Whirlwind

Freelance Linguistic Services

Below is a video of a Whirlwind, also known as a "Dust Devil", that was captured on May 19, 2006 at the National Eskimo Dog Agility Competition in Logan, Utah.

Video of Whirlwind at Dog Agility Trial in Logan, Utah
Utah Whirlwind	Click here to watch a 20 foot, 70 lbs Dog Agility tunnel dance in the air in the middle of a Whirlwind. Watch the Whirlwind then ravage the officials tent.

About Whirlwinds:

There is another type of whirlwind that is frequently observed, but without the devastating consequences of the tornado. Dust devils develop wherever intense surface heating occurs over a relatively small area. They can be seen over a dusty field in the summer or swirling leaves in little counter-clockwise circles on an autumn day. They are not associated with any cloud form. Like the tornado however, dust devils have low atmospheric pressure at the center. They can vary in height from a few feet to as much as several hundred feet, while the counterclockwise winds in the vortex range from 10 to 50 mph. These mini low pressure systems are guided by the prevailing winds and topography of the area. A dust devil can spin as long as an hour under certain conditions before dissipating.

(source: http://pao.cnmoc.navy.mil/pao/Educate/WeatherTalk2/indextornadoe.htm)