[shibumi]

"Northern Lights have been photographed in the USA as far south as Wisconsin and Washington"

On several occasions during the winter of 1967 I witnessed Northern Lights in South Bend Indiana (41° North) - significantly farther South than Wisconsin.

I have no idea if that was an unusual year for Solar activity.
I have not seen them at that Latitude since.

[radu]

A few years ago, there was a strong enough storm to let us see the lights in southern TN. They weren’t all that impressive but they WERE auroras and had me standing outside in frigid weather for over an hour to watch. There isn’t much that will keep me outside when it’s cold. LOL

[Pontiac]

On several occasions during the winter of 1967 I witnessed Northern Lights in South Bend Indiana (41° North)

I may have seen the same show in North West Ohio.

I remember my father getting us kids in the car and driving out to the country to watch them.

[FreedomStar3028]

The lights have been seen as far south as Florida.

If they are ever seen that far south again, hope you have clean water and food for a few days.