𝑮7𝑰𝙕𝑼 𝑹𝙍𝑫

Space weather, aurora and radio propagation from a UK perspective. Any alerts or warnings are informational only and are not official. I post about various other subjects as well, but always hope to be informative and interesting. Not a professional space weather forecaster, it's my hobby!

Typos in posts are a probability.

***Follow requests from bots or users with no profile info will be declined.

G7IZU RRD Website: https://www.tvcomm.co.uk/g7izu/

Also on BSky: @g7izu.bsky.social

G7IZU RRD Website: https://www.tvcomm.co.uk/g7izu/
Space weather:
Radio propagation:
Flight simulation:

Public Key

npub1rdzqlvscwm9sk9ehnrctzkzj7ngs0g28x5nae7yhava4ccs72qdsng7cqs

NIP-05 Address

g7izu_at_universeodon.com@momostr.pink

Profile Code

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Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1rdzqlvscwm9sk9ehnrctzkzj7ngs0g28x5nae7yhava4ccs72qdsng7cqs

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Last Notes

2026-06-18 18:13:33 UTC

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Radio Propagation
A strong sporadic-E cloud is located over The Bay of Biscay.
#spaceweather
#amateurradio
#radiopropagation
#g7izu
https://media.universeodon.com/media_attachments/files/116/772/462/235/589/192/original/c9c3eeeee76dc83f.mp4

2026-06-18 18:04:00 UTC

Radio Propagation
Strong sporadic-E propagation is affecting Europe, particularly between the UK and the Iberian Peninsula.
Orange=50 MHz
Hot pink=FM Band 2
Red=144 MHz
#spaceweather
#amateurradio
#radiopropagation
#g7izu
https://media.universeodon.com/media_attachments/files/116/772/421/336/512/991/original/66b9ed909bb48f0f.mp4

2026-06-14 10:18:06 UTC

Space Weather Ops
Another update today for the Space Weather Ops dashboard.
A couple of important changes:
The path estimator matrix has been overhauled to reduce the amount of chaotic flashing. Please check the colour key at the bottom of the panel for the changed indicator states.
The second major change is removal of the Kiruna magnetometer plot which was difficult to read. It's been replaced by a multi-channel bar graph which is intended to show a number of magnetometers across various longitudes, and therefore track the state of substorms.
The left part of the plot shows seven magnetometers in Alaska. The right side should show five in Europe, but only Kiruna data can be plotted in real-time from a direct feed, and the other four, which are supposed to be served by the USGS, are not showing any data. Should they appear, the plots should light up. Access to live magnetometer feeds in Europe is not easy so apologies for this.
As conditions change, an indicator on the top bar will show substorm progress. Click on the bar graphs to open a more detailed pop up page.
There are also a number of bug-fixes mainly to do with the cadence of alerts and announcements.
#spaceweather
#amateurradio
#g7izu
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2026-06-11 19:39:16 UTC

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Two different issues. There's the intentional ground-based interference and jamming around Russian and Iranian borders, and there's this newly discovered space-based interreference which can affect much wider regions. Whether this space-based interference is intentional or not is being debated.

2026-06-11 18:55:04 UTC

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The Youtube video is available for all to see. Seems very plausible, also testable by 3rd parties.

2026-06-09 14:12:27 UTC

Space Weather
CME WATCH RESTARTED:
Proton levels as measured by the EPAM instrument on ACE at L1 are rising quickly.
This is a sure sign that the CME hasn't missed us entirely and that we will be catching the westward leg of it very soon.
If you imagine the shape of a croissant, the thinning "legs" extend all the way back to the sun to the east and west, whilst the fat core heads far away from the sun.
We can expect a long period of storming with fairly chaotic Bz values whilst the structure passes through.
#spaceweather
#aurora
#radiopropagation
#amateurradio
#g7izu
https://media.universeodon.com/media_attachments/files/116/720/510/990/805/968/original/b2ef1b16a360ef35.png
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2026-06-08 23:47:02 UTC

Space Policy
Researchers at NASA’s Ames Research Center, reports that 73.3% of images the agency’s new SPHEREx space telescope collected between May and September of last year were contaminated by at least one artificial satellite trail.
[...] And it’s only going to get worse from here. Recent FCC filings have been made to approve up to 2 million satellites in Low Earth Orbit, as compared to the 20,000 or so currently in orbit.
Read more: https://www.universetoday.com/articles/space-telescopes-are-now-overwhelmed-by-satellite-trails

2026-06-08 20:21:49 UTC

Space Weather
CME update
Maybe it took a turn along the way. Anyway, no sign of any CME yet.
And no, I don't know if or when it will be here...
#spaceweather
#is_it_here_yet?
#g7izu
https://media.universeodon.com/media_attachments/files/116/716/353/065/700/765/original/4d75d794a844ea5e.mp4

2026-06-07 21:15:39 UTC

Space Weather
CME update
Latest analysis suggests the CME is slower than first suggested by models, and impact maybe after 12h UT on the 8th (but no guarantees!)
The chance of visible aurora in Europe in the evening is increasing!
#spaceweather
#radiopropagation
#amateurradio
#aurora
#g7izu

