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Level S4 solar radiation event

swpc.noaa.gov

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Re: Level S4 solar radiation event

#71

Post by bartman »

viscousviolin wrote: post #40
bartman wrote: post #9

We had intense aurora in Berlin, Germany. Green clouds dancing in the sky levels. Started around 22:10 local time or a bit earlier, and at this point there's only a faint red/green glow remaining.

Could you see it from the inner city or only closer to the edges?

Friends who live in Kreuzberg and Friedrichshain could see it pretty well. I'm a bit further south within Berlin where skies are minimally darker, but between 10pm and 11pm it was so bright that light pollution didn't matter.

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...

Re: Level S4 solar radiation event

#72

Post by throwaway81523 »

JoshTriplett wrote: post #29
fuzzer371 wrote: post #17

Earlier quoted context omitted.

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.

With how much modern cars rely on electronics, I would not try to drive during such an event.

That's a safety feature. It prevents you from drinking and driving if you go to a pub during a solar flare. :)

Re: Level S4 solar radiation event

#73

Post by burnt-resistor »

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 what happens.

Re: Level S4 solar radiation event

#74

Post by jrgd »

JoshTriplett wrote: post #29
fuzzer371 wrote: post #17

Earlier quoted context omitted.

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.

With how much modern cars rely on electronics, I would not try to drive during such an event.

No one would drive to the pub anyway. Better walking back home…

Re: Level S4 solar radiation event

#76

Post by aussieguy1234 »

bashtoni wrote: post #16

Australian Bureau of Meteorology advisory for visible aurora: https://www.sws.bom.gov.au/Aurora

Worth noting that Kp, which many talk about in discussions online, is more or less useless for anyone in Australia or the southern hemisphere. Lots of beginner Aurora chasers here get tripped up by that.

What is useful is KAus and the G index, KAus is shown on this page, so thats what i'll be tracking.

Re: Level S4 solar radiation event

#78

Post by repeekad »

ianruh wrote: post #69
irthomasthomas wrote: post #56

Earlier quoted context omitted.

We are at kp 8.67. The Carrington event was a kp 9

I am not an expert, but it’s worth noting that the kp index has a maximum value of 9. So though the Carrington event had a kp of 9, its intensity on the related (but not capped) HP30/HP60 scale [1] would likely have been higher. [1] https://kp.gfz.de/en/hp30-hp60

Queue Chernobyl documentary clip measuring the radiation as low because that’s as high the meter went
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