A significant M8.2-class solar flare erupted from the Sun's active region AR4100 between May 30th and 31st, 2025. According to Sergey Bogachev from the Institute of Space Research of the Russian Academy of Sciences, this eruption launched a coronal mass ejection (CME) directly toward Earth.
The flare, recorded at 00:05 UTC on May 31st, unleashed a fast halo CME traveling at approximately 1900 km/s. Experts predict the CME will reach Earth around June 1st, 2025, potentially causing geomagnetic storms.
While this flare is less powerful than some previous events, it could still trigger G2 to G3-level geomagnetic disturbances. Such storms can disrupt navigation systems, communication networks, and power grids, and may also produce auroras at mid-latitudes.