On the way from intercepting the Faith HP hail machine toward intercepting another right-moving hail producer near Rapid City, my own course got intercepted. This storm formed to the south of the most direct route, evolved into a left-moving, elongated, anticyclonic supercell, and traveled northeastward across the best course. It also produced a large area of outflow that crippled, but did not kill, the Rapid City storm as the latter traveled further southeast toward the Badlands. In the meantime, on a network of long dirt roads that get rather slick in rain, I had to deal with this somewhat annoying, yet beautiful and interesting storm that got in the way—certainly an attention-grabber. The left-mover actually produced a modestly clockwise-rotating wall cloud (lower right) for a short time, before the entire convective area started getting undercut by both its own outflow and that flung far southwestward by the hail machine.
Elm Springs SD (4 Jun 20) Looking WSW
44.3055, -102.5288