-Atlantic states on Thursday," the National Weather Service's Storm Prediction Center said early Thursday.
The big picture: The latest in a series of heat waves that was bringing extremely hot temperatures to the Central U.S. Wednesday contributed to the severe storm system in the Midwest, per Axios' Andrew Freedman.
Such weather patterns often lead to so-called derecho events, characterized by an organized group of severe thunderstorms that brings damaging straight-line winds across long distances, Freedman notes.
Editor's note: This article has been updated with new details throughout.
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