There are five large wildfires in Wyoming, with many smaller fires still not 100% contained. This amounts to about 270,000 acres burning. Here is a video of a few 'fire-nadoes' that were captured on video.

A 'fire-nado' is a whirlwind induced by a fire and often (at least partially) composed of flame or ash. These start with a whirl of wind, often made visible by smoke, and may occur when intense rising heat and turbulent wind conditions combine to form whirling eddies of air. These eddies can contract to a tornado-like vortex that sucks in debris and combustible gases.