The Tornadogenesis Phase of a VORTEX2 Supercell on June 7, 2010

Data obtained during the Verification of the Origins of Rotation in Tornadoes EXperiment, Part 2 (VORTEX2) are used to investigate the genesis of a weak (EF1), but rather long-lasting (19-mile length) tornado. The NOAA (NSSL) X-band dual-Polarized (NOXP) and three CSWR Doppler on Wheels (DOW5, DOW6, and DOW7) mobile radars scanned the second of two supercells on 7 June 2010. Attenuation and differential attenuation limit observations of reflectivity and dual-polarization signatures at X-band. The ZPHI Rain-Profiling algorithm and the Gamma technique are applied to mitigate attenuation and differential attenuation in an attempt to correct some of the data and better identify signatures in the supercell thunderstorm. The data are also smoothed through an objective analysis. The structure of the hook echo and mesocyclone during the tornadogenesis phase of this tornadic supercell are observed using single- and dual-Doppler analyses.