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Often, but not always, tornadoes form when three different airs masses collide. The first, and probably most important, is a warm, moist air mass from the Gulf of Mexico. Next comes a cool air mass from northern Canada, and finally a dry air mass from the Rockies. When the collision occurs the warm, moist air mass essentially becomes fuel for very strong thunderstorms. Given a few other factors these storms can produce tornadoes.

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Q: When tornadoes form in north America where does the air come from?
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Related questions

Where in north America do tornadoes form?

Tornadoes can form almost anywhere in North America but occur most often on the central plains of the United States.


Where do most tornadoes in North America form?

tornado alley in the Midwest which Texas has the most tornadoes on average


Do tornadoes only form in North America?

Yes, tornadoes can happen almost anywhere that there are thunderstorms.


Is various form of energy from tornadoes?

No it does not come from tornadoes . :] .....


Do tornadoes come form clouds?

Yes. Tornadoes form from the clouds of a thunderstorm.


Where does red salmon come from?

north America form some tribe :P


Can tornadoes come together to form a big tornado?

Yes. It is possible for tornadoes to merge and form a larger tornado, though this is a fairly rare occurrence.


What can tornadoes come from?

Tornadoes come from thunderstorms, usually, powerful rotating storms called supercells. However, tornadoes can sometimes form with squall lines, hurricanes, and in rare cases, single cell storms.


Do tornadoes come from inside the earth?

No. Tornadoes come from thunderstorms, which form in the air. The tornado itself starts forming several thousand feet above the ground.


Do tornadoes only form in warm areas?

No. While tornadoes are more common in warm areas, they have been spotted as far north as Alaska.


Do tornadose come from the earth?

Nope... tornadoes form from clouds - usually thunderclouds.


Does a tornado come from the ocean?

Not usually. Most tornadoes form over land.