Overview
- Laboratories at IKI RAN and ISZF SO RAN report 69 days with magnetic storms in 2025, up from 44 in 2024.
- The number of geomagnetically disturbed days with Kp index at 4 or higher rose to 164 from 94, an increase of about 75%.
- Comparable storm-day counts were last seen in 2015 (79) and 2016 (69), and the last time total disturbed days were higher was 2005 (169).
- Researchers warn a large coronal hole currently influencing Earth could produce another storm within days.
- IKI RAN’s Sergey Bogachev notes X-class solar flares fell threefold and M-class more than twofold in 2025, while coronal holes increasingly drove storms.