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ILLINOIS — In the wake of Sunday’s blitzkrieg tornadoes, Disclosure would like to offer something a little more than coverage to our readers.
When was the last time you thought about how tornadoes work? Are you familiar with which particular weather conditions foster their fury?
Well, here’s a graphic that sums it up pretty nicely.
After yesterday’s events, there is no doubt that many of our readers heard the unearthly roar of the funnel cloud. A healthy sense of self-preservation along with deeply-ingrained human instinct normally causes a sense of fear in those who find themselves in a position to experience the deafening, banshee-howl and earth shaking rumble of a twister. But did you also know that tornadoes generate infrasound?
Infrasound is defined as sound waves with frequencies below the lower limit of human audibility. Oddly enough, studies have suggested that infrasound may cause feelings of awe or fear in humans. It has also been suggested that since it is not consciously perceived, it may make people feel as if odd or supernatural events are taking place.
Tornadoes are measured by the Enhanced Fujita Scale here in North America, based on the damage they cause. Tornadoes are classed from EF-0 (the weakest) to EF-5, the most violent and deadly, but also the rarest.
In 2011 Illinois was ranked the tenth most common state where violent tornadoes had occurred since 1950.
Here are some other interesting graphs and maps:
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