Solar flare activity showed a decrease of 15% in the first four months of 2025 compared to the same period last year. This is evidenced by data from the Laboratory of Solar Astronomy of the IKI and ISZF.
The number of X-class flares decreased from 8 to 5, and M-class flares decreased from 170 to 150. At the same time, the number of C-class flares remained practically at the same level - 921 versus 965.
The most powerful flare of 2025 was X2.0, recorded on February 23. For comparison, in 2024, an X6.3 flare occurred on the same day, which emphasizes the decrease in overall solar activity.
Despite the decrease in the number of flares, the number of magnetic storms in 2025 has increased dramatically. From January to April, there were 21 days with magnetic storms, which is 2.5 times more than in the same period of 2024, when there were only 8 such days. The main reason for this phenomenon was the appearance of large coronal holes on the Sun, which were practically not observed last year.
Among the most significant magnetic storms of 2025, we can highlight the G4.0 level event that occurred on January 1, and the G3.7 recorded on April 16 on a 5-point scale.
Earlierwww1.ru reported that a powerful class M flareoccurred on the Sun.
Read more on the topic:
Russians observed the Northern Lights at night due to a powerful geomagnetic storm
Muscovites will be able to see the Northern Lights on the night of March 24
Cosmonaut Wagner showed footage of the first polar aurora in 2025
