8 ms·
Level S4 solar radiation event
https://www.swpc.noaa.gov/products/goes-proton-flux https://www.swpc.noaa.gov/products/goes-proton-flux
- WhitneyLand 9mo agoHow rare is this? G4 storms are ~100 per solar cycle (~11 years). So roughly 9 G4 events/year on average.
- burnt-resistor 9mo agoLike 20-25 years rare according to some space weather youtuber.
- creatonez 9mo ago> some space weather youtuber Please stop watching that guy, he is a total fraud and knows nothing about physics.
- tbrownaw 9mo agoBut they should mostly be in the same part of the cycle rather than spread evenly. It probably wouldn't make sense to calculate "average snow days per month" across an entire calendar year (in most places...), this is the same thing.
- velocity3230 9mo agoThis is an S4, though.
- velocity3230 9mo agoBelay that. The G-value was high too.
- rapht 9mo agoThis is an S4. Last S4 event was in October 2003.
- deleted 9mo ago[deleted]
- uticus 9mo agoPossible aurora visible through central US tonight
- dschuessler 9mo agoThis page looks like an accessibility nightmare. The entire warning text is an image. There is no transcription present for screen reader users. I did not expect this from a government website.
- delusional 9mo agoLooking at the aspect ratio (and working in a bank) it's worse than that. That's a powerpoint slide.
- delfinom 9mo agoNot like someone with poor vision is going to be able to see the aurora borealis that results /s
- cwillu 9mo agohttps://www.swpc.noaa.gov/communities/aurora-dashboard-experimental https://www.swpc.noaa.gov/communities/aurora-dashboard-exper... is better
- miduil 9mo agoNice, you can already see some solar flares in Austria again. https://www.foto-webcam.eu/webcam/kleinfleisskees/ https://www.foto-webcam.eu/webcam/kleinfleisskees/ https://www.foto-webcam.eu/ https://www.foto-webcam.eu/
- qwertox 9mo agoOh wow! https://www.foto-webcam.eu/webcam/ederplan/2026/01/20/0000 https://www.foto-webcam.eu/webcam/ederplan/2026/01/20/0000 And up at the top right, left to "Latest" you can skip the time back and forth at 10 minute intervals. And then jump back like 10 images, what a beauty. You can even see Starlink satellites https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/1820 https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/1820
- irjustin 9mo agoPossibly the most brilliant are around: - https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2230 https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2230 - https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2240 https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2240 Incredible, thanks so much!
- chakintosh 9mo agoCrazy how many starlink satellite trains can be seen here. I spotted 4 trains, in that one cam
- irjustin 9mo agoIsn't that just 4 sats and it looks like that because of long exposure?
- jcims 9mo agoNot to be a buzzkill but I think those are planes. The stars show trails so these must be long exposures, and trails of similar length appear to be going in all different directions, eg: https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/1820 https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/1820
- yzydserd 9mo ago[flagged]
- zahlman 9mo agoIt seems that the peak was several hours ago, and I haven't observed any effects from it...
- guerrilla 9mo agoThe peak was originally supposed to be 6-7 hours from now... it's still showing KP 8 here though, so I'm not sure what's going on. It could get more intense.
- bartman 9mo agoWe 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.
- paulmist 9mo agoAlso seen in the Netherlands!
- rob74 9mo agoYeah, there were auroras even as far south as Munich. Maybe not as intense, but it's the first aurora I ever saw, so I can't really judge...
- ccozan 9mo agoI am south-west of Munich and with a perfect clear sky I could only see stars, one meteor, and that's it.
- viscousviolin 9mo agoCould you see it from the inner city or only closer to the edges?
- bartman 9mo agoFriends 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...
- ComputerGuru 9mo agoDo you need long exposure to make it visible with a camera? How does that work in the presence of light pollution?
- thebruce87m 9mo agoTonight I could see the colours without the camera but it definitely stands out more with the long exposure of the camera. Even with lights in the direct line of the shot you you can get good results - presumably the phone is doing HDR to achieve this.
