Tornado Alley

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Tornado Alley, an area through the Midwest and South where tornados are more prone to happen than anywhere else in the United States, and why does this happen in this area? This research paper will look at how Geology helps us understand this phenomenon.
Tornado Alley is a nickname given to the area of the southern plains of the central United States that consistently experiences a high amount of tornadoes throughout the year. Tornadoes typically happen during the late spring months and sometimes in the fall. The Gulf Coast has its own nickname of “Dixie Alley” where tornadoes are experienced in late fall. (www.ncdc.noaa.gov) Tornado Alley typically includes the area from central Texas up through northern Iowa and central Kansas west …show more content…

Despite some great progress scientist are still learning how these supercells concentrate enormous amounts of energy and give air violent swirling motions of destructive tornadoes. A source of the tornado rotation usually starts with surface winds coming from the southeast. Then the higher altitude winds from the southwest give the air in between a slow rolling motion. The air rising into a growing thunderstorm lifts the rolling air, forming vertical counter clockwise and clockwise vortices. The clockwise vortex usually dies and winds from the surface help cause the storms updraft to tilt. (Williams, p.186) T.T. Fujita, of the University of Chicago, developed a scale from 1 to 5, which is weakest to strongest. Tornadoes that have winds below 116 to 189 kilometers are classified as a F1 tornado and can cause trees to snap and windows to break. F2 tornadoes have winds of 181-253 kilometers per hour have the power to uproot trees. F3 tornadoes have have winds of 254-332 kilometers per hour and cause severe damage powerful enough to flip cars over and knock down brick walls. F4 tornadoes have winds up to 333-419 kilometers per hour and are devastating, destroying houses. The strongest category of a tornado is F5 and this tornado produces winds above 419 kilometers per hour. These tornadoes are capable of destroying steel buildings. More than one-half of all tornadoes reported are in the F0-F1 range of intensity; however nearly 70% of all fatalities are caused by tornadoes of F4 to F5 intensity. (Boorstein, Renneboog,

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