I snapped this while taking my kids to school on 11/15/19 at about 7:15am from Denver, Colorado looking West towards the mountains. It was quite a large formation that hardly moved at all, so I do not think it was smoke. There appeared to be two of the same formations but it was hard to tell if one was on top of the other or if one was further away--weird. It was pretty chilly, 30's. What do you think this was? Thanks for taking a look.

Regards, Rebecca