2026-06-05 06:22:55 UTC

Space Weather/rocket launch
China is about to launch Long March 8 Flight 7 (Solar Sail mission) straight into a solar storm.
Good luck! Watch live:
https://www.youtube.com/watch?v=RSDUGmnXlBE
#spaceweather
#longmarch
#solarsail
#g7izu

2026-06-05 05:07:08 UTC

Space Weather
It's 05h UT and I'm never normally up this early, so I guess it's a good time to promote my Space Weather Ops dashboard again!
Track solar wind and amateur radio propagation conditions all on one page! Get voice alerts in your browser, and configure Pushover messages so you can get alerts on your mobile anywhere you are (as long as the page is kept running somewhere).
View the page live online via the launch page here:
https://www.tvcomm.co.uk/g7izu/space-weather-ops/
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/116/695/742/868/555/215/original/d0c55ce5fcdab441.png

2026-06-03 21:27:13 UTC

Space Weather
CME arrival update
I'm now aware of better speed estimates from NOAA for the three CMEs. My initial values were based off of the radio burst velocities, which was not ideal.
CME 1 ~1220 km/s
CME 2 ~1129 km/s
CME 3 ~1405 km/s
So the three CMEs will be bunching up and likely arrive in a heap, quickly one after the other, but they won't overtake or cannibalise each other! The geomagnetic storm we're expecting will probably be around G3 level, but surprises do happen and it may peak higher for brief periods.
NOAA estimates arrival late on the 4th or early on the 5th. As we know from past experience, these estimates could be in error by many hours.
Some quarters are suggesting a double CME impact, the first in line with NOAA's prediction, the second later on the 5th.
This storms will likely cause aurora to mid-latitudes, but northern latitudes will have to fight the eternal twilight of the mid-night sun.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/116/688/261/761/200/420/original/32c402420668e0eb.mp4

2026-06-03 20:48:49 UTC

Space Weather
spaceweather.com is using the term "cannible CME" to describe the incoming series of solar storms.
This is plain wrong. It's a term the space weather community has been trying to stop people from using for many years now. Unfortunately, it continues...
Magnetic fields do not cross each other. If faster CMEs come up behind slower ones, the CMEs bunch up like a pile of pancakes and push each other forward. They do not merge, cross or overtake each other.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/116/688/114/440/682/376/original/4129cf1349ce64c2.png

2026-06-03 12:03:50 UTC

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Space Weather
A CME has been detected from the X1.1 flare. That'll make four Earth-directed solar storms launched in the last 24 hours.
I'm planning a longer post about these soon, but the sun won't stay calm enough for me to report it!
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/116/686/069/780/844/096/original/e51598cccf9cfe21.mp4

2026-06-03 11:55:13 UTC

Space Weather
A solar flare X1.1 peaked at 11h28 UT 03 June. A brief R3 radio blackout affected HF bands over Africa and Europe. Radio bands are now recovering.
Primary GOES 18 Xray flux monitoring dropped out at the peak, the secondary GOES 19 blue plot can be seen continuing here. The data drop out may not be connected to the flare. Automated apps and websites not using both sources will be reporting M9.7, but this flare reached X1.1.
#spaceweather
#radiopropagation
#amateurradio
#g7izu
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2026-06-02 22:52:50 UTC

Meshcore
I was curiously looking at the Meshcore app, wondering what routes the puny signals might take to get to me in Plymouth. To my suprise, most are coming via a 300+km link from Beachy Head to a local repeater near me. Quite amazing!
#meshcore
#g7izu
https://media.universeodon.com/media_attachments/files/116/682/960/702/153/885/original/3bd7cdc86487f8ea.jpg

2026-06-02 12:54:58 UTC

Climate Change
The sea surface temperature in the Bay of Biscay is above 21°C already. Waters off the south coasts of south-west England are already above 16°C.
You don't normally see these kinds of temperatures until much later in the summer - late August or September. The temperature anomaly in the Bay of Biscay and north-western Mediterranean Sea is around +7°C, which is pretty scary, since NOAA's anomaly scale runs only +/- 5°C!
Data from NOAA SST
https://www.ospo.noaa.gov/products/ocean/cb/sst5km/?product=ssta
#climate
#climatechange
#g7izu
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2026-05-28 23:19:45 UTC

Meshcore
So I didn't entirely waste my £46 on a LilyGo device! Having only picked up one local contact in 3 months, I've suddenly got I to a repeater 1.6km away and have received signals repeated from all over the UK and parts of Europe!
If anyone here is using it, give me a shout at @G7IZU-PL3
I wonder if anyone has found an actual use for the system yet? 🤔
#meshcore
#g7izu
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2026-05-15 17:02:22 UTC

Space Weather
The fast solar wind from a large coronal hole reached Earth a few hours ago.
A G1 geomagnetic storm is in progress. A G2 watch is in effect until midnight tonight (UT). A G1 watch will then be in effect for 16/17 May.
#spaceweather
#g7izu

2026-05-14 15:09:04 UTC

Space Weather
A large coronal hole has just passed the solar meridian. The fast solar wind should begin to affect Earth from tomorrow. A NOAA G2 geomagnetic storm watch is in effect for 15 May.
#spaceweather
#g7izu
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2026-05-05 15:49:10 UTC

