MOSCOW, May 11. The second strongest flare over the past seven years was registered on the Sun on the night of May 11, said Sergei Bogachev, head of the solar astronomy laboratory at the Institute of Space Research of the Russian Academy of Sciences.
“A new extremely strong flare was registered on the Sun at night. According to received data, this is the second most powerful solar explosion since 2017, that is, in seven years. At the peak of radiation, the flare is classified as an X5.8 level event,” Bogachev said . 
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He added that the outbreak began at 4:10 Moscow time, its maximum was recorded at 4:23 Moscow time, and now the radiation has returned to normal.
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“It is extremely difficult to identify local geomagnetic consequences of the event. The activity of the Sun is at such a level that, in fact, it merges into one continuous background. The flare activity index in the morning reached a value of 10.0 on a ten-point scale, that is, it is at the maximum possible level,” the scientist noted.
Speaking about the magnetic storm currently occurring on Earth, he noted that, According to currently available data, there were three solar mass impacts. The first strike occurred around 20:00 Moscow time on May 10 and coincided with the beginning of a G4 storm. At night, more powerful impacts occurred around 1:00 Moscow time and at 4:30 Moscow time. Everyone's strength was equivalent to G5 level.
In the middle of the day, sharp fluctuations in geomagnetic intensity may occur due to the passage of dense solar masses past the Earth, Bogachev warned. New plasma clouds are possible during the day, he added.
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