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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
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#amateurradio
#radiopropagation
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Part of a conversation with Claude AI (including my spelling mistakes): Claude AI: Shall I implement that with a latitude-dependent window — 45 minutes for mid-latitude paths, relaxing toward 90 minutes when either endpoint is above 55° latitude?Yes, if you're sure. User: Whay di you suggest 2 hours in the first place if it's too wide? Claude AI: Honestly, I was being too conservative when I first wrote it — trying to avoid false negatives (missing a real grey line) and not thinking carefully enough about the physics. I should have reasoned through the D-layer recombination timescale and terminator speed before picking a number, rather than choosing a round figure that felt "safe." That was sloppy and I should have got it right first time. Sorry about that. Yes, I'm confident in the 45-minute / latitude-dependent approach. Let me implement it.
Whilst using Claude AI to tweak the code, Claude openly admitted to being guilty of "AI slop" 😂
#aislop
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https://www.tvcomm.co.uk/g7izu/space-weather-ops/
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#radiopropagation
#amateurradio
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Xray FLux plot by Space Weather Live
NASA/SDO AIA 131 showing the M7.1 flare at 01h07 UT 04 April 2026
Space Weather
Region AR4409 has been busy popping off one moderate and two minor flares in the past 12 hours.
Peak times on 04 April:
M7.5 01h07 UT R2 HF blackout
M1.7 07h56 UT R1 HF blackout
M1.3 12h10 UT R1 HF blackout
On CMEs were observed.
#spaceweather
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Radio Propagation
And here we see the fly-through with the 10m band added to the mix.
#radiopropagation
#amateurradio
#g7izu
Video: https://universeodon.com/@g7izu/116346396858112663
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Radio Propagation
Here's the 2D version as rendered by LiveMUF.
#radiopropagation
#amateurradio
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Radio Propagation
Sporadic-E clouds over Eastern Europe have raised the MUF towards 100 MHz.
Here we see 6m and 2m spots in 3D.
#radiopropagation
#amateurradio
#g7izu
Video: https://universeodon.com/@g7izu/116346352850498364
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Space Weather Ops dashboard at 22h38 UT 03 April 2026
Space Weather
Geomagnetic conditions have calmed and are now at G1 levels.
Solar wind speed is is just under 700km/s with the Bz between 0 and -5nT.
#spaceweather
#aurora
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Space Weather
Despite a very strong AE (auroral electrojet) and a solar wind speed of 711km/s, the IMF is now in positive territory, meaning very little or no aurora for the time being 😠
#spaceweather
#aurora
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A strong G3 geomagnetic storm is in progress. Aurora may be visible at lower mid-latitudes.
Aurora is being reported by amateur radio operators down to ~52°N over Europe.
#spaceweather
#amateurradio
#aurora
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Space Weather
G3 geomagnetic storm conditions are expected soon!
#spaceweather
#aurora
#g7izu
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Space Weather Ops dashboard
Space Weather
Earth is now in the influence of the very fast solar wind from a coronal hole. The solar wind speed is exceeding 800km/s.
The IMF Bz has swung south to ~ -10nT, causing G1 geomagnetic storm conditions. Aurora is being reported at high latitudes.
#spaceweather
#aurora
#g7izu
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Amateur radio auroral contacts (LiveMUF)
Kiruna magnetometer
Kyoto auroral electrojet
Space Weather
Aurora reported by amateur radio operators down to ~50°N over Europe.
A G1-G2 geomagnetic storm is in progress.
#spaceweather
#radiopropagation
#aurora
#g7izu
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Space Weather
Radio propagation visualised in 3D! Two examples of auroral propagation on the 2m band caught on my Ionospheric Path Monitor just now.
#spaceweather
#radiopropagation
#aurora
#g7izu
Video: https://universeodon.com/@g7izu/116336162293607558
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Auroral contacts via amateur radio (LiveMUF) 14h-17h UT 02 April)
Space Weather
Mid-latitude aurora reported down to ~52°N by amateur radio operators.
A G1 geomagnetic storm is in progress.
#spaceweather
#aurora
#g7izu
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The earlier mentioned coronal hole just to the west of the flare location is restraining the westward extent of the CME. We'll see the fast solar wind from the coronal hole in a couple of days.
#spaceweather
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Space Weather
CME impact detected at L1
Late as usual, the CME has arrived at L1. Effects at Earth should be expected in 45-60 minutes. Bz is currently slightly southward.
#spaceweather
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Link to the launch page (use this to always get the latest version of the page):
https://www.tvcomm.co.uk/g7izu/space-weather-ops/
#spaceweather
#g7izu
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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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A barren, dark landscape with aurora playing in the sky. A post in the foreground has a yellow warning sign at the top with the text "G2 Geomagnetic Storm Watch"
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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Radio Propagation
It's the evening in Australia and Japan, early morning in Western Europe. This is what the 10m band is doing right now, based upon DX CLuster reports.
Radio propagation visualised!
#radiopropagation
#amateurradio
#g7izu
Video: https://universeodon.com/@g7izu/116322888877284471
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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
Video: https://universeodon.com/@g7izu/116320251366626675
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Radio Propagation
The 10m and 6m bands now have openings between Europe & Middle East to S America, and USA to S America.
#radiopropagation
#amateurradio
#g7izu
Video: https://universeodon.com/@g7izu/116319933940486343
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Radio Propagation
The 10m band is now active between Europe and everywhere across the Atlantic. The vast majority of these contacts are FT8 mode.
#spaceweather
#amateurradio
#g7izu
Video: https://universeodon.com/@g7izu/116319067616561998
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Radio Propagation
Meanwhile, if you drop down to the 15, 17 and 20m bands, you'll get all the N American DX you need!
#radiopropagation
#amateurradio
#g7izu
Video: https://universeodon.com/@g7izu/116318517147871240
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Radio Propagation
10m band (28 MHz) radio propagation between Europe and N America is poor this afternoon. From Europe, the band is open to S America, S Africa and the Far East.
#radiopropagation
#amateurradio
#g7izu
Video: https://universeodon.com/@g7izu/116318480857534829
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