How do tornaodes form? - KTRE.com | Lufkin and Nacogdoches, Texas

How do tornaodes form?

  • Before thunderstorms develop, a change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere.

 

  • Rising air within the thunderstorm updraft tilts the rotating air from horizontal to vertical.

 

  • An area of rotation, 2-6 miles wide, now extends through much of the storm.  Most strong and violent tornadoes from within this area of strong rotation.
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