#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 G1 (minor) geomagnetic storm is continuing. A G2 watch is in effect for tomorrow (09 Sept).
A minor electron storm reached L1 at 13h UT. Electron flux rates at GOES (in geostationary orbit) may be peaking around now (18h UT), but flux rates at L1 are increasing again so this is one to watch.
The sun remains very active with some flare players rotating Earthwards in the coming days. We may also be under the influence of a coronal hole which is currently facing Earthwards, so expect further radio blackout, HF band degradation and good chances for aurora at high latitudes.
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Space Weather
The geomagnetic storm strength reached G1 (minor) level at 07h30 UT this morning.
Further bursts of substorm activity will continue as this storm progresses, giving further opportunities to see aurora at the higher latitudes.
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Space Weather: Geomagnetic Storm Update
Geomagnetic activity is continuing to build as a number of CMEs reach Earth. Aurora has been seen at high latitudes.
The 1-minute Kp level is currently below G1 level (Kp4) but it's likely to exceed that soon. The DST (Disturbance Storm Time index) is falling quickly and is now at -47nT, showing that the ring current is charging up.
Amateur radio operators at high latitudes have reported auroral radio contacts over Scandinavia.
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Space Weather
Disturbed geomagnetic conditions are continuing.
Significant solar wind dynamic pressure of 30 cm^3 is being recorded at L1, along with a marked negative Bz swing to ~ -12nT.
Solar wind speed has jumped above 500km/s. The DST (Disturbance Storm Time Index) peaked positive due to the initial compression from the CME impact, but it's now swinging negative as the ring current intensifies. Later, as the storm peaks, energy will be released via magnetic reconnection in the magnetotail, shooting accelerated electrons Earthward along field lines to trigger substorms and hopefully aurora.
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Space Weather
CME arrival: The first CME in a potential series has arrived overnight - somewhat earlier than predicted.
IMF Bz is strongly southward and substorms are now hitting polar regions.
HF radio will be degraded at high latitude and polar regions - aurora is possible.
Space Weather Ops Dashboard:
https://www.tvcomm.co.uk/g7izu/space-weather-ops/ -
Space Weather [dates edited]
Incoming Solar Storms: In recent days several active regions on the sun have launched many CMEs (coronal mass ejections). Only a small number of these appear to be Earth-directed. AR4520 launched an M1.0 flare which produced yesterday's high-energy proton storm.
Three CMEs seem likely to reach Earth starting late on 07 Sept or early 08 Sept. Geomagnetic storm conditions may cause aurora to mid-latitudes.
Conditions will remain disturbed for a day or two. Further flare activity is likely during the coming week.
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GB Grid Monitor: One for the data geeks!
You may know that I recently created an energy and environment dashboard that's available to download on Github.
Over the last week or so I've made some significant upgrades to the dashboard's monitoring and data logging functions. For example, local weather alerts are now enhanced. Rain is tracked nearby and alerts are spoken when rain is due at your location through the use of Environment Agency rain gauges. Mobile "Virtual" rain gauges are deployed to track and confirm incoming rain using Open Meteo and Open Weather Maps APIs. If using a VPN the API limits may be hit very quickly, so try to exclude Python from the VPN by using split-tunneling, or switch off the VPN.
The electricity grid monitoring is enhanced and includes a "system risk index". This monitors system inertia and alerts for when the system is particularly at risk of collapse - the function is calibrated against NESO's own data. Despite official statements, the grid is in a very precarious state at the moment due to rate of decarbonization and the shift to renewables. If the grid frequency moves outside of the statutory limits you hear annoyingly loud alarms (annoying only for your non-geeky other half, that is!)
If a collapse is imminent and the data reaches you before the power goes off, you may get a few seconds' notice before it all goes black.
Data logging is now in place so that historical electricity data can be plotted as 7-day graphs, with data available since 2017 - great for researchers! Frequency plots from upto the last 30 days can be captured to image files via the frequency "history" plot (assuming the app was running to capture the data). Generator plots are back-filled from online archives so can fill in if the app wasn't running.
For the best experience please read the "readme file" before using.
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Sun, moon and Earth
Despite around 71% of the UK being under a drought warning, the UK's Environment Agency has issued 13 flood warnings during the last day or two.
The warnings are actually for coastal and estuary areas, thanks to the very high "spring" tides which may cause over-topping of sea defenses.
The sun, moon and Earth are still more or less in line following Wednesday's total eclipse.
If you're near coastal regions in the UK check the UK Gov website for flood warnings:
https://check-for-flooding.service.gov.uk/alerts-and-warnings
Porlock webcam: