If anyone is interested in what "G4" means in context, here's the scale: https://www.swpc.noaa.gov/noaa-scales-explanation
Level S4 solar radiation event
11–20 of 205 posts
Re: Level S4 solar radiation event
#12PJM had some geomagnetic disturbance warnings, but did not progress to the alert stage or grid re-configuation actions. So, no US power grid problems.
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.
Re: Level S4 solar radiation event
#13Do you need long exposure to make it visible with a camera? How does that work in the presence of light pollution?
Tonight I could see the colours without the camera but it definitely stands out more with the long exposure of the camera.
Even with lights in the direct line of the shot you you can get good results - presumably the phone is doing HDR to achieve this.
Re: Level S4 solar radiation event
#14Years ago I was concerned about this and made a plan with my wife for what to do if she was at work.
But now we have a bunch of kids in different schools and haven't updated our plan.
Does anyone have a plan for what happens if we have a really bad event?
Re: Level S4 solar radiation event
#15Weirdly, while the site in question is "blaring klaxons!" there are more "cool night lights!" posts than concern.
Re: Level S4 solar radiation event
#16Australian Bureau of Meteorology advisory for visible aurora: https://www.sws.bom.gov.au/Aurora
Re: Level S4 solar radiation event
#17Years ago I was concerned about this and made a plan with my wife for what to do if she was at work. But now we have a bunch of kids in different schools and haven't updated our plan. Does anyone have a plan for what happens if we have a really bad event?
Keep a couple days water and food on hand, go up to the pub, have a pint, and wait for this all to blow over.
Re: Level S4 solar radiation event
#18I'll be going out tonight if this continues into Australian night time hours.
At this strength, I could see the full display including colors with my naked eye in Melbourne, May 11th 2024. This storm is slightly stronger than that event.
Re: Level S4 solar radiation event
#19Moon should be good too to see Aurora tonight: waxing crescent 1% https://www.moongiant.com/phase/today/
Re: Level S4 solar radiation event
#20This page looks like an accessibility nightmare. The entire warning text is an image. There is no transcription present for screen reader users. I did not expect this from a government website.
Not like someone with poor vision is going to be able to see the aurora borealis that results
/s