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El Reno Tornado
Yarnell Hill Fire El Reno Tornado Storm Safety Tracking













Memorial site location for Tim Samaras, Paul Samaras and Carl Young.

On May 31, 2013 a large and dangerous tornado overtook the position of these seasoned storm chasers.















Looking south from the memorial location was open fields.  The tornado ratings are based on damage indicators which were few in the area of the tornado that rapidly grew in size to 2.6 miles wide.  The vortex hole, largest seen to date, as seen in Dual Doppler radar also shows that is was 3.3 miles long.  The damage found for this tornado only allowed for an EF-3 rating but radar data clearly indicates this was more likely on EF-5 tornado.  Future work is needed to allow for better classification of tornadoes in open country.


















The radar sequence above shows the hail core that rose to 40,000 feet and elongated down range 8 miles.  The hail core rapidly collapsed within very few radar volume scans.  The tornado was initially pushed southeast and then rapidly enlarged as it returned back to a northeast direction.














Vortex hole as shown above using the correlation coefficient from the Dual Doppler Radar data.  The blue edges is debris indicators.  The tornado was measured at 2.6 miles wide.  The debris hole was also 3.3 miles long on the path it was following and as shown was drawn up 20,000 feet.















Normalized Rotation above circulating around the vortex hole as it crosses the highway between El Reno and Union City.  The foreground anti-cyclonic circulation which is the green elongated section between Union City and the Tornado was dragged down to the ground as the tornado rapidly moved east while expanding.




Copyright 2011 - 2016 by Tom Dolan. All rights reserved. Federal copyright law prohibits unauthorized reproduction.


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Last modified: 05/10/19