"central Texas and goes north through Oklahoma, central Kansas and Nebraska and eastern South Dakota, sometimes dog-legging east through Iowa, Missouri, Illinois and Indiana to western Ohio." http://www.livescience.com/25675-tornado-alley.html
OK
.. would you believe in the late '40s into '50s i had to memorize that map in four different British Columbia schools just outside of Vancouver .. lol, nope, i didn't move, just more people moved in ..