Fire tornadoes, fire whirls, fire devils, creepy spiral fire finger shooting up from the ground, whatever you call it, a fire whirl is a freaky phenomenon. They are upside down tornadoes that whip fire around instead of air. However, they are caused by air currents, but the obviously necessary ingredient is fire. These little devils can be more than 3,000 feet tall, spin at about 100 miles per hour and last for up to 20 minutes. Don't worry, though. That is only the worst-case scenario and you have to be caught in a heck of a wildfire to experience something like that.
Just to convince you to stay away from large fires, as if you needed convincing: