#solarcycle25 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #solarcycle25, aggregated by home.social.
-
It's the WEEKEND and right on cue, R1-R2 (Minor-Moderate) solar flare events remain probable through the weekend (Aug 23-25th EDT). Many sunspot groups are present as solar cycle 25 continues.
#solarcycle25 #solarflares #solarstorms #radioblackouts #amateurradio #hamradio
-
My #amateurradio #hamradio activities have come to a standstill. If it's not one, it's the other. Never both at the same time. Can't catch a break. #solarcycle25 #spaceweather #spacewx #solarstorm #solarstorms #SolarFlare #SolarFlares #radioblackouts #thunderstorms #flashflood #flashfloods
-
#AmateurRadio #hamradio operators, here's the #SolarCycle25 #Spaceweather #Spacewx forecast for the North American CW QSO Party #NorthAmericanCWQSOParty this weekend. #CW #MorseCode #SolarFlare #Solarflares #Radioblackouts #RadioBlackout
R1-R2 (Minor - Moderate) level solar flares continue to be expected into the weekend (1 - 4 August). There is also a continuing chance for an R3 (Strong) event. Details at
-
So, even though #AR3664 is no longer #EarthFacing, we may not be out of the woods yet...
via #SpaceWeather . com
"CMEs emitted by the departing sunspot [#AR3664] are no longer flying toward Earth. At most only glancing blows are likely from eruptions on May 12th through 14th.
"The danger could return on May 15th, however. On that date the sunspot will pass through a region of the sun magnetically connected to Earth via the #ParkerSpiral. Subatomic debris (protons and electrons) from explosions on May 15th and 16th could spiral back to Earth and rain down our planet. This is called a 'radiation storm;' it can upset #satellite #electronics and cause polar #RadioBlackouts. "
-
I'm not sure what's going to happen, but I plan on making sure all my electronics are turned off and disconnected, and might put some of them in a makeshift #FaradayCage until after the #CMEs hit Earth. I'd like to think utilities and such will have learned from warnings from 2013, but then again, it's the human race we're talking about. Unless there's a buck to be made, we seem to be woefully unprepared for stuff that can happen -- unfortunately...
"If a massive CME were spotted, such 3-day forecasts give us some lead time: there are some measures #ElectricUtilities could take to protect their equipment, such as quickly disconnecting #transformers. Polar flights, which travel at the highest altitudes, could be rerouted to avoid contact with damaging solar particles, and some #satellites could be switched into a #SafeMode to minimize damage. Here on Earth, at the very least, we’d have some time to prepare for potential power #blackouts and other problems."
#SolarFlare #SolarFlares #SolarCycle25 #CannibalCME #CannibalCMEs #CarringtonEvent #CMEs
-
Solar storms could cause train accidents, scientists warn
Story by Andrew Griffin, December 11, 2023
“#SpaceWeather – changes in the atmosphere that include blasts of energy from the Sun – can disrupt everything from communications to #PowerGrids. Scientists have repeatedly warned that the Earth faces potentially catastrophic danger from #SolarStorms, which could be powerful enough to bring down much of the #infrastructure on which we depend.
“Now researchers warn that danger could be enough to cause malfunctioning #rail signals, which in turn could lead to #TrainAccidents.
“Researchers modelled how geomagnetically induced currents from solar storms could cause danger, by looking at two routes: the Preston to Lancaster section of the #WestCoastMainLine, and the #GlasgowToEdinburghLine. Those are just two lines that rely heavily on that rail signal, and there are more than 50,000 signalling track circuits in the UK, which control the railway signal with an electric circuit.
“In the new study, they found that space weather would be able to change those circuits. Models suggest that could happen every few decades, the researchers found.
“’Crucially, our research suggests that space weather is able to flip a signal in either direction, turning a red signal green or a green signal red. This is obviously very significant from a safety perspective,' said Cameron Patterson from Lancaster University.
“’By building a computer model of the signalling track circuits using realistic specifications for the various components of the system, we found that space weather events capable of triggering faults in these track circuits are expected in the UK every few decades.'
“Patterson had previously worked on research that suggested solar storms could lead to 'right side' failures, where signals turn from green to red. Those are less dangerous, since trains will stay at a stop.
“But the new research suggests that they can also happen for 'wrong side' failures, that change signals to green. What’s more, they actually require less strength to be flipped, suggesting they could happen with less powerful solar storms.
“‘Our research shows that space weather poses a serious, if relatively rare, risk to the rail signalling system, which could cause delays or even have more critical, safety implications,' said Cameron. 'This natural hazard needs to be taken seriously. By their nature, high-impact, low-frequency events are hard to plan for, but ignoring them is rarely the best way forward.'
“In 1859, the world was hit by what is known as the ‘#CarringtonEvent’, which was powerful enough to knock telegraph signals offline as well as other disruptions. If that happened today, it would cause widespread disruption – including causing widespread problems on both train lines that were examined in the study.
“But there have been more recent, if less powerful, examples of space weather that is powerful enough to hit power grids. In 2003, the Swedish city of Malmo suffered problems from space weather, for instance.
“The work is reported in a new study, 'Wrong Side' Failures Caused by Geomagnetically Induced Currents in Electrified Railway Signalling Systems in the UK’, published in the journal Space Weather.” -
The #Spaceweatherwoman Dr. @TamithaSkov is giving #amateruradio #hamradio operators notice that current #spaceweather solar conditions have produced a #xflare which will likely cause daytime #radioblackouts #solarcycle25
https://twitter.com/TamithaSkov/status/1612953568696492032?t=ytoYcl3O8ntRPjcxQAayew&s=09
-
As the U.S. deals with changing winter #terrestrialweather,expect the same with #spaceweather this week as the sun produces #SolarFlares, #radioblackouts but high #SFI levels for #amateurradio #hamradio #hfbands #solarcycle25
https://twitter.com/TamithaSkov/status/1610530078332694529?t=TC76yUXy4BUfzWyxUXflqA&s=09 -
An update from the #spaceweatherwoman Dr. @TamithaSkov about disruptive daytime HF band conditions for #amateurradio #hamradio operators. #solarcycle25 #spaceweather #solarstorm #SolarFlare #SolarFlares #radioblackouts
https://twitter.com/TamithaSkov/status/1603088288264265740?t=W6_WVWAI3FQce8KKbQYZ4Q&s=09