Live data from Hacker News

X5.1 solar flare, G4 geomagnetic storm watch

spaceweatherlive.com

111–120 of 123 posts

Re: X5.1 solar flare, G4 geomagnetic storm watch

#111

The Swiss Weather Office official app has a crowdsourced photo gallery: https://www.meteosuisse.admin.ch/services-et-publications/ap... Look at the pictures from 3AM onwards on the 12 of November: you'll have a nice overview of how the aurora looked like from Switzerland (it's a time sensitive app and they certainly don't keep the pictures forever).

https://Spaceweather.com has a link to some photos taken in El Salvador at 13N Lat. Last night was a great show for sure.

I enjoyed it for about 5 hours out here west of DFW. I hope the actual X5.1 event due to arrive in the next 3-5 hours will persist into the evening so I get another show.

Re: X5.1 solar flare, G4 geomagnetic storm watch

#112
post #106

Is there a way to connect the Alert/Warnings/Watches from SWPC to specific events? It seems like there are at least three different solar events and it's hard for me to understand if they've all passed or if we're expecting more.

The CME from the X5.1 flare has not arrived yet. Here are the websites I use: https://www.swpc.noaa.gov/ https://www.swpc.noaa.gov/communities/space-weather-enthusia... https://www.spaceweather.com/ https://space.umd.edu/pm/

I also use https://spaceweathernews.com/ Lots of data in there for us to see the sources and effects

Re: X5.1 solar flare, G4 geomagnetic storm watch

#113

I'm disappointed I missed it, I had disabled my Aurora phone alert after it woke me up for a 1% chance of seeing it a few weeks ago. I saw a bit of light in SE Michigan at about 1:30 AM EST, but just a tinge of green.

It's not over - check back tonight.

Re: X5.1 solar flare, G4 geomagnetic storm watch

#114
The flare is delaying a rocket launch due to concerns about the potential impact on the payload (two spacecraft bound for Mars):

"NG-2 Update: New Glenn is ready to launch. However, due to highly elevated solar activity and its potential effects on the ESCAPADE spacecraft, NASA is postponing launch until space weather conditions improve. We are currently assessing opportunities to establish our next launch window based on forecasted space weather and range availability."

https://twitter.com/blueorigin/status/1988621902881914961

Re: X5.1 solar flare, G4 geomagnetic storm watch

#116
post #115

This aurora looks predominantly red. The last big one had pinks and greens easily visible to the naked eye. I wonder what causes the difference.

Has all to do with solar flare energy levels and how/where it interacts in the atmosphere. [1][2]

[1]: https://www.space.com/aurora-colors-explained

[2]: https://www.nps.gov/articles/-articles-aps-v8-i1-c9.htm

Re: X5.1 solar flare, G4 geomagnetic storm watch

#117

The flare is delaying a rocket launch due to concerns about the potential impact on the payload (two spacecraft bound for Mars): "NG-2 Update: New Glenn is ready to launch. However, due to highly elevated solar activity and its potential effects on the ESCAPADE spacecraft, NASA is postponing launch until space weather conditions improve. We are currently assessing opportunities to establish our next launch window bas…

Love the use of space weather

Re: X5.1 solar flare, G4 geomagnetic storm watch

#118
post #52
post #40

A severe geomagnetic storm is starting now (November 12 0000Z). But it's from the previous X-flares (X1.7 and X1.2), not the X5.1 flare.

From what I’ve read that could be bad, because prior flares can clear a path (through the solar wind) for later flares to move faster and hit harder.

Right, this three punch combo couldn't have been planned better.

Re: X5.1 solar flare, G4 geomagnetic storm watch

#119
post #80

US power grid info: PJM: Geomagnetic Disturbance Warning 11.11.2025 19:25 (PJM times are Eastern Standard). PJM-RTO A Geomagnetic Disturbance Warning has been issued for 19:25 on 11.11.2025 through 04:00 on 11.12.2025 . A GMD warning of K7 or greater is in effect for this period. This is only a warning. There are no listed actions being taken. When you see Geomagnetic Disturbance Action, not just Warning, there's a p…

PJM warning is still in effect as of the next morning, but there are still no related actions.

Re: X5.1 solar flare, G4 geomagnetic storm watch

#120
post #80

US power grid info: PJM: Geomagnetic Disturbance Warning 11.11.2025 19:25 (PJM times are Eastern Standard). PJM-RTO A Geomagnetic Disturbance Warning has been issued for 19:25 on 11.11.2025 through 04:00 on 11.12.2025 . A GMD warning of K7 or greater is in effect for this period. This is only a warning. There are no listed actions being taken. When you see Geomagnetic Disturbance Action, not just Warning, there's a p…

So then "Montreal and some other locations" probably had the best views of any densely populated areas to watch the Aurora: When power is out, light pollution is no longer a problem!
Post reply on HN