I don't know, if someone didn't point it out to me I would think that it is light pollution from some nearby town. It is really faint red glow from the top part of aurora, the nice green and blue colors are made in lower parts of atmosphere behind the horizon. Also clear night made the observation of it easier. The AI image enhancement did really heavy lifting there, it looks nothing like that to naked eye.
So if it is visible there, you may already seen it and didn't think much of it.