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Level S4 solar radiation event

https://www.swpc.noaa.gov/news/g4-severe-geomagnetic-storm-levels-reached-19-jan-2026
180•WorldPeas•4h ago•68 comments

Nanolang: A tiny experimental language designed to be targeted by coding LLMs

https://github.com/jordanhubbard/nanolang
51•Scramblejams•3h ago•22 comments

Nearly a third of social media research has undisclosed ties to industry

https://www.science.org/content/article/nearly-third-social-media-research-has-undisclosed-ties-i...
174•bikenaga•6h ago•76 comments

What came first: the CNAME or the A record?

https://blog.cloudflare.com/cname-a-record-order-dns-standards/
265•linolevan•7h ago•95 comments

Reticulum, a secure and anonymous mesh networking stack

https://github.com/markqvist/Reticulum
14•brogu•50m ago•3 comments

The assistant axis: situating and stabilizing the character of LLMs

https://www.anthropic.com/research/assistant-axis
42•mfiguiere•3h ago•6 comments

British redcoat's lost memoir reveals harsh realities of life as a disabled vet

https://phys.org/news/2026-01-british-redcoat-lost-memoir-reveals.html
26•wglb•3d ago•17 comments

From Nevada to Kansas by Glider

https://www.weglide.org/flight/978820
89•sammelaugust•4d ago•14 comments

How we made Python's packaging library 3x faster

https://iscinumpy.dev/post/packaging-faster/
23•rbanffy•3d ago•1 comments

The coming industrialisation of exploit generation with LLMs

https://sean.heelan.io/2026/01/18/on-the-coming-industrialisation-of-exploit-generation-with-llms/
60•long•16h ago•49 comments

Notes on Apple's Nano Texture (2025)

https://jon.bo/posts/nano-texture/
120•dsr12•6h ago•76 comments

Use Social Media Mindfully

https://danielleheberling.xyz/blog/mindful-social-media/
19•mooreds•3h ago•9 comments

Conditions in the Intel 8087 floating-point chip's microcode

https://www.righto.com/2025/12/8087-microcode-conditions.html
83•diogotozzi•4d ago•22 comments

Weight Transfer for RL Post-Training in under 2 seconds

https://research.perplexity.ai/articles/weight-transfer-for-rl-post-training-in-under-2-seconds
16•jxmorris12•4h ago•0 comments

Show HN: An interactive physics simulator with 1000's of balls, in your terminal

https://github.com/minimaxir/ballin
21•minimaxir•7h ago•4 comments

Graphics In Flatland – 2D ray tracing [video]

https://www.youtube.com/watch?v=WYTOykSqf2Y
50•evakhoury•3d ago•11 comments

Sending Data over Offline Finding Networks

https://cc-sw.com/find-my-and-find-hub-network-research/
62•findmysanity•5d ago•6 comments

CSS Web Components for marketing sites (2024)

https://hawkticehurst.com/2024/11/css-web-components-for-marketing-sites/
97•zigzag312•9h ago•47 comments

Simple Sabotage Field Manual (1944) [pdf]

https://www.cia.gov/static/5c875f3ec660e092cf893f60b4a288df/SimpleSabotage.pdf
94•praptak•3h ago•42 comments

Radicle 1.6.0 – Amaryllis

https://radicle.xyz/2026/01/14/radicle-1.6.0
17•zdw•5d ago•2 comments

Show HN: Pipenet – A Modern Alternative to Localtunnel

https://pipenet.dev/
80•punkpeye•8h ago•15 comments

There's a hidden Android setting that spots fake cell towers

https://www.howtogeek.com/theres-a-hidden-android-setting-that-spots-fake-cell-towers/
99•rmason•4h ago•26 comments

Show HN: A creative coding library for making art with desktop windows

https://github.com/willmeyers/window-art
22•willmeyers•4h ago•2 comments

San Francisco coyote swims to Alcatraz

https://www.sfgate.com/local/article/san-francisco-coyote-alcatraz-21302218.php
131•kaycebasques•22h ago•41 comments