This little nugget just popped into my phone's news feed.
It's basically a wideband signal monitor, but with such a huge bandwidth it'll be virtually useless for any meaningful information. There's a high likelihood it'll pick up lots of nearby electrical interference and give false readings.
https://hackaday.com/2026/05/04/a-shortwave-sensor-to-monitor-the-ionosphere/

2026-04-24 18:51:08 UTC

Space Weather
A long-duration M6.4 flare peaked at 18h15 UT. An R2 radio blackout affected the Americas.
My Space Weather Ops dashboard has received further updates and was deployed a few minutes ago.
In the lower right, every band on every path has a coded system to say if the band is open, if it's marginal or closed, and the reason. A calculated model predicts band openings under ideal conditions, but solar flares or polar cap absorptions can cause marginal or closed bands. A live connection to a DX cluster feed backs up the model with live band openings in the preceding 15 minutes.
Please click on the HELP button to see a comprehensive help guide.
Launch page:
https://www.tvcomm.co.uk/g7izu/space-weather-ops/
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/116/461/149/221/464/418/original/4bd82cb8b81866ff.mp4

2026-04-23 18:57:59 UTC

Space Weather
An M4.9 flare peaked at 17h08 UT 23 April. A minor R1 radio blackout affected the Americas and western Atlantic.
A slight reduction in HF radio traffic can be observed (DX Cluster radio contacts map). DRAP D-layer absorption is overlayed on the map.
#spaceweather
#radiopropagation
#amateurradio
#g7izu
https://media.universeodon.com/media_attachments/files/116/455/533/502/287/186/original/1ce9b2db3699dceb.mp4

2026-04-20 08:50:26 UTC

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Tsunami waves of up to 80cm have been observed reaching the coasts.
https://media.universeodon.com/media_attachments/files/116/436/174/219/909/210/original/df88c3b8385a5d0f.png

2026-04-20 08:16:11 UTC

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https://www.youtube.com/watch?v=f0lYkdA-Gtw
https://media.universeodon.com/media_attachments/files/116/436/039/635/780/349/original/606198455322edfa.png

2026-04-20 08:06:41 UTC

Earthquake
A large M7.4 earthquake has occurred off the east coast of Japan. A tsunami alert has been issued with potential waves up to 3m possible. Global quake estimation of M6.4 is not confirmed, that data is preliminary.
#earthquake #tsunami
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2026-04-18 08:39:59 UTC

Space Weather
Earth is now in the fast solar wind stream from a large trans-equatorial coronal hole.
A G2 geomagnetic storm is in progress. Aurora may be visible yo upper mid-latitudes now across Canada and Alaska.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/116/424/798/711/643/961/original/a45b18fd3baa3a2a.mp4

2026-04-16 20:28:24 UTC

Space Weather
A G2 geomagnetic storm watch is in effect for 17 & 18 April.
Earth will be coming under the influence of the fast solar wind from this large coronal hole, which is now facing towards us.
Strong aurora may combine with meteors from the annual Lyrids meteor shower, which peaks on 22 April, making for some stunning photo opportunities!
#spaceweather
#lyrids
#g7izu
https://media.universeodon.com/media_attachments/files/116/416/252/558/493/862/original/c7361c7ec80ce6a4.mp4

2026-04-07 20:15:32 UTC

Space Weather Unplugged
Learn all about solar flares and CMEs (and what makes them different from each other), from Nasa's Dr Becca Robinson. Dr Robinson also shares news about Nasa's Muse mission.
https://youtu.be/Kt6aVss4nho?t=193
#spaceweather
#amateurradio
#radiopropagation
#g7izu

2026-04-07 17:01:11 UTC

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Whilst using Claude AI to tweak the code, Claude openly admitted to being guilty of "AI slop" 😂
#aislop
#g7izu
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2026-04-07 15:13:42 UTC

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By the way, if anyone wants to run a side by side comparison with Voacap to determine any accuracy I'd be grateful for some feedback. Thank you!

2026-04-07 14:39:44 UTC

Space Weather Ops Dashboard
I've released another update today (version #260407.3).
The DRAP map includes a flashing indicator to show which base location is active in the path estimator table.
Two new (optional) columns have been added to the path estimator:
The GREYLINE column shows when the sunrise/sunset terminator is crossing the midpoint of a radio path — grey line conditions can briefly boost long-distance signals as the D-layer fades but the F-layer stays strong.
The ↓F number tells you how many solar flux units (SFU) conditions can deteriorate before your best open band closes — the lower the number, the more fragile the opening.
The ↑K number shows how much the geomagnetic storm index (Kp) can rise before the path degrades — useful during unsettled space weather when conditions can change quickly.
Please go to the launch page or reload the page to ensure you're using the latest version.
https://www.tvcomm.co.uk/g7izu/space-weather-ops/
#spaceweather
#radiopropagation
#amateurradio
#g7izu
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2026-04-01 22:58:48 UTC

Earthquake
Major M7.4 earthquake in Indonesia
#earthquake
https://media.universeodon.com/media_attachments/files/116/331/925/943/361/715/original/ef0ae927a583ed61.mp4

