Key to dust devils forming is the increasing difference between high day temps (stable at -30C) and low nite temps (getting colder,now -90C)

and no worries about the dust devils. The thin atmosphere here means they're, um, kinda wimpy. They could clean my panels, tho

awesome!

Oh, that's why we get them in autumn here!

really cool !

wow, thank you for sharing.

So COOL.