Why do tornadoes form mostly in the Great Plains state?

Answer 1

The Great Plains are where cool, dry air meets warm, moist air This triggers the formation of thunderstorms that then interact with wind shear, which is also common in that region, to start rotating. The rotation within these storms can then produce a tornado.

Another factor on the Great Plain is something called a cap. The cap only lets the strongest storms develop so that they don't have to compete with weaker storms for energy. This allows them to grow even stronger.
The Great Plains see a high frequency of tornadoes because of their ideal climatic setup. In the spring storm systems cause warm, moist air from the Gulf of Mexico to collide with cool air from Canada and dry air from the Rockies, resulting in the formation of strong thunderstorms. About a mile off the ground a layer of stable air holds thunderstorm activity back, allowing instability to build underneath it. As a result when the storm break through the cap the instability will be enormous, leading to explosively powerful thunderstorms. At the same time wind speed and direction varies with altitude, which sets these storms rotating and also strengthens the updraft. This rotation combined with strong thunderstorm updrafts can then produce tornadoes.

Answer 2

Tornadoes form mostly in the Great Plains states, such as Oklahoma, Kansas, and Texas, due to a combination of warm, moist air from the Gulf of Mexico colliding with cool, dry air from Canada. The flat terrain and weather patterns in this region create the perfect environment for severe thunderstorms to develop, which can spawn tornadoes.

Answer 3

One likely reason tornadoes are so common in the central U.S is because this is where Arctic air, cold fronts that have not been "weakened" yet first collide with warm tropical air from the Gulf of Mexico. ... For this reason, tornadoes are not as common on the East Coast as they are in the Midwest.