Webinar #78 - Thursday, September 9, 2021
"Derechos: Nature’s Wall of Wind" Walker S. Ashley Northern Illinois University Geographic and Atmospheric Sciences DeKalb. IL ![](https://media.cocorahs.org/images/ashley-walker.jpg)
Biography
Thunderstorm generated windstorms occur over broad spatial and temporal scales; however, the more widespread and longer-lived of these windstorms are known as “derechos”. This talk will define derechos and their different types, reveal the interesting origin and history of the term derecho, provide a climatological overview of these extreme events, and illustrate the impacts these windstorms can have on communities by examining a few noteworthy events. We will also examine the unique visual and radar characteristics of thunderstorm systems that produce derechos. We will conclude with a discussion of how climate change may affect derechos and their parent thunderstorm systems in the 21st century.
![](https://media.cocorahs.org/images/AshleyScreen200.png) View the Webinar by clicking here: https://youtu.be/4tpo4Zf07zk
View Walker's presentation slides
Resources:
SPC About Derechos: https://www.spc.noaa.gov/misc/AbtDerechos/derechofacts.htm Ted Fujita documentary: https://www.pbs.org/video/mr-tornado-upsuu9/ Walker's homepage: http://chubasco.niu.edu/ Walker's Twitter (post a lot of timelapses): https://twitter.com/WalkerSAshley
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