Cyclonic vortex signatures are indicated by solid black, blue, and red circles in (a), black in (b), and dotted black circle in (c) anticyclonic vortex signatures/TVSs are indicated by solid white circles in all panels. Doppler velocity from the MWR-05XP at 1° elevation angle at the times indicated in UTC on 24 May. The behavior of the cyclonic mesocyclone/tornado and mesoanticyclone/tornado in the later Ellis, KS, supercell on. The approximate center beam height at the location of the anticyclonic vortex signatures are (a) 280, (b) 300, (c) 320, and (d) 330 m AGL. The maximum Δ V in m s −1 is indicated next to each vortex signature/TVS. Rotation of anticyclonic vortex signature (white dashed circle) about a cyclonic tornadic vortex signature (white solid circle) on for the Ellis, KS, supercell. No data were available for analysis during 0031–0036 UTC. A total of 25 ( n) measurements were made. The formation of the anticyclonic tornado near El Reno, OK, on as depicted by a measure of the gate-to-gate shear (Δ V) as a function of time (UTC on 25 Apr) and height AGL (km). The solid (dashed) black circles mark the locations of the cyclonic-shear (anticyclonic shear) signatures/TVSs the curved red line marks the approximate location of the leading edge of the RFGF determined from the 0 m s −1 isodop. The dissipation of the cyclonic tornado and formation of the anticyclonic tornado near El Reno, OK, on as depicted by TOKC TDWR Doppler velocity data (m s −1, color scale at the top of each panel) at low altitude, ~450 m ARL. Stumpf, Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma.) Square sections are 1 mi (1.6 km) along each side. (a) Broad view of the damage tracks (courtesy of the National Weather Service Forecast Office in Norman, OK) of the cyclonic (northernmost track) and anticyclonic (southernmost track) tornadoes near El Reno on, and (b) close-up view of the damage track of the anticyclonic tornado the El Reno Regional Airport is at the leftmost section of the damage track. ![]() ![]() 1d) and (e) the dissipating stage of the tornado. ![]() 1c) (b) close-up view of the tornado as it is hitting the El Reno Regional Airport (c) as in (b), but when the tornado is damaging the hangar at the airport (d) the mature stage of the tornado (cf. ![]() England), looking to the west/west-southwest. Bluestein.)įrame captures from a video of the anticyclonic tornado just south of El Reno, OK, on, as taken from the KWTV Oklahoma City helicopter by M. The photographs were taken ~3–3.5 mi (~5–5.5 km) from the anticyclonic tornado and ~6–7 mi (9.5–11 km) from the cyclonic tornado. (a) Cyclonic tornado at ~0025 UTC, (b) dissipating cyclonic tornado and clear slot (right arrow) and funnel cloud of developing anticyclonic tornado (left arrow) at 0031 UTC, (c) remnant of funnel cloud of cyclonic tornado (right arrow) and anticyclonic tornado (left arrow) at 0037 UTC, and (d) mature anticyclonic tornado at 0038 UTC. View is to the west from a location ~0.5 km south of I-40 on Highway 81. Photographs of tornadoes just south of El Reno, OK, on at the times in UTC indicated (local time is 5 h earlier, on 24 Apr).
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