Bypassing Gemma and Qwen safety with raw strings

https://teendifferent.substack.com/p/apply_chat_template-is-the-safety
95•teendifferent•19h ago•25 comments

Fix your robots.txt or your site disappears from Google

https://www.alanwsmith.com/en/37/wa/jz/s1/
112•bobbiechen•7h ago•67 comments

Iterative image reconstruction using random cubic bézier strokes

https://tangled.org/luthenwald.tngl.sh/splined
71•luthenwald•4d ago•16 comments

Letter from a Birmingham Jail (1963)

https://www.africa.upenn.edu/Articles_Gen/Letter_Birmingham.html
414•hn_acker•5h ago•137 comments

GLM-4.7-Flash

https://huggingface.co/zai-org/GLM-4.7-Flash
325•scrlk•9h ago•108 comments

A Brief History of Ralph

https://www.humanlayer.dev/blog/brief-history-of-ralph
54•dhorthy•6h ago•30 comments
Open in hackernews

Level S4 solar radiation event

https://www.swpc.noaa.gov/news/g4-severe-geomagnetic-storm-levels-reached-19-jan-2026
175•WorldPeas•4h ago
https://www.swpc.noaa.gov/products/goes-proton-flux

Comments

uticus•3h ago
Possible aurora visible through central US tonight
dschuessler•2h ago
This 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•2h ago
Looking at the aspect ratio (and working in a bank) it's worse than that. That's a powerpoint slide.
delfinom•1h ago
Not like someone with poor vision is going to be able to see the aurora borealis that results

/s

cwillu•55m ago
https://www.swpc.noaa.gov/communities/aurora-dashboard-exper... is better
miduil•2h ago
Nice, you can already see some solar flares in Austria again.

https://www.foto-webcam.eu/webcam/kleinfleisskees/

https://www.foto-webcam.eu/

qwertox•1h ago
Oh wow! 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

irjustin•20m ago
Possibly the most brilliant are around:

- https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2230

- https://www.foto-webcam.eu/webcam/ederplan/2026/01/19/2240

Incredible, thanks so much!

caseyohara•58m ago
Those images around 19:00 are amazing. Thanks for sharing.
zahlman•2h ago
It seems that the peak was several hours ago, and I haven't observed any effects from it...
guerrilla•1h ago
The 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•1h ago
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.
paulmist•1h ago
Also seen in the Netherlands!
rob74•1h ago
Yeah, 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•23m ago
I am south-west of Munich and with a perfect clear sky I could only see stars, one meteor, and that's it.
Tachyooon•1h ago
Could you see it from the inner city or only closer to the edges?
bartman•5m ago
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...

fluxflexer•36m ago
Just spend an hour outsite (Northern Germany, 01:00 MET). Unfortunately nothing to report, neither visual nor on camera. Maybe I just went to late and missed the show. I hope you habe more luck in Canada and the US!
jacquesm•34m ago
It's pretty subtle right now here in NL but I can still see it with the naked eye. Mostly greenish haze that fades in and out.
karim79•20m ago
I was just out at a dog park and saw nothing! We have clear skies. I can't believe I missed this.
ComputerGuru•1h ago
Do you need long exposure to make it visible with a camera? How does that work in the presence of light pollution?
thebruce87m•1h ago
Tonight 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.

Macha•55m ago
Local 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•1h ago
If anyone is interested in what "G4" means in context, here's the scale: https://www.swpc.noaa.gov/noaa-scales-explanation
xeckr•54m ago
Looks like we get these for about 60 days for periods lasting 11 years.
irthomasthomas•38m ago
We are at kp 8.67. The Carrington event was a kp 9
ianruh•7m ago
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
neonmagenta•22m ago
so more of a 'bad storm here and there' level?
8bitsrule•15m ago
G4: " Induced pipeline currents affect preventive measures, HF radio propagation sporadic..."

