Posted by WorldPeas 1 day ago
G5: " Pipeline currents can reach hundreds of amps, HF (high frequency) radio propagation may be impossible in many areas for one to two days..."
Looks like G5 is the highest level and the scale system is used by NOAA.
in which case, don't worry about it as we won't be around to worry about it further
astro-physics is AMAZING (until it kills you lol)
I hear that bit in my head every time a new plane or weapon designation is announced, glad to hear it stuck with others too.
Now I'm feelin' so fly like a G6
But having been in 1859 we only have estimates on what the consequences would be in the modern world. But pretty grim at the looks of it.
Though I suppose you could also queue it.
It’s also technically not a documentary but historical drama.
Casting (who played who), acting, costumes and scenography (where did they get all these '80 soviet cars), and choice of scenes to film.
I had my hair rising when the guy cleaning roof of a building neighboring the reactor got stuck in deadly radiation zone for 4x the allowed 13 seconds. "You're dead comrade."
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
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
Yes, for suitable values of "recently".
> And I also never remember seeing Aurora at my latitudes.
How old are you?
If you're younger than say your mid-40s you probably won't remember the early 80s, which is the last time we had a solar maximum that really came to anything.
Solar activity rises and falls on an 11-year cycle, and right now we're experiencing quite a peak. The previous three, peaking in 2014, 2011, and 1989 were a bit of a bust.
There was a massive peak in 1979 and I can remember my dad showing me the aurora when I was about six or seven - it seemed to be present most nights over the winter. That was also around the time of the CB Radio craze, where atmospheric conditions were such that you could use "skip" - bouncing radio signals off the highly-charged ionosphere - to talk to people hundreds of miles away as if they were just down the road, even on the comparatively high frequencies that CB used. There was a bit of a peak in the late 80s, and some good RF propagation too, as well as some incredible aurora - although the big one I remember was in about the end of 1991, early 1992.
We had absolutely blistering hot summers followed by really cold and snowy winters, too, kind of like we're having at the moment.
If the solar cycles have a longer repeating cycle of intensity on the scale of a hundred years or so (and it looks a bit like they do) then the next solar maximum in about 2036 is going to be even bigger.
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?
Funnily enough, despite having lots of alerts set up it was my mom who texted me from northern Brandenburg as she spotted it after getting an alert from RegenRadar, of all apps...
Nice to hear earth weather apps also work great in space haha. I'll keep that in mind when I set up my own notifications. Hopefully I have time to look into it before the next storm hits.
And up at the top right, left to "Latest" you can skip the time back and forth at 10 minute intervals. And then jump back like 10 images, what a beauty.
You can even see Starlink satellites https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/1820
- https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2230
- https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2240
Incredible, thanks so much!
How sure are we the aliens aren't trying to dial in?
Replace hex with something more robust, at least with an actual metallic case.
Not sure what the best service is to be alerted ahead of time. Apparently it'll be strong here again at 6am according to some of the apps some random people were waving around.
What if one of my homelabs needed 100% uptime to meet my wife's SLA for messaging? Is this able to be protected?
Shielded Ethernet could plausibly have issues with induced current on the shield. PoE might be less immune than ordinary Ethernet depending on what you’re doing with it, although well-behaved devices should be isolated. If you have a cable ISP, the cable shield might get toasty, although it’s likely to be grounded close enough to your house that any damage will be upstream.
Your 100% uptime will be tricky if your ISP goes down or you lose power.
Perhaps though you will still be able to continue to send and receive messages despite having disconnected your power supply. [1]
[1] https://babel.hathitrust.org/cgi/pt?id=uva.x001679510&seq=40...
Also, it could be a convenient excuse to upgrade to fiber internet service if you haven't already. (Yes, excuse. Equipment should have more than good enough isolation to not care.)
We didn't really understand this kind of thing when the Carrington event happened, so nobody knows for sure, but estimates for induced voltage on long conductors are usually something on the order of 20V/km. So for a 5 km long coaxial cable, you're only talking about ~120V of induced potential difference (i.e. the same voltage as a residential plug in the US). When people are analyzing the potential damage from this kind of electromagnetic disturbance (E3 is the term you'll see, based on analysis of nuclear EMP which has other components that you don't see in geomagnetic storms regardless of severity), it's mostly about really long conductors, like on the order of 100km.
104955 Warning Geomagnetic Disturbance Warning 01.19.2026 14:30
PJM-RTO
A Geomagnetic Disturbance Warning has been issued for
14:30 on 01.19.2026 through 16:00 on 01.19.2026 .
A GMD warning of K8 or greater is in effect for this period.
End time: 01.19.2026 16:00
I've posted on this before, for other warnings. Not going to repeat that.