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Tornadoes: How They Form

Tornadoes: How They Form

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Item Number:
NDM 23767
15 min.
Closed Caption:
New Dimension Media
Why is the southern Middle West part of the United States particularly prone to violent storms called tornadoes? In spring, the collisions of still frigid winds from Canada with the warm upwelling breezes from the Gulf of Mexico create thunderstorms. If these collisions accelerate, "super cells" of even faster rotations occur, creating more upwelling and circulating, with hail, and then funnels of wind, culminating in a chain reaction. This process is clearly demonstrated by descriptions underpinned with computer graphic images and live-action footage blasting before our eyes.

Series Name:
    Earth In The Universe Series, The

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