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Biggest solar flare since 2017 erupts from sun and Earth is in the firing line

space.com

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Re: Biggest solar flare since 2017 erupts from sun and Earth is in the firing line

#21

Post by dgacmu »

Animats wrote: post #4

No warnings at NOAA Space Weather Prediction Center.[1] No warnings on PJM grid dashboard. Probably not going to be a problem. [1] https://www.swpc.noaa.gov/

Perhaps you checked a few minutes too soon?

> SWPC Forecasters have issued G3 (Strong) Geomagnetic Storm Watches for 04-06 October due to a pair of coronal mass ejections that are anticipated to arrive over the course of the next three UTC days. Stay tuned for updates as we monitor this activity!

Re: Biggest solar flare since 2017 erupts from sun and Earth is in the firing line

#26

Post by Jtsummers »

grugagag wrote: post #25

Does this have any effect on the human body? Is this exposure measurably damaging for people?

As long as you're not in space you should be fine. If you are on the ISS, then you have some other experts you can consult, us randos on HN won't be able to help you much.

Re: Biggest solar flare since 2017 erupts from sun and Earth is in the firing line

#27

Post by elashri »

grugagag wrote: post #25

Does this have any effect on the human body? Is this exposure measurably damaging for people?

Yes but you have to be an astronout in the outer space without enough added protection for the increase of radiation. Or maybe some increased exposure for high altitude flights near the poles. Other than that earth's atmosphere would make it that not enough exposure will reach the surface of the earth. Well things would be different for indirect harm because of satellite and signal failures. They could even cause disruption for power grid. But I think most of the protection for these systems in place take solar flares into account. So probably the effects will be minimal.

Re: Biggest solar flare since 2017 erupts from sun and Earth is in the firing line

#28

Post by chgs »

dgacmu wrote: post #21
Animats wrote: post #4

No warnings at NOAA Space Weather Prediction Center.[1] No warnings on PJM grid dashboard. Probably not going to be a problem. [1] https://www.swpc.noaa.gov/

Perhaps you checked a few minutes too soon? > SWPC Forecasters have issued G3 (Strong) Geomagnetic Storm Watches for 04-06 October due to a pair of coronal mass ejections that are anticipated to arrive over the course of the next three UTC days. Stay tuned for updates as we monitor this activity!

Is a UTC day a different length to a common solar day? At this level of pre soon leap seconds and even sidereal day difference makes no difference

Re: Biggest solar flare since 2017 erupts from sun and Earth is in the firing line

#29

Post by buescher »

chgs wrote: post #28
dgacmu wrote: post #21

Earlier quoted context omitted.

Perhaps you checked a few minutes too soon? > SWPC Forecasters have issued G3 (Strong) Geomagnetic Storm Watches for 04-06 October due to a pair of coronal mass ejections that are anticipated to arrive over the course of the next three UTC days. Stay tuned for updates as we monitor this activity!

Is a UTC day a different length to a common solar day? At this level of pre soon leap seconds and even sidereal day difference makes no difference

Yes, but they probably mean "the next 72 hours from right now given in UTC".
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