Aurora as Seen from Satellite

http://www.spaceweather.com/aurora/images2004/07nov04e/dmsp.gif

This shows you how far south the auroral oval was during part of that geomagnetic storm last week.

Now, since the auroras take place in the ionosphere, which is some miles up, even though the oval was over Michigan, I was able to see it pretty high in the sky in Ohio (and it was visible further south into the Carolinas, I believe) because I'm looking into the "wall".

A lot of times, the oval will not progress any further south than Ontario or the UP , but you might still be able to see it low on the horizon if you're in dark sky Michigan (and know what you're looking for).