- ComputerGuru 9mo agoI tried it last night (generally cloudless sky). With the naked eye it just looked like light pollution. With long exposure it looked like a weirdly lit picture. In neither case did I see any hint of green or red. I’m not in the city, but you’d have to actually be two states away to escape its light (literally not figuratively, according to dark sky maps). :(
- Macha 9mo agoLocal light pollution normally makes it hard to see with anything short of long exposure, but today it was naked eye visible and regular photos also captured it.
- jjcm 9mo agoIf anyone is interested in what "G4" means in context, here's the scale: https://www.swpc.noaa.gov/noaa-scales-explanation https://www.swpc.noaa.gov/noaa-scales-explanation
- xeckr 9mo agoLooks like we get these for about 60 days for periods lasting 11 years.
- irthomasthomas 9mo agoWe are at kp 8.67. The Carrington event was a kp 9
- ianruh 9mo agoI 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 https://kp.gfz.de/en/hp30-hp60
- repeekad 9mo agoQueue Chernobyl documentary clip measuring the radiation as low because that’s as high the meter went
- celsoazevedo 9mo ago3.6 roentgen. Not great, not terrible!
- qingcharles 9mo ago*skin sloughs off*
- 9mo ago
- Animats 9mo agoPJM had some geomagnetic disturbance warnings, but did not progress to the alert stage or grid re-configuation actions. So, no US power grid problems. 104955 Warning Geomagnetic Disturbance Warning 01.19.2026 14:30 PJM-RTO A Geomagnetic Disturbance Warning has been issued for 14:30 on 01.19.2026 through 16:00 on 01.19.2026 . A GMD warning of K8 or greater is in effect for this period. End time: 01.19.2026 16:00 (All times are prevailing Eastern US time) I've posted on this before, for other warnings. Not going to repeat that.
- cbdevidal 9mo agoThank you, that's a really handy resource. Shared with my prepper friends. https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf
- PlatoIsADisease 9mo agoYears 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?
- fuzzer371 9mo agoKeep a couple days water and food on hand, go up to the pub, have a pint, and wait for this all to blow over.
- JoshTriplett 9mo agoWith how much modern cars rely on electronics, I would not try to drive during such an event.
- lxgr 9mo agoSolar flares are only dangerous to very long conductors.
- luxuryballs 9mo agoso cancel the limo?
- whyleyc 9mo agoIt’s ok - The Winchester is within walking distance.
- jrgd 9mo agoOmg i watched this yesterday!
- throwaway81523 9mo agoThat's a safety feature. It prevents you from drinking and driving if you go to a pub during a solar flare. :)
- _carbyau_ 9mo agoWeirdly, while the site in question is "blaring klaxons!" there are more "cool night lights!" posts than concern.
- guerrilla 9mo ago> while the site in question is "blaring klaxons!" No, it isn't. It clearly says everything is under control but it would be good to keep an eye on it.
- zamadatix 9mo agoUnless you're in space, a large scale electrical operator, or relying on HF radio there isn't much reason to be interested other than the lights for a G4 (what this is currently classed as).
- pvab3 9mo agomy Telecaster sure was noisy this morning but I didn't think much of it
- rzzzt 9mo agoBlaring Klaxons! https://youtu.be/LX2KX0OaofI https://youtu.be/LX2KX0OaofI
- bashtoni 9mo agoAustralian Bureau of Meteorology advisory for visible aurora: https://www.sws.bom.gov.au/Aurora https://www.sws.bom.gov.au/Aurora
- hahahahhaah 9mo agoIs that tonight or last night?
- bashtoni 9mo agoIt was only issued this morning Australian time, so I presume it's for tonight.
- jp0d 9mo agoAre there any resources to track Aurora sightings or predicted sightings?
- stubish 9mo agoAt the bottom right of that page is a subscribe link, with a number of different alerts and lists to subscribe to.
- jp0d 9mo agoThank you!
- lakid 9mo agohttps://aurora-alerts.uk/ https://aurora-alerts.uk/ Ignore the UK TLD, this tracks global sightings
- jp0d 9mo agoAhh thank you! I saw a few photos from last night's Aurora sightings down here in Vic, Australia. Maybe next time! :)
- 9mo ago
- aussieguy1234 9mo agoI'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.
- ikr678 9mo agoI'll be attempting to get some photos/footage from Esperance.
- defrost 9mo agoThere's a high triple threat bar for Astro photos sourced from Western Australia. https://apod.nasa.gov/apod/ap110529.html 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.
