Latitude of Grand Canyon - 36deg N
Latitude of Lincoln 53 deg N
Nil desperandum ...
Originally Posted by: DEW
It's not that simple though!
Because the magnetic north pole is over northern Canada, the auroral ring is skewed much further south over America. Right now it's centred at 60N over Canada (roughly on a par with Helsinki), whereas in our part of the world it's at 75N.
https://services.swpc.noaa.gov/images/aurora-forecast-northern-hemisphere.jpg Add 15 degrees to the Grand Canyon and you get 51N, which still sounds good - that's the south of the UK.
But then as we're further north, we get a much shorter and shallower night.
Here, at 52N, we currently get 3 hours of night with the sun, at its lowest, 20 degrees below the horizon.
The Grand Canyon gets 6 and a half hours of night, with the sun reaching 34 degrees below the horizon.
https://www.timeanddate.com/sun/@5353459 In other words - all things being equal, you'd prefer the Grand Canyon in terms of viewing opportunity... longer and deeper nights mean a better chance of seeing it.