[Regnum] Scientists from the Solar Astronomy Laboratory of the Space Research Institute of the Russian Academy of Sciences (IKI RAS) reported the onset of a G4.7 magnetic storm on November 12. The institute noted that the storm was triggered by the arrival of the first of three plasma clouds toward Earth.
According to experts, at least three plasma clouds have been identified due to the extreme increase in solar flare activity recorded in recent days.
Scientists clarified that the maximum impact on Earth was expected with the arrival of plasma from the third solar flare, which was expected to peak in the middle of the day. The laboratory explained that the observed phenomenon could be explained by the plasma cloud from yesterday's flare, the most powerful of 2025, moving at record speed and catching up with slower clouds ejected earlier. This resulted in their compression and shock, leading to a sharp increase in temperature, density, and magnetic parameters.
Earlier, on November 12, spacecraft detected the passage of the first solar plasma ejection front at the L1 Lagrange point. Scientists clarified that a cloud of fast protons ejected from the core of the X1.7 flare struck the spacecraft at the Sun-Earth line, 1.5 million km from our planet (the L1 Lagrange point, where the gravitational attraction of two bodies balances each other).
Prior to this, the Solar Astronomy Laboratory of the Space Research Institute of the Russian Academy of Sciences reported the approach of three waves of solar plasma generated by solar flares toward Earth. The first of these was predicted to reach our planet within a few hours after midnight on November 12.
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Spacecraft have recorded the front of the first solar plasma ejection
Spacecraft have recorded the passage of the first solar plasma ejection front at the L1 Lagrange point. This was reported on November 12 by the press service of the Solar Astronomy Laboratory of the Space Research Institute (IKI) of the Russian Academy of Sciences.
It is specified that the spacecraft, located on the Sun-Earth line 1.5 million km from our planet (the L1 Lagrange point, at which the gravitational attraction of two bodies balances each other), were struck by a cloud of fast protons ejected from the core of the X1.7 flare.
The plasma ejection is heading towards Earth and will be the first of three expected within 24 hours.
The laboratory noted that the forecast for the intensity of the impact on Earth over the next 24 hours is uncertain, as it depends on many factors. Astrophysicists are most concerned about the third ejection. Scientists call it the primary ejection, as it is calculated to be the strongest in the current 25th solar cycle and could cause a powerful impact on Earth's magnetosphere.
It was previously reported that three waves of solar plasma generated by solar flares are approaching Earth. The first of the three waves will reach Earth within a few hours after midnight on November 12 and will be the weakest of those expected. Then, within 24 hours, all three will reach our planet.
The third strongest magnetic storm of 2025 began on Earth on the night of November 12. According to scientists' forecasts, solar plasma emissions from the high-level solar flares that occurred on November 9 and 10 were expected that night. The magnetic storms will be more powerful than those on November 7, when plasma clouds only barely touched the Earth.