- rediguanayum 9mo agoMoon should be good too to see Aurora tonight: waxing crescent 1% https://www.moongiant.com/phase/today/ https://www.moongiant.com/phase/today/
- ferguess_k 9mo agoDarn Montreal is still too south. Wish I were in Winnipeg.
- tigerlily 9mo agoHopefully it's clear space weather for Artemis II coming up. I wonder what they do if it's inclement en route?
- perihelions 9mo agoThere's not that much they can do. It's often discussed that if the extreme August 1972 solar storm had overlapped with an Apollo mission (it didn't), it would have acutely sickened the astronauts. https://en.wikipedia.org/wiki/August_1972_solar_storms#Human_spaceflight https://en.wikipedia.org/wiki/August_1972_solar_storms#Human... > "Had a mission been taking place during August, those inside the Apollo command module would have been shielded from 90% of the incoming radiation. However, this reduced dose could still have caused acute radiation sickness if the astronauts were located outside the protective magnetic field of Earth, which was the case for much of a lunar mission. An astronaut engaged in EVA in orbit or on a moonwalk could have experienced severe radiation poisoning, or even absorbed a potentially lethal dose." The Orion capsule's contingency plan looks something like this: > "To protect themselves, astronauts will position themselves in the central part of the crew module largely reserved for storing items they’ll need during flight and create a shelter using the stowage bags on board. The method protects the crew by increasing mass directly surrounding them, and therefore making a denser environment that solar particles would have to travel through, while not adding mass to the crew module itself." https://www.nasa.gov/missions/artemis/orion/scientists-and-engineers-evaluate-orion-radiation-protection-plan/ https://www.nasa.gov/missions/artemis/orion/scientists-and-e...
- xattt 9mo agoFor All Mankind “illustrated” a solar storm at surface-level of the moon, including “boiling” regolith. I wonder how embellished this was, or whether particle bombardment would actually cause this. My mind goes to the working mechanism of eidophor projectors, where oil on the projection bowl does indeed deform under electron beam exposure.
- frzen 9mo agoI had the most intensely coloured lights visible in the west of Ireland. I've seen them a few times before but never like this. Phones were capturing them in video not just long exposures. Not sure what the best service is to be alerted ahead of time. Apparently it'll be strong here again at 6am according to some of the apps some random people were waving around.
- ortusdux 9mo agoThere are several apps that do a good job of alerting users. I use "Aurora Pro", which I prefer because it checks cloud cover and lets you set alert thresholds based on viewing probability.
- King-Aaron 9mo agoI woke up to a notification from aurora pro today, I'd forgotten I had the app. This would explain it
- cbeach 9mo agoProbably a stupid question, but should I unplug my EV? (UK)
- aliljet 9mo agoI wonder if we're going to see an aurora over Seattle tonight?
- throwway120385 9mo agoToo much light pollution. You'd have to get well outside of the city. I looked at the weather last night and I think there might have been some trails on Tiger where you would've seen it with headlamp off. In Seattle you can barely see planets.
- tramtrist 9mo agoWe never get aurora in Japan :(
- drmpeg 9mo agoAlthough everyone is interested in visible aurora, the proton flux is also really impressive. It peaked at 37,000 pfu at 1910Z. The highest ever recorded was 43,500 pfu in March 1991.
- JoeDaDude 9mo agoThere is a video update from the NOAA Space Weather Prediction Center. (I could only find this on Facebook) https://www.facebook.com/reel/1190509063198524 https://www.facebook.com/reel/1190509063198524
- burnt-resistor 9mo agoUp 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.
- garbagewoman 9mo agoNot sure how to deal with this kind of wildly unbalanced risk assessment
- Kunsang 9mo agoDiscussion of the event https://community.spaceweatherlive.com/topic/4210-x19-cme/ https://community.spaceweatherlive.com/topic/4210-x19-cme/
- neogodless 9mo agoThis is definitely not a language I speak! Flux and bZ!
- fnands 9mo agoDamn, I love finding some hyper-specific forums like this one. Sooo much jargon.
- nbf_1995 9mo agoTitle says "S4" solar radiation event, but the linked page says "G4" geomagnetic storm
- anon115 9mo agoany effects on the human body??
