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Level S4 solar radiation event

swpc.noaa.gov

141–150 of 205 posts

Re: Level S4 solar radiation event

#141
post #138
post #134

I missed it (seeing the Aurora) .. are there any reliable alerts for this sort of event, that do not alert me about anything else, but really only such big events?

https://www.swpc.noaa.gov/content/subscription-services

Thanks, that seems exactly what I was looking for. (Now I have to figure out the best way to get a alert to my phone if my inbox receives such a mail, probably easiest to use a a mailadress just for this case and then treat this emailadress different)

Re: Level S4 solar radiation event

#142
post #139

I'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.

I'll be attempting to get some photos/footage from Esperance.

There's a high triple threat bar for Astro photos sourced from Western Australia.

https://apod.nasa.gov/apod/ap110529.html

If you manage to pull off the Aurora Australis above a triple curl at The Right with a shark body surfing into the green room ... the internet will explode.

Re: Level S4 solar radiation event

#143
post #11

If anyone is interested in what "G4" means in context, here's the scale: https://www.swpc.noaa.gov/noaa-scales-explanation

The scale seems capped at a pretty low upper end? It feels like with all the mindbogglingly huge numbers usually involved when talking about space, there must be much, much worse events possible. Is it just that we don't know enough about them due to lack of experience that these aren't included?

Re: Level S4 solar radiation event

#144
post #140

I live somewhat close to the arctic circle and the aurora has been exceptional lately. One recent evening it looked like there was a massive city behind the cloud cover, and a few nights before when the sky was clear I watched enormous green flames for hours.

Aha, you probably witnessed a glimpse of Cittàgazze. You can capture it in photograms with a special emulsion: https://hisdarkmaterials.fandom.com/wiki/Aurora?file=Citt%C3...

Re: Level S4 solar radiation event

#145
post #11

If anyone is interested in what "G4" means in context, here's the scale: https://www.swpc.noaa.gov/noaa-scales-explanation

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..."

HF propagation is flaky at the best of times. It's affected by the day/night cycle and by the weather.

Re: Level S4 solar radiation event

#146

Years 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?

Disconnect your telegraph batteries and run on aurora power only

Re: Level S4 solar radiation event

#149

Up to G-5 possibly. Cell phone visible in dark areas throughout most of CONUS. It was mentioned that air travel ionizing radiation exposure increases during geomagnetic storms. I'd consider pausing travel for a couple of days to not be a guinea pig because there's not enough data to consider it safe. If anyone absolutely must fly tonight, it'd be interesting if they were to take a high sensitivity dosimeter to see wh…

Not sure how to deal with this kind of wildly unbalanced risk assessment

Re: Level S4 solar radiation event

#150

Years 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?

Feel a bit sensationalistic. It happens, it's not rare, and we've always got on with life perfectly fine.
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