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Tornado Alley, which covers portions of the Great Plains and Midwest, experiences “a higher propensity for tornadic development” because all the key ingredients to form one are found there ...
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 ...
This F5 rated tornado in Wichita Falls, Texas in April 1964, has a "rope" structure, these usually occurs when a tornado first form or when a tornado ropes out and dissapate. This nocturnal wedge EF5 tornado near Greensburg, Kansas in May 2007, has a "wedge" structure, these can reach widths of 1 mile or even 2 miles in rare occasions.
For a tornado to form in this manner, a rear-flank downdraft enters the center of the mesocyclone from the back. Cold air, being denser than warm air, is able to penetrate the updraft. The combination of the updraft and downdraft completes the development of a tornado. Tornadoes that form in this method are often violent and can last over an ...
Tornadoes can form any time the conditions are right. They take many shapes, but they all start the exact same way. ... The main ingredients to a tornado are warm air and cool air. Inside the ...
Tornadoes come in many sizes but are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust. [72] Most tornadoes have wind speeds between 40 and 110 mph (64 and 177 km/h), are approximately 75 metres (246 ft) across, and travel several kilometers (a few ...
Some of the most notorious twisters in U.S. history were wedge tornadoes, including the EF5 that leveled Joplin, Missouri, on May 22, 2011, and the El Reno tornado, which was a jaw-dropping 2.6 ...
The wall clouds do not necessarily need a mesocyclone to form and do not always rotate. As the wall cloud descends, a funnel-shaped cloud may form at its center. This is the first stage of tornado formation. [29] The presence of a mesocyclone is believed to be a key factor in the formation of the strong tornadoes associated with severe ...
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