Earlier quoted context omitted.
Just spend an hour outsite (Northern Germany, 01:00 MET). Unfortunately nothing to report, neither visual nor on camera. Maybe I just went to late and missed the show. I hope you habe more luck in Canada and the US!
It's pretty subtle right now here in NL but I can still see it with the naked eye. Mostly greenish haze that fades in and out.
Level S4 solar radiation event
111–120 of 205 posts
Re: Level S4 solar radiation event
#112Earlier quoted context omitted.
We are at kp 8.67. The Carrington event was a kp 9
Have we been having these more recently? I don't ever recall seeing these in the news so frequently. It feels like there are several a year now. A decade ago, never. And I also never remember seeing Aurora at my latitudes. Do we just have better sensing now, or is there some cycle on a period longer than a few years? Or maybe I'm crazy and just never noticed.
There was also a fairly significant geomagnetic storm back in November of 2025 as well.
You can see the data here at NOAA's Space Weather site https://www.swpc.noaa.gov/products/solar-cycle-progression
Re: Level S4 solar radiation event
#113Re: Level S4 solar radiation event
#114How rare is this? G4 storms are ~100 per solar cycle (~11 years). So roughly 9 G4 events/year on average.
Like 20-25 years rare according to some space weather youtuber.
Please stop watching that guy, he is a total fraud and knows nothing about physics.
Re: Level S4 solar radiation event
#115Earlier quoted context omitted.
> Biological: Unavoidable radiation hazard to astronauts on EVA; passengers and crew in high-flying aircraft at high latitudes may be exposed to radiation risk. Anyone have a sense of magnitude for this advisory? How much more radiation should an airline passenger expect to receive during a G4 event than normal?
roughly up to 5-10 times the normal dose.
Re: Level S4 solar radiation event
#116Re: Level S4 solar radiation event
#117Re: Level S4 solar radiation event
#118If anyone is interested in what "G4" means in context, here's the scale: https://www.swpc.noaa.gov/noaa-scales-explanation
We are at kp 8.67. The Carrington event was a kp 9
The May 2024 G5 electrical storm had a peak measured DST of −412 nT: https://en.wikipedia.org/wiki/May_2024_solar_storms
The Carrington Event had an estimated peak DST of −800 nT to −1750 nT, but no one really knows: https://en.wikipedia.org/wiki/Carrington_Event
Re: Level S4 solar radiation event
#119Earlier quoted context omitted.
G4: " Induced pipeline currents affect preventive measures, HF radio propagation sporadic..." G5: " Pipeline currents can reach hundreds of amps, HF (high frequency) radio propagation may be impossible in many areas for one to two days..."
"Free Energy!"