The research to be presented essentially addresses the question: “What are the radar characteristics of, and differences between the environments which produce severe wind-producing squall lines, bow echoes, supercells, and weakly-organized convective systems over the Northern High Plains?”
Preliminary analyses of this large data set indicate several interesting results. Firstly, a very large percentage of all high wind reports (>85%) originated from organized convective systems (squall lines, bow echoes, and supercell thunderstorms), not isolated downburst or microburst activity. Secondly, of all the storms which were initiated over the Northern High Plains, very few of them (less than 6%) maintained their structure long enough to move east of the study area (i.e. moved out of the Northern High Plains) - inferring that the observed diurnal progression of convection east of the Rocky mountains may be more complicated than previously thought. Thirdly, a distinct ‘corridor’ of severe wind-producing supercell storms was identified. Analyses of these results will be presented.