Technically defined, a tornado is a violent rotating column
in contact with the ground that is attached to a parent
thunderstorm. On a local
scale it is the most destructive of all meteorological phenomena.
Many tornadoes last for
only a few minutes and are on the ground for a few miles.
Other tornadoes can persist for
hours, travel more than a hundred miles, and have a mile wide
In Wyoming, tornadoes are relatively rare compared with the Midwest and Plains states. In central Oklahoma, (the national maximum) tornadoes occur about 20 times more frequently than in the same size area in central Wyoming. Yet certain parts of Wyoming are significantly more prone to these destructive storms than are other parts. In general, the eastern half of the state is more likely to experience tornadoes due mainly to the increase of available moisture at the lower levels of the atmosphere.
Reported Tornadoes by County
|If a tornado
warning is issued for your area you should move immediately to a
substantial building or shelter.
Back to Thunderstorms and Associated Weather Phenomena.
Martner, Brooks E. Wyoming Climate Atlas, University of Nebraska Press 1986.
Lyons, Walter A. Ph.D. The Handy Weather Answer Book,Visible Ink Press, 1997