What is a fire tornado? 'Extreme fire activity' sparks rare weather warning at Loyalton Fire near Reno. - USA TODAY

Fire tornadoes are formed similarly to tornadoes caused by severe thunderstorms, except extreme heat from a wildfire is the cause. https://www.usatoday.com/story/news/weather/2020/08/16/fire-tornado-loyalton-fire-california-warning/5597082002/