
The aurora borealis, or northern lights, are typically visible only in high-latitude regions near the Arctic. Caused by charged particles from solar storms interacting with Earth’s atmosphere, the phenomenon rarely reaches as far south as Switzerland. However, major geomagnetic storms, driven by powerful solar flares, can push the auroras much further.
This weekend, an unusually strong solar storm, classified as a G4-level event, triggered visible northern lights over much of Switzerland. Residents across Zurich, Bern, and the Jura Mountains reported vibrant green and purple hues lighting the night sky. Social media platforms have been flooded with photos and videos from astonished viewers, while local observatories confirmed the phenomenon’s intensity was the most remarkable in over two decades.
Besides offering a rare visual spectacle, the aurora prompted scientific interest and media coverage nationwide. Swiss power grid operators monitored systems for possible disturbances, as solar storms can affect satellites and high-frequency radio communications. No significant service disruptions were reported, but experts continue to watch the situation. Tourism in regions with high visibility spiked as enthusiasts sought the best vantage points.
While the storm has passed its peak, Swiss astronomers advise that faint auroras may still be possible over the next day if geomagnetic activity persists. Scientists anticipate further analysis from satellite data to understand the storm’s scope. Authorities remind residents to use safe methods for nighttime viewing and expect normal conditions to return throughout the coming week.