2026-03-31 19:30:01 UTC

Space Weather
A glancing blow from an incoming CME is still expected tonight. A NOAA G2 watch is in effect until 00h UT tonight. A G1 watch is in effect for 01 and 02 April. Impact is still expected late on the 31st or early on the 1st, although historically these events are never on time!
The UK Met Office is calling a G3 watch. This is a maximum expected level and not a promise!
The fast solar wind from a coronal hole to the west of the CME is constraining the CME's path and keeping it to the south-east. The wind acts as a barrier and guides the CME to some extent. The CME itself is tilted clockwise about 45°. Earth may catch the edge of the one of the "legs" of the CME, which stretch al; the way back to the sun as the CME expands outwards into the solar system.
#spaceweather
#g7izu
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2026-03-31 13:58:47 UTC

Space Weather
A G2 geomagnetic storm watch is in effect until 00h UT tonight.
A G1 watch is in effect for 01 and 02 April.
We're expecting a glancing blow from the CME launched by yesterday's X1.5 flare.
#spaceweather
#g7izu
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2026-03-30 21:29:39 UTC

Space Weather
The CME launched by this morning's X1.5 flare is likely to give Earth a glancing blow late on 31 March or early 01 April.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/116/320/247/175/690/898/original/395570c2218b30d8.mp4

2026-03-27 21:42:24 UTC

New Website Addition
I've just release a new space weather and amateur radio dashboard on my website.
"Space Weather Ops" is a collection of live data indicators, graphs and data panels showing live solar wind and information derived from the amateur radio DX Cluster.
Link to the launch page:
https://www.tvcomm.co.uk/g7izu/space-weather-ops/
#spaceweather
#amateurradio
#g7izu
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2026-03-23 23:06:32 UTC

UK Space Weather Policy
The Register: "The UK is ill prepared for a major catastrophic solar storm"
"In 2025, the government estimated a 5-25 percent chance of a severe space weather event by 2030. However, according to the NAO, the UK is not well prepared. Despite severe space weather being added to the UK's National Risk Register in 2011, and some investment in developing the country's forecasting capabilities, the NAO warned that the government "does not yet understand the full range of possible impacts and cascading effects well."
It has also not "yet set out how resilient it would like the UK to be to severe space weather, nor what level of resilience its spending will provide."
Read more:
https://www.theregister.com/2026/03/23/nao_uk_space_weather/
#spaceweather
#ukgov
#g7izu

2026-03-21 10:22:52 UTC

Space Weather
G1 geomagnetic conditions continue today following the CME impact yesterday evening. Further storming up to G2 levels is possible as further small CMEs reach Earth over the weekend.
The solar wind speed is moderate at 400-500km/s and IMF field strength (Bt) is strong at around 25.7nT.
Aurora was visible at high latitudes. Amateur radio operators also reported auroral contacts at high latitudes.
#spaceweather
#aurora
#g7izu
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2026-03-20 21:31:11 UTC

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Aurora Alert; Aurora is visible on a camera in Finland.
https://www.youtube.com/watch?v=bOEvPL206Hc
#spaceweather
#aurora
#g7izu
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2026-03-20 21:06:09 UTC

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Space Weather
An upgraded G3 Geomagnetic Storm WATCH is in effect.
A G2 Geomagnetic Storm is in progress; G3 Predicted
Comment: G3 (Strong) geomagnetic storming is likely due to combined CME effects from events that left the Sun on 16 and 18 Mar.
--- Issued: 2026-03-20 20:43 UTC by NOAA SWPC
#spaceweather
#aurora
#g7izu
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2026-03-20 20:32:10 UTC

Space Weather
CME Impact at last!
A G1 geomagnetic storm is in progress. The IMF (Interplanetary Magnetic Field) Bz component is strongly southward. Aurora may be soon be visible at high latitudes.
#spaceweather
#aurora
#g7izu
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2026-03-20 11:36:25 UTC

Radio Propagation
I know, it looks a bit like WW3 with the flashes at the start and end points, but I think it looks cool!
#radiopropagation
#amateurradio
#g7izu
https://media.universeodon.com/media_attachments/files/116/261/295/099/916/433/original/c6d55e10ba53fe60.mp4

2026-03-20 11:22:21 UTC

Radio Propagation
I made a thing!
With the help of Claude AI, I made a new mapping backend for LiveMUF.
The entire thing — 3D WebGL renderer, ionospheric physics, signal animation, Es detection, MUF modelling, band matrix, 2D map, live database connection — fits in a single HTML file of about 3,000 lines. No npm, no webpack, no dependencies beyond D3 and TopoJSON loaded from a CDN. A helper file interfaces with the LiveMUF SQLite database and forwards spots to the map as they appear. I'll need to work on a version for MySQL. It currently only runs on a PC which already has LiveMUF installed and capturing spots to a local database.
It renders propagation paths in realtime, projecting the signal path via realistic estimated bounce points around the globe. Ionospheric height is correctly rendered. Glowing areas appear at the reflection points and show sporadic-E clouds, coloured according to frequency (but not yet directly linked to the estimated MUF).
I'll follow up with more videos.
#radiopropagation
#g7izu
https://media.universeodon.com/media_attachments/files/116/261/198/573/460/878/original/8862e95a13b1b3b3.mp4

