#g7izu โ Public Fediverse posts
Live and recent posts from across the Fediverse tagged #g7izu, aggregated by home.social.
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Space Weather
A G2 Geomagnetic storm is in progress. Aurora may be visible to the upper mid-latitudes.
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Space Weather
A G2 Geomagnetic storm is in progress. Aurora may be visible to the upper mid-latitudes.
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Space Weather
A G2 Geomagnetic storm is in progress. Aurora may be visible to the upper mid-latitudes.
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Space Weather
A G2 Geomagnetic storm is in progress. Aurora may be visible to the upper mid-latitudes.
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Space Weather
A G2 Geomagnetic storm is in progress. Aurora may be visible to the upper mid-latitudes.
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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.
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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.
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Space Weather
An M5. 79 flare peaked at 13h38 UT 10 May. A moderate R2 radio blackout affected Europe and N Atlantic regions.
Type II and 10.7cm radio emissions were observed, indicating the release of a CME, which turned out to be a significant CME, as seen in Lasco imagery. The flare occurred from the north-west limb so the CME was not Earth-directed.
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Radio Propagation
Some signs today that the N Hemisphere Es season is starting soon as the MUF climbs across the Mediterranean region.
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Space Weather
All quiet again. Electron and proton levels are slightly elevated.
Need a space weather and amateur radio dashboard?
https://www.tvcomm.co.uk/g7izu/space-weather-ops/ -
Space Weather
A G2 geomagnetic storm is in progress. Aurora may be visible a high- and upper mid-latitudes.
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Radio Propagation
Strong tropo conditions in Northern Europe now. A good time to test the new ultra wide monitor! ๐
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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.
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Radio Propagation
A ridge of high pressure pushing down the North Sea is creating ideal conditions for some strong tropospheric propagation.
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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!
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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!
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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!
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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!
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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!
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Website/Radio Propagation
I've updated my DX Cluster monitor so that it can capture images from the Mercator map view. Up until now my propagation maps have been circular. These are square!
Up to 12 different maps can be captured.
Update: The live examples have been taken down as I continue to develop these features.
#amateurradio
#radiopropagation
#g7izu -
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.
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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 โ grey line conditions can briefly boost long-distance signals as the D-layer fades but the F-layer stays strong.
The โF number tells you how many solar flux units (SFU) conditions can deteriorate before your best open band closes โ the lower the number, the more fragile the opening.
The โK number shows how much the geomagnetic storm index (Kp) can rise before the path degrades โ 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.
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Website
My Space Weather Ops page has been worked on today and had a number of changes bug fixes.
One big update is that there are now double the number of base regions available in the Path Estimator (22 instead of the original 11). There are also new columns for the propagation modes which are active on each path, although I suspect this feature still has some errors, particularly around TEP path estimation.
A small but important change is that the FLARE chip on the very top line now shows the maximum X-ray flux in the last hour instead of the live value as seen in the box below it, so if you've glanced away you can still see the highest flux value reached.
A fault on the D-Rap map background was fixed, along with numerous backend fixes.
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Radio Propagation
And here we see the fly-through with the 10m band added to the mix.
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Radio Propagation
Here's the 2D version as rendered by LiveMUF.
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Radio Propagation
Sporadic-E clouds over Eastern Europe have raised the MUF towards 100 MHz.
Here we see 6m Es and 2m tropo spots in 3D.
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Radio Propagation
3D fly-through showing 10m and 6m propagation between South and North America, recorded just now.
The orange clouds (which are drawn a bit too bright!) denote zones of signal refraction for TEP (Trans-Equatorial-Propagation).
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Space Weather
Aurora reported by amateur radio operators down to ~50ยฐN over Europe.
A G1-G2 geomagnetic storm is in progress.
Radio propagation on HF has taken a hit at the higher latitudes thanks to the storm.
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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.
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Radio Propagation
The VHF/UHF FT8 Activity Contest kicked off at 18h UT. See the contesters on this flythrough over Europe. 2m band contacts are the red lines, and as the contacts are mostly tropospheric, the signals are hugging the surface of the planet within a few km.
It's fitting that Dave, G7RAU (author of LiveMUF) is one of the contacts seen in this video (at the bottom end of Cornwall).
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Radio Propagation
My Ionospheric Path Monitor has been adjusted to plot chordal hops correctly using accepted physics. Signals across the equator usually stay airborne for a considerable distance before coming back down to earth.
New orange "glow zones" show the potential zones for the airborne reflections from the ionosphere at around 400km altitude.
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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!
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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, but the higher bands are fading as the sun sets.
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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!
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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.
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Radio Propagation
You can use filtering to check the propagation for a single station, region country or continent.
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Radio Propagation
Another demonstration fly-through using live data, recorded at 18h UT 28 March.
This time, only the 80m, 40m and 20m bands are selected.
We see the lower frequencies, mostly on the night-side of the planet, 10m on the day side. The lower frequencies are refracting from lower ionospheric layers than the higher frequencies do.
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Radio Propagation
While we wait for the sporadic-E season to get going properly, here's a demonstration fly-through of this afternoon's global 10m to 2m band propagation, recorded live from amateur radio DX Cluster data with a five-minute cadence, at 17h07 UT 28 March.
The yellow lines denote 10m contacts. As you can see, there's not much going on above the 10m band at the time of the recording. All the lower bands have been supressed so as to make 10m clearer.
The number of hops and reflection locations any particular signal path makes are estimated and not real, but is based upon real factors such as ionosphere height, propagation mode and the MUF. Different frequencies reach different heights, as future videos will show.
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Radio Propagation
Sporadic-E: High MUF upto FM band 2 is continuing over SE Europe this afternoon, as dusk approaches.
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Radio Propagation
Early season sporadic-E has raised the MUF over south-east Europe today.
This 3D fly-through was created using a new mapping backend for G7RAU's Live MUF that I created. It runs in a web browser and is under test.
Similar to the maps on my website, line colour indicates frequency. The coloured blobs show areas of high MUF (sporadic-E clouds). Purple is showing Band 2 FM reception via sporadic-E, yellow is the 10m band. As new spots appear, you see the lines propagating between ground and ionosphere as they bounce around the world.
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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/ -
Radio Propagation
Here we see all amateur bands enabled and spots from only the last minute visible. Each band is coloured according to the scale above.
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Radio Propagation
A different perspective on radio path propagation!
This is an application I'm working on to display live DX spots on a 3D globe. Here we see the 10m to 2m bands with a live aurora layer.
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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
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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
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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
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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
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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
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Space News
Hearing about the sad loss of contact with the MAVEN spacecraft reminded me that following my visit to KSC to see the launch, I made a 45 minute video about my amazing experience.
Meeting such an amazing group of space enthusiasts was something that evoked an emotion that has never left me, and I will be with me for the rest of my life. You feel passion, joy and a very strong bond with these people.
If you have 45 minutes free, I invite you to watch "What is a NASA Social", by me G7IZU. Throughout the video I insert tweets from the group as they occurred in "realtime". For non-UK viewers, the occasional appearance of a small yellow stuffed bear is related to a live charity TV programme made every November by my employer (BBC) called Children In Need. The bear, Pudsey, is its mascot.