Mivel függ az össze, hogy az USA-ban szinte mindig a keleti parton van tornádó?

the three key ingredients necessary for the kind of severe thunderstorm that can produce tornadoes:

1. Warm, moist air at low levels

2. Cool, dry air aloft

3. Horizontal winds that increase with height from the ground-up—and change direction, so that they blow from the equator at low levels, and from the west aloft.

The United States sees all three of those ingredients. To paraphrase Brooks:

1. Winds out of the South bring warm, moist air from the Gulf at low levels over the eastern half of the United States.

2. Winds out of the West bring air over the Rocky Mountains and High Desert of the Southwest, making that air dry and cool aloft.

3. Because of the Earth’s rotation, the winds are almost always aloft coming out of the West.

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