2026-03-12 10:12:26 UTC

Mouse, we miss you.
12.03.2025
#catsofmastadon
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2026-03-11 14:27:58 UTC

Light Pollution
I don't have the words to describe how bad of an idea this is. All they're interested in is profits, not the well being of the planet.
"FCC Deciding Whether to Allow Startup to Launch Huge Mirror Satellite to Blast Sunlight on Cities at Nighttime" https://share.google/yLgUCgB0CkwvrAWNL
#lightpollution
#g7izu

2026-03-06 20:24:30 UTC

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Ship AIS
China/Taiwan 👀
Note: These events have been witnessed several times over the past few months. Someone online suggested that they're "spoofed" objects and may not all be actual boats. Time will tell.
#shipais
#g7izu
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2026-03-06 12:04:25 UTC

Ship AIS
Meanwhile, between China and Japan in the East China Sea...
Some sources suggest this is practice for a blockade of Taiwan.
Live map: https://www.marinetraffic.com/en/ais/home/centerx:124.2/centery:33.3/zoom:8
#shipais
#g7izu
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2026-03-04 21:12:29 UTC

Amateur Radio
Does anyone know M0HAO? This OM is operating FT8 on 2m in the UK. He's spotting local contacts as "AUR" all over the place. Someone please have a word and encourage him not to spam the system?
#amateurradio
#g7izu
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2026-02-25 16:09:37 UTC

Space Weather
Breaking the silence: An M2.3 flare erupted from a new active region on the east limb, peaking at ~15h50 UT 25 Feb.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/116/132/131/957/103/040/original/40eff144c2db532a.mp4

2026-02-24 01:04:45 UTC

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Erm, absolutely not... 🥶

2026-02-23 22:13:24 UTC

Space Weather
The sun is spotless for the first time since 2022! This is definitely a sign that we're on the long slide back down to solar minimum. The official synoptic map is currently showing no active regions on the visible disc!
The calm may not last long as there are a number of active regions and unstable filaments on the far side and coming around the east limb. The radio bands are quiet now, but there's potential for filament eruptions in the coming days which will raise the radio noise and improve chances for aurora.
#spaceweather
#g7izu
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https://media.universeodon.com/media_attachments/files/116/122/223/152/917/846/original/ba08276114ec1ee0.png

2026-02-18 10:17:08 UTC

Space Weather
GOES-19's CCOR1 solar imager caught the moon dancing around the sun this morning, as seen in this timelapse.
Two far side CMEs are also visible, at 05h and 09h UT 18 Feb. A C1.5 flare occurred at the same time as the 05h CME but I couldn't find the source, so I assume it was off the limb.
The white flashes are likely caused by the limb of the Earth.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/116/091/097/559/686/082/original/b6cce73d35a1dec7.mp4

2026-02-17 12:39:44 UTC

Volcanic eruption: Mayon volcano in the Philippines is erupting in spectacular fashion.
See the live Youtube feed here; https://www.youtube.com/watch?v=UDAZWxehMAI
#mayon
#volcano
#g7izu

2026-02-08 15:40:47 UTC

Space Weather
Solar Flare Alert: There were three flares from AR4366 above M-level in the last few hours.
M1.7 @11h19 UT 08 Feb
M1.7 @11h47 UT 08 Feb
M2.7 @13h47 UT 08 Feb
The M2.7 flare was eruptive, producing a 10.7cm radio emission. There appears to be no earthward CME.
#spaceweather
#g7izu
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2026-02-07 18:30:17 UTC

Space Weather
AR4366 finally calmed down . It's not produced any flares greater than M-level for two days.
Geomagnetic conditions: Aurora has been visible at high-latitudes for a couple of nights. A new CME from AR4362 in the south-west quadrant (released by an M1.2 flare on 05 Feb) may impact Earth tomorrow 08 Feb. Twofurther minor CMEs, will likely cause disturbed conditions to continue through to 10 Feb.
#spaceweather
#g7izu
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2026-02-04 15:21:36 UTC

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Yes, that's where the CME originated from.

2026-02-04 14:41:24 UTC

Space Weather
CME Arrival: An interplanetary shock has been detected at ACE/DISCOVR (L1) indicating the arrival of the CME which originated from the X8.1 flare late on 01 Feb. The IMF strength is 22nT.
A G1 geomagnetic storm warning is in effect for 05-07 Feb (UT).
#spaceweather
#aurora
#g7izu
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2026-02-04 12:27:07 UTC

Space Weather
Solar Flare Alert: A strong X4.2 flare peaked at 12h10 UT 04 Feb. This is the second strongest X-flare over the last four days.
#spaceweather
#g7izu
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2026-02-03 12:17:34 UTC

Space Weather
CME update: NOAA (US) and Euphoria (European) solar wind models suggest the CME imact could be a little later than the early NASA model predicted.
NOAA suggests a double hit, initially late on 5th Feb, with a higher peak around midday (UT) on the 6th. Euphoria suggests a single hit during the morning of the 6th.
Solar Flares: There have been around 19 flares exceeding M level since 10h UT 02 Feb (yesterday). The largest was an M7.2 peaking at 07h UT 02 Feb.
AR4366 continues to be very active. It's looking a little less potent now but the potential for large flares continues.
#spaceweather
#g7izu
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2026-02-02 16:39:50 UTC

