What is a Tornado?

A tornado is a whirlwind produced by atmospheric conditions, mainly extremely low pressure, during a severe thunderstorm.They appear as funnel shaped columns of violently rotating winds that reach down from a storm and touch the ground.

The tornado is one of the most unpredictable and destructive forces of nature, often destroying everything in its path. A tornado is usually preceded by severe storms, which may include lightning, high winds, and frequently hail.