This study uses data collected by KTLX and KOUN WSR-88D S-band radars as well as the University of Oklahoma’s Advanced Radar Research Center’s OU-PRIME C-band radar to construct single- and dual-Doppler analyses of a tornadic supercell that simultaneously produced an EF-4 and an EF-2 tornado near Norman, OK on 10 May 2010. The dataset contains two TDSs in close proximity to one another that merge into the same parent updraft aloft, and eventually merge into one large TDS. Both TDSs exhibit asymmetric structure but with contrasting polarimetric characteristics. The objective of this study is to relate the spatial distribution of the polarimetric radar variables to kinematic fields in order to elucidate the formation mechanisms of asymmetries in the two TDSs and to examine how debris are lofted and transported by the storm-scale updraft. Among the analyses will be forward debris trajectories using the dual-Doppler wind fields, which are used to recreate TDS structure and interrogate storm-scale debris sedimentation.
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