Mobile, dual-Doppler analysis of tornadogenesis: The 15 May 2003 supercell in Shamrock, Texas

During the evening of 15 May 2003, a dual-Doppler dataset was collected, at a low elevation angle, through a supercell in the Texas Panhandle (near Shamrock) using the U. Mass., mobile, X-band radar and the SMART-R, mobile, C-band radar. The former also collected dual-polarization data. During the time data were collected, a tornado formed approximately 15 km (20 km) away from the U. Mass. (SMART-R) radar. Data collection began 20 minutes prior to tornadogenesis and continued through the lifetime of the tornado. This dataset allows a unique look at the wind field during tornadogenesis. The results of this analysis will be presented.