Space Weather
CME update: Early indications suggest the CME impact from last nights' X8.1 flare will arrive in the first half of 5th Feb. The strength of the CME is very uncertain, but G2 levels are possible.
The CME was launched with a velocity of approx 520km/s.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/116/002/019/287/685/934/original/98da045467c00019.mp4

2026-02-02 10:38:59 UTC

Space Weather
Solar Flare Alert: Multiple large X-Flares
Apologies to BSky readers who will see this message split over multiple posts.
My XRay Flux Colourgram has lit up like a Christmas tree over the last 24 hours, all thanks to active region AR4366. This region has gone bonkers with activity since it appeared a few days ago. The region is Beta-Gamma-Delta, meaning that X-flare activity was a possibility. It's lived up to the promise!
It's worth noting that flares peaks are denoted by the highest XRay Flux values. In this case, AR4366 has been continually eruptive. Tagging every peak to an explosive eruption may not be accurate in terms of saying "there were this many flares above a certain value". Ongoing eruptions can just cause the flux value to vary up and down. With the flux "floor" now up above M-level, I've only listed peaks above M2.
Summary since 10h 01 Feb >M2:
XRay Flux Peak time (UT)
M6.6 10h00 01 Feb
M2.4 10h40 01 Feb
M6.7 12h10 01 Feb
X1.0 12h30 01 Feb
M5.8 12h50 01 Feb
M5.1 16h05 01 Feb
M2.5 17h55 01 Feb
M2.1 18h15 01 Feb
M2.2 20h30 01 Feb
X8.1 23h55 01 Feb*
X2.8 00h35 02 Feb
M5.2 02h50 02 Feb
M3.0 04h45 02 Feb
M2.3 05h25 02 Feb
X1.6 08h15 02 Feb
*A large radio burst and CME were observed with the X8.1 eruption. Earth may receive a glancing blow from the CME in a few days, so stay tuned for further updates.
HF radio conditions: Lower frequencies are feeling the effects of the high XRay flux with periodic blackouts between R1 and R3 on the daylight side. Conditions are likely to remain poor for the next week. Radio noise will be severe and may increasing during the next 3-5 days as further active regions rotate into view.
#spaceweather
#g7izu
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2026-02-01 16:15:30 UTC

Space Weather
Long duration flare continues!
The flare dropped below M level for a while, but peaked again at M5.2 at ~16h UT.
An R1-R2 radio blackout is still affecting South Atlantic and South American regions.
There's currently no sign of a CME.
#spaceweather
#g7izu
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2026-02-01 13:05:39 UTC

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Space Weather
Solar Flare Alert: Long duration event
The earlier flare has continued, reducing to M1.0 at 11h30 UT then rising again to X1.1 at 12h30 UT 01 Feb. The XRay flux is now unsettled, varying between M4 and M6 levels.
An R2-R3 radio blackout is affecting southern Africa, South Atlantic and South American regions.
#spaceweather
#g7izu
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2026-02-01 11:29:22 UTC

Space Weather
Solar Flare Alert: A M6.6 flare peaked at 10h03 UT 01 Feb from AR4366 (the active region I mentioned last night). A moderate R2 radio blackout affected the south of Africa.
#spaceweather
#g7izu
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2026-02-01 08:17:29 UTC

BBC News - Musk's SpaceX applies to launch a million satellites into orbit
https://www.bbc.co.uk/news/articles/cyv5l24mrjmo
🫣

2026-01-21 23:18:32 UTC

Space News: SciTechDaily
2.8 Days to Disaster: Low Earth Orbit Could Collapse Without Warning
"A new analysis suggests modern satellite networks could suffer catastrophic collisions within days of losing control during a major solar storm."
Read article:
https://scitechdaily.com/2-8-days-to-disaster-low-earth-orbit-could-collapse-without-warning/
#spacenews
#g7izu

2026-01-21 22:02:27 UTC

Space Weather
The fun is over for now, the solar storm has ended. The solar radiation storm has also reduced below S1 level this afternoon (UT), having reach up to S4 level.
It was a complicated storm because there were actually several CMEs launched, with the large coronal hole squeezing the trajectories. Space weather scientists will be pawing over the data for months to come!
What is clear is that things could have been a whole lot more exciting, because when the initial storm front hit us at 19h UT on 19 Jan, the Interplanetary Magnetic Field (IMF) Bz was strongly positive, at more than 55nT. This reduced the impact significantly, but had it been negative we could have been looking at numerous electrical grid outages, satellite disruption and more.
It wasn't until a few hours later that the Bz swung south for a long period, giving hours of stunning aurora stretching well into the mid-latitudes.
#spaceweather
#g7izu
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2026-01-20 17:05:33 UTC

Space Weather
Current contact reports by amateur radio operators via auroral mode across Europe. Strong geomagnetic storm conditions continue.
#spaceweather
#aurora
#g7izu
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2026-01-20 10:23:26 UTC

Space Weather
Geomagnetic storm continues...
These graphs are pretty incredible.
#spaceweather
#aurora
#g7izu
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2026-01-20 08:37:58 UTC

