Suspected red glow under nearly cloud free skies seemed brighter than the usual city lights. Some clouds were lit by city but others were silhouetted by what must have been the northern lights. Intensity seemed to wane over a 15 minute period after 7:59PM MDT.
Camera: Caplio GX 100, 24mm, f/2.5, iso 200, 60sec. Looking N to NE.