According to the National Oceanographic and Atmospheric Administration, tornadoes form when warm air creates a rotating updraft in a powerful thunderstorm. When winds blow in sharply different directions or at different ... More »

Fire tornadoes form when combustible gases ignite in windy conditions. According to the Mother Nature Network, most fire tornadoes spawn from wildfires. The center of a fire tornado is a column of flaming gas up to 9 fee... More »

A tornado is a violently swirling column of air that forms at the base of a thunderstorm. When the tornado is visible, it's because the air gathered up water droplets, dust particles and debris. It is a destructive force... More »

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Tornadoes are narrow, circulating columns of air that originate from a supercell thunderstorm, from the cloud to the ground, and constantly become darker as they pick up dirt and debris from the ground. Tornadoes move at... More »

Tornadoes form out of thunderstorms, where moist air rises, cools and condenses into clouds that release heat and force cooler air back down. If the updrafts are strong enough, the feedback loop forms an air vortex that ... More »

Tornadoes form when unstable air in a thunderstorm creates a horizontal rotation in the clouds and strong downdrafts draw that vortex down to the ground. Overlapping fronts can trigger the wind shear necessary to initiat... More »

Most tornadoes are created as a result of thunderstorms that form at the meeting point between humid air from the Gulf of Mexico and dry, cooler air from Canada. At that point, instability occurs in the atmosphere, and a... More »