G5: " Pipeline currents can reach hundreds of amps, HF (high frequency) radio propagation may be impossible in many areas for one to two days..."

Animats•1h ago
PJM 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•42m ago
Thank you, that's a really handy resource. Shared with my prepper friends.

https://emergencyprocedures.pjm.com/ep/pages/dashboard.jsf

PlatoIsADisease•1h ago
Years 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•1h ago
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.
JoshTriplett•1h ago
With how much modern cars rely on electronics, I would not try to drive during such an event.
lxgr•1h ago
Solar flares are only dangerous to very long conductors.
luxuryballs•44m ago
so cancel the limo?
whyleyc•41m ago
It’s ok - The Winchester is within walking distance.
Tepix•1h ago
Buy a bit of extra food and water.
y1n0•57m ago
And toilet paper! Rolls and rolls of toilet paper!
hnuser123456•1h ago
A really bad event would be that long-distance transmission lines act like antennas and pick up millions of volts and blow up all the transformers.

I don't know how much you can plan for that other than "if it happens, try to get home", and then all the usual prepper stuff.

swader999•1h ago
First rule of fight club...
rootusrootus•1h ago
For a really bad event that managed to blow a lot of transformers (presumably due to grid operators not seeing it coming) ... well, take up farming.
myself248•32m ago
Pray for clear skies and go out and watch the beautiful aurora, silly!

Depending on the kids' ages, you can teach them quite a lot about the Earth's magnetic field and why the aurora concentrates at the poles, how the high-energy particles light up the sky (it's a lot like a neon light), and how the atmosphere shields us from any danger despite the spectacular show.

_carbyau_•1h ago
Weirdly, while the site in question is "blaring klaxons!" there are more "cool night lights!" posts than concern.
guerrilla•1h 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•1h ago
Unless 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).
rzzzt•30m ago
Blaring Klaxons! https://youtu.be/LX2KX0OaofI
bashtoni•1h ago
Australian Bureau of Meteorology advisory for visible aurora: https://www.sws.bom.gov.au/Aurora
hahahahhaah•1h ago
Is that tonight or last night?
bashtoni•29m ago
It was only issued this morning Australian time, so I presume it's for tonight.
jp0d•1h ago
Are there any resources to track Aurora sightings or predicted sightings?
stubish•1h ago
At the bottom right of that page is a subscribe link, with a number of different alerts and lists to subscribe to.
aussieguy1234•1h ago
I'll be going out tonight if this continues into Australian night time hours.

At this strength, I was about to see the full display including colors with my naked eye in Melbourne, May 11th 2024. This storm is slightly stronger than that event.

rediguanayum•1h ago
Moon should be good too to see Aurora tonight: waxing crescent 1% https://www.moongiant.com/phase/today/
ferguess_k•1h ago
Darn Montreal is still too south. Wish I were in Winnipeg.
tigerlily•1h ago
Hopefully it's clear space weather for Artemis II coming up. I wonder what they do if it's inclement en route?
perihelions•26m ago
There'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...

> "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-e...

frzen•1h ago
I 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•54m ago
There 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•48m ago
I woke up to a notification from aurora pro today, I'd forgotten I had the app. This would explain it
cbeach•1h ago
Probably a stupid question, but should I unplug my EV? (UK)
qayxc•47m ago
No need. Wrong type of solar event. You might be able to see auroras, though. I saw some a couple of hours ago.
jacquesm•44m ago
No.
aliljet•58m ago
I wonder if we're going to see an aurora over Seattle tonight?
tramtrist•56m ago
We never get aurora in Japan :(
WhitneyLand•53m ago
How rare is this?

G4 storms are ~100 per solar cycle (~11 years).

So roughly 9 G4 events/year on average.

drmpeg•17m ago
Although 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•6m ago
There is a video update from the NOAA Space Weather Prediction Center. (I could only find this on Facebook) https://www.facebook.com/reel/1190509063198524