This is being nicknamed a "coalnado" -- happening at a coal mine in Elkhorn, WV. Very similar to a dust devil -- it's a dust/dirt-filled vortice, created by strong heating at the ground. Interesting video!📽️: Randy Walters #wvwx pic.twitter.com/TwExjZEtj3

— Meredith Garofalo (@GarofaloWX) July 30, 2019