- internet_points 9mo agoDepends. If you're outside at night and tilt your head up, the Default Mode Network of your brain may be temporarily suppressed, while dopamine may increase.
- andrewinardeer 9mo agoAny tips on best practices in how one can protect homelab rigs from a Carrington level event? Let's say we were given two days notice that the mother of all S4s was inbound. Just switch everything off? What if one of my homelabs needed 100% uptime to meet my wife's SLA for messaging? Is this able to be protected?
- rootusrootus 9mo agoAFAIK the risk is for long transmission lines. So your equipment at home is not really in any danger, as long as there is not a major surge on the transmission lines that makes it all the way to your house. If that happens, well, losing the home lab is probably no longer the issue.
- idatum 9mo agoDiscontinue use of your telegraph system. Perhaps though you will still be able to continue to send and receive messages despite having disconnected your power supply. [1] [1] https://babel.hathitrust.org/cgi/pt?id=uva.x001679510&seq=403 https://babel.hathitrust.org/cgi/pt?id=uva.x001679510&seq=40...
- amluto 9mo agoNot much? As I understand it, the major effects are in very long wires. Long wires can have get massive induced currents. But your homelab is unlikely to have long wires or very large loops. Ethernet wires are limited to 100m, and unshielded Ethernet is transformer-isolated to well over 1kV. Shielded Ethernet could plausibly have issues with induced current on the shield. PoE might be less immune than ordinary Ethernet depending on what you’re doing with it, although well-behaved devices should be isolated. If you have a cable ISP, the cable shield might get toasty, although it’s likely to be grounded close enough to your house that any damage will be upstream. Your 100% uptime will be tricky if your ISP goes down or you lose power.
- tbrownaw 9mo agoMake sure you have a surge protector or ups, in case it makes the power grid go funky. Which you should have anyway. Also, it could be a convenient excuse to upgrade to fiber internet service if you haven't already. (Yes, excuse. Equipment should have more than good enough isolation to not care.)
- lgats 9mo agohttps://www.ieso.ca/Sector-Participants/RSS-Feeds/Day-0-Advisory-Notices-Summary https://www.ieso.ca/Sector-Participants/RSS-Feeds/Day-0-Advi... https://www.misoenergy.org/markets-and-operations/notifications/real-time-operations-notifications/ https://www.misoenergy.org/markets-and-operations/notificati... https://www.ercot.com/services/comm/mkt_notices/notices https://www.ercot.com/services/comm/mkt_notices/notices https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf
- _blk 9mo agoNice. And it's somewhat relieving to read this over a Starlink connection.
- AnishLaddha 9mo agofascinating, hope our critical infrastructure can handle this. how long does something like this last, and will it have an effect on artemis 2? hypothetical: if a carrington event-esque storm happens during the mission, how badly will the houston <-> orion module communication links be affected?
- sparin9 9mo agoTL;DR: A severe (G4-level) geomagnetic storm hit Earth on January 19, 2026 due to a solar coronal mass ejection. It can disrupt power grids, GPS, satellite systems, and radio communications, while creating visible aurora displays at higher latitudes.
- lukan 9mo agoI 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?
- cvt7bm 9mo agohttps://www.swpc.noaa.gov/content/subscription-services https://www.swpc.noaa.gov/content/subscription-services
- lukan 9mo agoThanks, 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)
- MrGilbert 9mo agoOne caveat is, that these events cannot be forecasted in the same way as weather on earth can. You usually only have a lead time of 15 - 45 minutes. See also https://www.swpc.noaa.gov/content/aurora-tutorial https://www.swpc.noaa.gov/content/aurora-tutorial
- lukan 9mo agoSure. But if I am awake, those 15 minutes are enough to get dressed and go outside. Yesterday I just would have had to walk to the balkony to see it, but I was busy with some frustrating coding problem instead ..
- Levitating 9mo agosame, I was awake for the whole night but completely missed it
- vachina 9mo agoOn iOS there’s an app literally called “Aurora”. It will notify you when you’re in an area with a high Kp (or above a Kp you specify).
- cess11 9mo agoI 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.
- internet_points 9mo agoAha, 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%A0gazze_aurora.png https://hisdarkmaterials.fandom.com/wiki/Aurora?file=Citt%C3...
