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Weak tornadoes, or strong yet dissipating tornadoes, can be exceedingly narrow, sometimes only a few feet or couple meters across. One tornado was reported to have a damage path only 7 feet (2.1 m) long. [28] On the other end of the spectrum, wedge tornadoes can have a damage path a mile (1.6 km) wide or more.
A tornado is a violently rotating column of air in contact with the surface and a cumuliform cloud base. Tornado formation is caused by the stretching and aggregating/merging of environmental and/or storm-induced vorticity that tightens into an intense vortex. There are various ways this may come about and thus various forms and sub-forms of ...
Tornadoes can occur anywhere in the U.S., according to the National Weather Service.Tornadoes are “most common in the central plains east of the Rocky Mountains and west of the Appalachians.”
Nor'easters, European wind storms, and the phenomena that accompany them form over wide geographic areas. These occurrences are classified as general severe weather . [ 1 ] Downbursts and tornadoes are more localized and therefore have a more limited geographic effect.
This scale helps categorize each tornado by its intensity and its area, and can estimate the wind speeds associated with the damage caused by the tornado. The EF scale are divided into six categories:
Severe tornado damage occurs with an EF3 tornado, which has wind speeds of 136 to 165 mph. Some walls of well-constructed houses can be torn off. Most trees in the path of the twister will be ...
A multiple-vortex tornado outside Dallas, Texas, on April 2, 1957. A multiple-vortex tornado is a tornado that contains several vortices (called subvortices or suction vortices) revolving around, inside of, and as part of the main vortex. The only times multiple vortices may be visible are when the tornado is first forming or when condensation ...
Science & Tech. Shopping. Sports ... be evident during post-storm damage surveys. Intense tornadoes can occasionally be accompanied by smaller funnels, known as satellite tornadoes, that rotate ...