alexander steele is here to explain. how does it happen? >> it is a fire?because of the rotation. let me show you ingredients to the firenado. what happens when you talk about fire and you have seen it with all the fires we have seen in california, they really create their own weather, don't they? what happens, it's at the base of the fires, what we see is an eddy degree created. the fire rises and the temperatures reach hundreds of degrees. as the temperatures warm, the warm air rises and really the key to this firenado is what's here at the base. it's all this dry vegetation. the drought, the heat, all of this plays into the firenados. you can't have all of that without that. so, with all this brush, the dry brush at the bottom, it releases the carbon into the air. what is carbon? combustible. we are going to see it rise, then, it finds oxygen and breathes the life into it. so, take a look at this. this is an animation that was created to give you another picture. what happens, of course, it can be huge. what we have seen in terms of diameter, these thing