As well as lights, spare lights, batteries and spare batteries, I hope I’m not telling my Dutch grannie to suck eggs, but please take plenty of layers of warm clothing. Good gloves. Good hat. And also some sort of face protection is very useful - in the Arctic Circle I experienced temperatures down to almost minus 40 Celsius. Crazy cold. Your eyelashes freeze and eyelids can stick together. The hairs in your nose snap, they are so brittle!
I found https://softservenews.com/ had an excellent Aurora forecast.
Oh, and make sure your camera batteries are up to the job - in those temperatures the usability of a camera can plummet.
Best of luck and stay warm.
Not jealous at all…………………………………………….
Totally jealous actually.
Paul