Most tornadoes happen in the spring and summer months.
Tornadoes never strike the same location twice.
The shape and size of a tornado determines how strong it is.
Tornadoes are violently rotating columns of air stretching from a cloud to the ground.
More tornadoes happen in North American than anywhere else in the world.
Warm air masses rise under cold air masses.
A mesocyclone is a large mass of rotating air.
Tornadoes won't cross over rivers or other bodies of water.
Tornadoes pick up debris along their path.
The widest tornado on record was almost 3 miles wide.