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Coronal mass ejection impact imminent, two more earth-directed CMEs

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321–330 of 418 posts

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#321
post #208

The K-index for this is an 8 which is one less than an extreme G5 geomagnetic storm ( https://en.wikipedia.org/wiki/K-index ). I haven't been able to find it, so I'm curious what the Carrington event K-index was?

SWPC is now showing this storm as a G5 with a K-index of 9: https://www.swpc.noaa.gov/

Yikes

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#322
post #309

Earlier quoted context omitted.

Strong disagree. When there is sufficient political will complex policies can and will be enacted. What is missing in climate action is not some psychological deficiency of our species, it’s lack of strong enough political consensus. ”We can’t do this” is both inaccurate and harmfull. I believe ”We are not currently fixing this” and ”there is a need for stronger political alignment” are the more accurate descriptions…

> it’s lack of strong enough political consensus But this _is_ the psychological deficiency of our species.

No, the fact people can have different opinions is a richness. The point of political activity is to align these opinions.

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#324
post #189

Earlier quoted context omitted.

Uuuuh I have a flight today 8pm CT . What will this mean for airplanes?

According to the SWPC[0], the "SPACE WEATHER CONDITIONS" section displays the pertinent information: as of 5/10/2024 at 6:00 CST, the "24-Hour Observed Maximums" list "R3 S2 G4". The "Latest Observed" section shows "R1 S1 G4". According to NOAA Space Weather Scales [1], the effects of those events, their levels, and the corresponding hazards (including biological risks for the "S" category) are listed. It is unclear…

In general, not related to this event, anything over FL410 (roughly 41,000ft) and closer to the pole than 70 degrees latitude would be considered high altitude and high latitude in the aviation world.

Above FL410 is rare, except for business jets that can cruise that high. It comes with extra requirements on oxygen masks etc.

Polar routes are not that rare, but depend on certification how far away from a suitable airport you can go.

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#325

Earlier quoted context omitted.

Do you have a source for this? My friend was asking about this.

FWIW I'm an aircraft mechanic and the only complaint I've ever heard related to solar storms was that the HF radio stopped working. Which isn't a radio thats going to be used or even installed on a typical airliner. Although it could also disrupt satellite communication causing some delays in flight planning and aircraft/crew turnaround. For a fun anecdote, when the HF radio fault was reported we weren't aware of the…

HF is installed on many airliners, it's mandatory for the North Atlantic routes between the US and Europe. Still checked every flight as a backup to satellite position reporting (which is relatively new)

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#326
Was raining here in the Northeastern US so didn't get to see the auroras, but definitely got to see the lights in my house flickering and woke up to an inbox full of "Your UPS has entered battery mode. Your UPS has returned to AC mode." messages.

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#327

Earlier quoted context omitted.

Not very well. They will absolutely lose sats this weekend.

How bad will it be, I'm 100% dependent on SL (as is everyone else in my neighborhood).

You’ll all get a chance to go play outside :)

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#328
post #84

Earlier quoted context omitted.

I used to be a logistics officer for an Infantry battalion. Most of the comments down thread underestimate water consumption. Depending on the climate, you'll want the following daily quantities [1]: - 2-3 gallons for drinking - 1.5 gallons for hygiene (can skip for a while) - 0.5 gallons for food prep The planning factor for military operations was 8 gallons per person per day. Water is heavy—8 pounds per gallon—and…

8 ga of water per person per day is completely insane in disaster scenario. 2-3ga for drinking a day? Medical professionals recommend less than 1 for a normal person.

I’d you’re not doing anything. But if you’re doing physical effort then you’ll need to drink a lot more that 2–3L a day.

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#329

Earlier quoted context omitted.

Linear scales usually don't have an intuitive upper limit that people can understand ("is 10000 bad?"). Citizen-facing scales should optimally go from 0 (no concern) to 10 (either world-shattering event or highest value ever observed). Due to the nature of how many natural disasters scale in impact on humans, this will often result in an logarithmic scale.

Excellent point about linear, but sometimes log_10 accelerates pointlessly fast. log_2 might be more reasonable.

As an enthusiastic amateur photographer I'm a big fan of log_2 scales. Photography is full of them, most settings follow it and photographers call them "stops". One stop more is twice the light. People don't even think about logarithmic scales but it's very easy to intuit what going up and down the log_2 scales will result in.

Good scale, I like it.

Re: Coronal mass ejection impact imminent, two more earth-directed CMEs

#330
post #227

Earlier quoted context omitted.

Humanity is good in sweeping problems under the rug and not preparing to various threats.

Are we not prepared though? Given other posts in this thread it seems to me that the effects are all calculated, expected and accounted for. I mean if it's strong enough to fry off-grid electronics then it's a different matter entirely, but consumer electronics has some protections against that, right?

In the past consumer electronics came in metal boxes that were earthed, I sure those will be fine. But these days everything's made out of plastic and not grounded.
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