"Unexpected" aurora over Norway

As a photographer was about to give up on a night of looking for auroras, this monstrous aurora suddenly filled the sky. It lasted only a few minutes. I can't imagine what it's like to see this in person. It must be a marvelous moment that you remember forever.

As usual, I found this at the APOD site. (That's NASA's Astronomy Picture of the Day site.) I recommend visiting there every day. You never know what you'll find.

(Click pic for larger version.)