Monday, 5 November 2012
Symphony III and Foyer (Loews Vanderbilt Hotel)
On 19 June 2010 two mobile C-band SMART radars collected 110 minutes of dual-Doppler data on a high precipitation tornadic supercell near Concordia, KS. During this period, the supercell underwent three episodes of low-level mesocyclogenesis, each producing a tornadic vortex signature. Single- and dual-Doppler analysis of the third mesocyclone that formed approximately 10-15 km from one of the SMART radars illustrates how surges in the rear-flank downdraft affect the evolution of the low-level mesocyclone, from organization to intensification and later occlusion. These analyses will be represented and compared against other cases with storm-scale wind syntheses to further eludicate the impact of the rear-flank downdraft on the evolution of low-level mesocyclones in supercell thunderstorms.
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