Overview
- Videos from the Stuttgart district of Bad Cannstatt on December 23 showed a distinct violet sky glow identified as an aurora.
- The Deutscher Wetterdienst said the display resulted from charged particles from coronal mass ejections penetrating Earth's magnetosphere.
- Viewing was reported as best above roughly 800 meters in the Black Forest and at similar elevations on the Swabian Alb where skies were clear.
- A temporary break in cloud cover enabled sightings in Stuttgart, while dense clouds blocked views in other parts of the region.
- Forecasters said it remained unclear whether auroras would be visible in southwestern Germany over Christmas.