Guess it's not to be seen in Oklahoma. Drats.
That's not that great of a map of the visible oval. These are better:
http://www.spacew.com/www/aurvis.gif
http://www.dan.sp-agency.ca/www/rtoval.htm
Actually, it SHOULD be visible in North Carolina, Tenessee, and Oklahoma at this precise moment (given good viewing conditions.)
Sadly I've moved to the DC suburbs..going to glance but I doubt I'll see much.