Tornadoes are a product of severe thunderstorms usually found where a warm, moist air mass collides with either a cooler air mass or a dry air mass.
No, a tornado cannot form without a thunderstorm. A tornado needs the crossing winds of two air masses to provide rotation in order for a tornado to form. Tornadoes do not form from convection thunderstorms, but only from air mass thunderstorms.
The cool air sinks, while the warm air rises. If it does so with enough force and torque, a tornado or hurricane will form.
The colliding air masses in Tornado Alley are warm, moist air from the Gulf of Mexico, cool air from Canada, and dry air from the Rockies. This collision is just part of the recipe for tornadoes.
Continental air masses form in the United States
A Tornado A Front.
In Tornado Alley Warm moist air from the Gulf of Mexico meets with dry air masses from the Rockies and/or cool air masses from Canada. These collisions can produce violent thunderstorms that can sometimes produce tornadoes. See the related question below for more detail.
it is a tornado
Tornadoes cannot form in space. A tornado is a vortex of air. There is no air in space.
continental air masses
they are over land
they are over land
why is the united states not a great place for air masses to form