A tornado is a violent whirling wind that moves across the ground in a narrow direction when the updraft in a convection cell is really strong the air rushes in from all sides at high speeds.
The air curves into a spin, this lowers the air pressure.
As the tornado gets stronger a funnel forms that eventually touches the ground winds can reach up to 300 mph in the center of a tornado
This is most likely to happen in the great plains region