According to the Solar Astronomy Laboratory's website, a group of coronal holes on the Sun's Earth-facing side is exerting strong pressure. This is characterized by a solar wind with very high velocity and temperature, along with a "noticeably increased magnetic field tension."
Bogachev highlighted that a prolonged magnetic storm had been recorded over the past 24 hours, beginning around 3:00 AM Moscow time (MSK) on May 29.
The storm subsided around 5:00 AM MSK on May 30. However, new geomagnetic field disturbances are possible, the scientist noted, adding that the space environment surrounding Earth is still assessed as tense.
"Recurrent storms are possible within 24 hours, according to the forecast," Bogachev warned.
The Solar Astronomy Laboratory indicates that mathematical models predict new moderate-level (G2) storms for Friday. Their Kp index, a planetary index characterizing global magnetic field disturbance, is expected to be close to six.
The magnetic storm that commenced on the night of May 29, 2025, had not subsided after 17 hours as of Friday morning, according to the Solar Astronomy Laboratory of IKI RAS. Scientists explained that the situation is driven by extremely high solar wind speeds, periodically rising to 800 km/s or more, which is twice their usual values.