Space Weather
Geomagnetic Storm: We're back up to G4 conditions again! The solar wind speed is still up near 1,000km/s.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/115/926/513/506/962/630/original/7a993bdebf488075.jpg

2026-01-19 21:39:44 UTC

Space Weather
A few webcam captures from Northern latitudes. Seasoned space weather people are saying WTF! This event is off the scale in many respects.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/115/923/929/108/192/695/original/f5738029b48db15d.jpg
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2026-01-19 19:57:54 UTC

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Space Weather
The threshold for G4 geomagnetic storm has been reached.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/923/535/733/650/352/original/5e14cea9984e6c6d.jpg

2026-01-19 19:32:09 UTC

Space Weather
The CME has arrived! It's a biggie!
#spaceweather
#g7uzu
https://media.universeodon.com/media_attachments/files/115/923/425/940/235/976/original/60c984b9df162e17.jpg

2026-01-19 18:59:06 UTC

Space Weather
An severe S4 solar radiation storm is in progress.
#spaceweather
#g7izu
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2026-01-19 12:40:12 UTC

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Space Weather
NOAA SWPC has finally posted an ENLIL prediction. A G4 watch is in place for the next 24 hours.
The low velocity data in my previous post may be an error due the ACE satellite possibly being affected by the S3 solar radiation storm (this is conjecture on someone's part).
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/921/798/109/602/109/original/3eb1b5832ca568e0.jpg

2026-01-19 11:06:44 UTC

Space Weather
A strong S3 solar radiation storm is in progress.
#spaceweather
#g7izu
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2026-01-18 23:11:18 UTC

Space Weather
The X-ray flux has finally fallen below M-level after more than four hours, following the earlier X1 9 flare.
A minor S1 solar proton radiation storm is now in progress. HF conditions in polar regions will start to be affected.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/918/609/191/647/806/original/013bc0fef363bd5d.jpg
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2026-01-18 21:56:05 UTC

Space Weather
Goes 19 CCOR-1. A full halo CME is visible, as well as a suspected second CME with the bulk of material heading off to the left. This will be an interesting solar storm.
Early indications are suggesting CME impact at Earth during the night of 19/20 Jan (UT).
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/918/315/084/856/481/original/5a81cff32f4bbcca.mp4

2026-01-18 21:38:28 UTC

Space Weather
The >=10MeV proton flux is rising.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/918/256/981/653/638/original/23839fc175e68138.png

2026-01-18 19:27:48 UTC

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Space Weather
The flare is now down to M7.9, but is taking its time reducing. The Xray flux was above X level for just over an hour, with the flare peaking at X1.9 at 18:h UT 18 Jan.
Type II and type IV radio emissions were observed. A halo CME was observed, with the bulk going to the east. Modeling in the next 24 hours should determine roughly how much will reach earth. There's back-room talk of G4 strength storms, but it's a little early to determine yet.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/917/699/400/029/840/original/9e81d366825c20d9.png
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2026-01-18 18:39:46 UTC

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Space Weather
A significant radio burst reaching 10-12 GHz was associated with this flare, which was now clocked at ~X1.9. That would have affected GPS and Starlink so some extent.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/917/547/603/414/276/original/78db2d29065598c1.png

2026-01-18 18:25:47 UTC

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Space Weather
The flare from AR4341 is currently plateauing at X1.8 and slowly starting to reduce.
Early indications are showing the possibility of two CMEs (coronal mass ejections), probably with a significant Earthward component.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/917/477/604/796/141/original/02935bb8e9da579a.png
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2026-01-18 17:59:49 UTC

Space Weather
Solar Flare Alert: A significant solar flare is in progress. Xray flux is now at X1.6 and is rising.
A strong R3 radio blackout is affecting S America/Pacific regions.
A significant radio burst is associated with this flare.
This is an earth-directed event. A CME is being observed. Stay tuned for further details.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/917/392/584/683/216/original/d7fa26f839df6e56.png
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2026-01-11 23:39:55 UTC

Space Weather
A long duration flare peaked at M3.2. The flux is still above M3 after approximately one hour!
The flare appears to be from a region on the edge of the east limb.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/879/094/525/632/533/original/888c4ca1f37d8082.png
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2026-01-10 19:27:02 UTC

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Space Weather
Aurora is visible on a camera in Northumberland, UK
A geomagnetic storm is in progress.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/115/872/443/407/463/417/original/8485f1eb392a3591.png

2026-01-10 18:41:21 UTC

Space Weather
Amateur radio operators are reporting contacts via the aurora down to ~54°N over the UK.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/115/872/248/819/133/115/original/66e47b81caf02628.png

2026-01-08 20:53:42 UTC

Space Weather
The fast solar wind from a large coronal hole has just reached Earth. Aurora may be visible at high latitudes.
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/115/861/445/130/584/295/original/4ff37091c3caa318.png
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2026-01-05 00:03:42 UTC

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Terrestrial Weather
If anyone was in any doubt at all about how this winter is going, take a deep dive into what's driving our weather. We may have gotten into a rut with ever increasing temperatures, but extremes still happen! Pull on another duvet and enjoy this read.
https://www.severe-weather.eu/global-weather/arctic-cold-blast-winter-storm-snow-bomb-forecast-europe-january-2026-mk/
#weather
#polarvortex
#uksnow
#g7izu

