A few boundaries, good shear and adequate moisture would allow supercells to develop in northeast Colorado and western Nebraska. We first targeted a supercell and complex northeast of Alliance, but when we saw it was a left split we blew it off (mistake as it produced tornadoes!). The storms in Colorado were quite outflow dominant, except for the third supercell which was a respectable classic supercell near Yuma. The Colorado storms never produced tornadoes, but did have nice structure, lots of lightning and hail to baseball size.

2006, Colorado, hail, June 2006, lightning, supercell, tornado