About midnight last night, after I got home from getting half an hour of chilly star trails (and charged up the batteries the cold killed), I checked the space-weather app on my phone. It told me I had a strong chance of seeing some aurora if I left like right now.
So I did, and between about 12:15 and 1 AM, I got almost 400 photos of northern lights.
And I made all 393 photos into a 30-second timelapse, too. (Every second of video represents a minute of real time.)
Nerdy details: each photo is a 5‑second exposure, 11mm, f/2.8, ISO 1600. The photos were edited for brightness/contrast; the frames in the video are all straight-out-of-camera.