Leigh Orf's computer simulation of the 2011 El Reno EF5 multiple vortex tornado bears a striking resemblance to drone footage of the #Greenfield Iowa tornado. See the high resolution version of Orf's work at https://t.co/mscka44FSg #IAwx https://t.co/SmvMPH2X6H

Check out this whip-like vortex in the #tornado south of Greenfield, Iowa with @theScantman on the controls. Full 4K video is on YT WATCH: https://t.co/SQHq4Cwmwg https://t.co/FyBbaHxUuV - Reed Timmer, PhD

UW-Madison CIMSS

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