Thoughts
A night to remember
On the night of Jan 19 - 20, the strongest aurora I’ve seen so far lit up the sky in vivid green, pink, and violet. Driven by an X1.9 solar flare and an Earth-directed CME, geomagnetic activity surged beyond Kp 8,67 (G4 on NOAA’s scale) and the main show peaked between 21:45 and 23:30. With a new-moon darkness and clear, cold air, the green curtains were even visible to the naked eye - and I ended up capturing it all on my iPhone because my camera wasn’t charged.
Last night was incredible. The kind of incredible that rewires your sense of what "a night sky" can be. I stepped outside expecting something - a faint arc maybe, a little glow low on the horizon. Instead, the aurora arrived like it had a choreography prepared: waves, curtains, pulses. It didn't just appear… it danced.
The forecast was there… but I still wasn't ready
The heads-up actually came through my Stammtisch group - someone posted the forecast, and suddenly the night had a mission. But even with that nudge, I was unprepared in the most relatable way possible: my camera wasn't charged.

So when the show began, I had exactly one tool ready: my iPhone.
And honestly? That almost made it better. No tripod rituals, no settings rabbit hole, no "one more exposure." Just me, cold air, a dark new-moon sky, and the unmistakable feeling that something rare was unfolding above my head right now.
Space weather turned the dial past "serious"

This wasn't a subtle aurora night. This was an event.
The Kp index went beyond 8,67, which maps to a G4 (Severe) geomagnetic storm on NOAA's scale - already near the top end of what most of us ever experience. NOAA even issued a G4 storm warning, which tells you just how real the conditions were.
The cause reads like a chain reaction written by the Sun:
- A class X1.9 solar flare erupted on Sunday, Jan 18.
- That flare was followed by a coronal mass ejection (CME) that reached Earth in the night from Jan 19 to Jan 20, kicking our magnetosphere hard enough to light up the atmosphere.
The main show: 21:45 to 23:30

The peak of the night - at least from where I stood - happened between 21:45 and 23:30. Those were the minutes when "maybe we'll see something" turned into "this can't be real."

I've seen auroras before - but this was the strongest aurora event I've ever seen so far.
What it looked like: color you could feel
At times the sky didn't look greenish in photos; it looked green in real life. The green light bands were visible to the naked eye, bold and structured - like luminous fabric being pulled across the stars.
And then came the colors that hit differently:
Pulsating pink and violet that felt almost unreal, like someone had added a neon gradient to the night.

Bright green curtains, shifting and rippling, sometimes fast enough to make you forget to breathe.

It gave me goosebumps. The kind where you catch yourself whispering "what is happening" to nobody.
Perfect darkness, perfect timing
The new moon gave the sky a deep, clean darkness - no silver wash, no competing glow - just an open stage for the aurora to take over. Add a clear, cold night, and it felt like the conditions had quietly aligned for maximum impact.
I couldn't stop watching
I kept telling myself "just five more minutes."
Five minutes turned into a full-on vigil - standing outside, checking the sky like it might change its mind, watching the patterns rebuild and collapse and rebuild again. Every time it dimmed, it teased. Every time it returned, it returned stronger.

Somewhere between the pink pulses and those green curtains, the night crossed a line from "beautiful" to "fascinating." It wasn't just a sky event. It was a reminder: we live under a star that reaches out and touches us, and sometimes that touch paints the world in color.
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