2026-01-01 00:55:55 UTC

Space Weather
Happy New Year!
The M7.1 flare on 31 Jan triggered a large CME which is expected to affect Earth on or around 03 Jan.
A moderate G2 storm watch is in effect for 03 Jan. Minor G1 watches are in effect 01 & 02 Jan.
#spaceweather
#g7izu
https://media.universeodon.com/media_attachments/files/115/817/113/828/329/370/original/ad4826fcadf30d82.mp4

2025-12-31 14:36:53 UTC

Space Weather
A moderate M7.1 solar flare from almost earth-facing region AR4324 peaked at 13h48 UT 31 Dec. An R2 radio blackout affected the South Atlantic region. Type II, type IV radio emissions and a 10cm radio burst was detected. These mean it's likely that we have an Earth-directed CME on the way! Further details will come once we know more.
#spaceweather
#g7izu
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2025-12-28 16:02:47 UTC

Terrestrial Weather
By the law of averages, they had to get at least one headline per decade right!
It's looks like the UK will get a good taste of "proper" winter in a couple of weeks!
#weather
#g7izu
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2025-12-27 14:03:40 UTC

Space Weather
The Auroral Activity Now aurora hunting page has been updated (again!)
It now has an exciting new function: Pushover alerts!
Pushover can send messages and alerts from webpages and apps to your mobile devices. If you leave the Auroral Activity Now page open (or minimised) on a desktop pc, for example, any aurora alerts will be sent to you mobile device (where ever you are!) The downside is that your PC or device with the page must remain on and connected to the net. Add an app like Speaki on your mobile and you can have speech alerts announcing the activity out loud! Impress your friends! Get embarrassed in business meetings! 😁
You'll need a Pushover account on the minimum tier ($4.99 one-time payment). Speaki is free.
Disclaimer: I'm promoting these apps because they are useful. I'm not receiving any payment to suggest them!
Go here for further instructions:
https://www.tvcomm.co.uk/g7izu/auroral-viewing-probabilities/
#spaceweather
#aurora
#g7izu
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2025-12-23 18:46:02 UTC

Space Weather
A moderate substorm is in progress over Finland
https://www.youtube.com/watch?v=AvKdtZIb-6c
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/115/770/360/225/110/393/original/2f63f6cda768cbe4.mp4

2025-12-22 21:40:18 UTC

- reply

Space Weather
Aurora and amazing light pillars are visible on a camera in Finland.
Light pillars are caused by light from street lights etc. reflecting from ice crystals in the atmosphere.
https://www.youtube.com/watch?v=bOEvPL206Hc
#spaceweather
#aurora
#g7izu
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2025-12-22 20:12:25 UTC

Space Weather
A strong geomagnetic sub-storm is in progress. High-latitude and upper mid-latitude aurora is possible now. G1 storm conditions are in progress. The Bz is currently neutral, but has been a bit erratic most of the day.
The solar wind is quite disturbed due to the onset of a fast solar wind, brought on by a coronal hole.
#spaceweather
#aurora
#g7izu
https://www.tvcomm.co.uk/g7izu/auroral-viewing-probabilities/
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2025-12-22 11:57:49 UTC

Space Weather
My aurora hunting web page has been updated to be more sensitive and reactive to sub-storms.
This is the current page captured at 11h45 UT, along with a very recent webcam image from Fairbanks, Alaska from just over an hour before. The aurora has weakened since the image was captured.
"Auroral Activity Now" is a web page designed for aurora hunters and aurora tour operators. Open the page on a tablet or screen displayed in the lounge of your hotel or guesthouse! No need to go outside until the alarm sounds! No bloatware, just pure coding to process the data feeds.
Auroral Activity Now:
https://www.tvcomm.co.uk/g7izu/auroral-viewing-probabilities/
#spaceweather
#aurora
#g7izu
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2025-12-21 18:11:34 UTC

Space Weather
G1 Geomagnetic storm - aurora in Finland now looking amazing!
https://www.youtube.com/watch?v=AvKdtZIb-6c&pp=ygUMYXVyb3JhIGFsZXJ00gcJCU8KAYcqIYzv
#spaceweather
#aurora
#g7izu
https://media.universeodon.com/media_attachments/files/115/758/893/550/809/265/original/ea13555fe0b7b2e6.mp4

2025-12-19 21:55:10 UTC

Space Weather
Another large trans-equatorial coronal hole is almost facing Earth. We can expect increased geomagnetic conditions in around 3-4 days.
An M1.0 flare peaked at 15h50 UT. This was the first flare exceeding M1 for over a week.
#spaceweather
#g7izu
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2025-12-19 00:40:08 UTC

Space News
SpaceX reports loss of a Starlink satellite following a "kinetic" anomaly.
The company said the satellite, one of nearly 10,000 in space for its broadband internet network, quickly fell four kilometers in altitude, suggesting some kind of internal explosion occurred on board.
Tracking organisation LeoLabs has reported "tens" of pieces of debris. What remains will re-enter the atmosphere "within weeks".
Read more: Reuters https://share.google/f1065d0t4LxLbAGlK
#spacex
#starlink
#reuters
#g7izu