In an attempt to leverage study results and test hypotheses outlined above, a number of tornadic and non-tornadic supercell cases were evaluated. While previous field studies were conducted in specific geographical regions of the United States, this study has looked at a broad array of cases east of the Rocky Mountains, in an effort to find a unified, geographically independent approach to using dual-polarization radar fields for better discrimination between tornadic and non-tornadic storms in the warning decision-making process. Applicable findings center on the separation characteristics between ZDR and KDP areal maxima in the forward flank, as well as Z/ZDR relationships in the ZDR arc region.
A new initiative on dual-polarization signatures in the hook echo regions of supercells will also be introduced, with initial results presented. These include identifying probable drop size distributions by looking at ZDR and CC in various sectors of the hook echo. The characters and patterns of such drop size distributions will be used to infer information about possible descending heavy precipitation cores (which may increase the likelihood of generating additional vortex lines), as well as the thermodynamic/buoyancy characteristics of rear-flank downdrafts.