Thursday, January 31, 2013

Are Tornado Alleys a Myth?



Somewhere in the 20th century tornadoes got lost up an alley. Several alleys, in fact. The first was the infamous prototype, Tornado Alley. Then there was Dixie Alley, Hoosier Alley and even a little byway called Carolina Alley. But are these alleys really backed up by science or are they quasi-accidental outgrowths of the history of tornado science? This is not exactly the sort of question meteorologists have a lot of time to ponder when tornadoes are touching down and tearing through cities and towns. So really, meteorologists mostly work with the alleys they have, and occasionally invent new ones.

Jennifer Henderson is no meteorologist. She’s a social scientist from Virginia Tech who took a deep breath and dove into the meteorological deep end: the recent annual meeting of the American Meteorological Society (AMS) in Austin, Texas. She exhibited a poster there that sort of questioned the scientific basis of tornado alleys, as well as kept her eyes open as the very human endeavor of studying, reporting on, and preparing others for the weather unfolded around her.

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