Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Tornadoes and other Weather topics.
Tornadoes are usually associated with heavy thunderstorm activity and occur only under very special environmental conditions.
For a twister to form the surrounding air must be moist enough to support the building thunderstorm; the lower layers of air must slowly be turning or rotating; the surrounding atmosphere must be highly unstable; and there should be a strong jet stream aloft.
When all of these factors combine in just the right sequence, a tornado may form.
Tornadoes can also accompany tropical storms and hurricanes as they move onto land.