Fire tornadoes, more properly called fire whirls, generally form during very intense fires. Eddies, or weak vortices in the wind, may be caught in the rising air current or updraft of the fire. This causes the eddies to stretch, tighten, and intensify into fairly strong vortices, which then pull in smoke and fire.
Only to a limited degree. Meteorologists can predict areas where tornadoes might occur when the conditions for them arise. But there is no telling exactly when and where a storm will produce a tornado.
Fire. While fire can occur naturally, many fires nowadays are started by humans.
a tornado in the form of fire
The "fire tornado" forms from the fire; it doesn't really matter how the fire starts. Also, a "fire tornado" is more properly called a fire whirl as it technically isn't a tornado.
a tornado in the form of fire
Tornado season in Arkansas is in the spring. That encompasses the months of March, April and May, but tornadoes may also occur in any month if conditions are conducive.
Tornado Alley did not occur. It was not an event. Tornado Alley is a region in the central United States.
a tornado can occur at any time of the day or the year
Tornadoes do occur in deserts but they are rare as weather conditions conducive to tornado formation do not happen often in deserts.
It was categorized as tornado alley because it is in the perfect location for tornados to occur. These conditions are: Having warm, humid air for the equator Cold, dry air from Canada and the Rocky Mountains
A "fire tornado" is not a true tornado but a whirlwind spawned by an intense fire. If such a fire is approaching the area where you live you should evacuate immediately.
A tornado would occur in the troposphere, the layer closest to the Earth.