- brador 9mo agoWhat strength would destroy the sensor?
- jokull 9mo agoAs seen from my apartment in Reykjavík Iceland: https://ss.solberg.is/89N0qS7T https://ss.solberg.is/89N0qS7T
- hindustanuday 9mo ago[dead]
- jesprenj 9mo agoOur network router in our radio station started acting crazy at 22:00:40 Europe/Ljubljana time. Uptime monitoring via HTTPS reported downtime for 5 minutes, but our radio archive that records audio over LiveWire recorded some bitcrushing effects for 5 minues. Maybe our Mikrotik hEX was flipping some bits? Recording from the radio archive: https://splet.4a.si./dir/solar.mp3 https://splet.4a.si./dir/solar.mp3
- justsomehnguy 9mo agoYes, sounds similar to a corrupted digital audio. Replace hex with something more robust, at least with an actual metallic case.
- jesprenj 9mo agoYes, that is planned. As soon as we get more money (:
- noumenon1111 9mo ago*Gemini Tech Tip #624:* Boost your Wi‑Fi and spiritual resilience by wrapping your router in aluminum foil! Protect against solar flares, reptilian packet theft, and basic physics. Turn it into a family craft: make and decorate foil router cozies and matching foil hats, then browse Reddit and/or the park, seeking fellow shiny‑headed believers.
- motrm 9mo agoSounds like a dialup modem at about 3:30 :) How sure are we the aliens aren't trying to dial in?
- markonen 9mo agoJust had my first uncorrectable memory read error on our servers in 10 years or so today (in Sacramento). I'd like to think it's related because the alternative (buying new DIMMs) is too horrifying to contemplate
- buildbot 9mo agoLast major storm I saw a significant number of single bit errors on my main server - never happened again, still using the same ram. So +1 anecdote
- dosnem 9mo agoIs this detectable without some parity checks?
- danielheath 9mo agoNo, but ECC ram gives you _hardware_ parity checks, which is much faster and doesn’t require you to change your code.
- markus_zhang 9mo agoWell I didn't see anything last night (In Eastern Canada), probably because there was too much light in the suburb. Now the aurora "area" turns back to Europe and Asia, I hope you guys enjoy it! Judging by this picture: https://services.swpc.noaa.gov/images/animations/ovation/nor https://services.swpc.noaa.gov/images/animations/ovation/nor... , I think in a few hours the whole North Europe can see it very clearly.
- T0Bi 9mo agoYour URL is broken (for me)
- juliend2 9mo agoMight be a coincidence but for the first time last night, my son's sleep projector[0] didn't stop after 1h like it does normally. I guess this could be related to it? (we are in Montreal) I doubt these toys are protected from those kinds of events. [0] https://www.amazon.com/Fisher-Price-Settle-Sleep-Projection-Soother/dp/B07N1JSXKF https://www.amazon.com/Fisher-Price-Settle-Sleep-Projection-...
- mrbluecoat 9mo agoVerizon will probably retroactively blame their outage on it.
- notfish 9mo agoHad to stay up until 2am shutting down our spacecraft. Stupid sun hates to see me get a solid night’s sleep.
- aclindsa 9mo agoWhat spacecraft is your spacecraft?
- phendrenad2 9mo agoAnd where did you park it? And what's the combination to open the hatch?
- wafflemaker 9mo agoWhat are the best apps to get notified when there's a geomagnetic storm /chances to see Aurora? Preferably not only for USA.
- trashface 9mo agoScott Manley just did a video on radiation shielding: https://www.youtube.com/watch?v=DJcbevbBzsc https://www.youtube.com/watch?v=DJcbevbBzsc Based on that, I presume the astronauts on the ISS will need to take cover due to this event
- johng 9mo agoThese solar events can cause loss of communication with satellites making avoidance maneuvers hard or impossible. This article just came out recently and is definitely scary: https://www.universetoday.com/articles/28-days-to-disaster-why-we-are-running-out-of-time-in-low-earth-orbit https://www.universetoday.com/articles/28-days-to-disaster-w...
- JumpCrisscross 9mo agoAny aurora luck for those of us in the Rockies? (Near Yellowstone.)
- MORPHOICES 9mo ago[dead]