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
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.