When all these factors are in place, a vortex is surrounded by a storm, forming a wide

When all these things are in place,a vortex can develop enclosed by the storm,and forming a wide, tall tube of spinning air that then gets pulled upwards.We call this a mesocyclone.Outside, cool, dry, sinking air starts to wrap around the back of this mesocyclone,forming what's known as a rear flank downdraft.This unusual scenario creates a stark temperature difference between the air inside the mesocyclone,
and the air outside,building up a level of instability that allows a tornado to thrive.