On this page you will find an overview of the strongest solar radiation storms from Solar Cycle 24 together with links to more information in our archive.
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Active geomagnetic conditions (Kp4) Threshold Reached: 05:32 UTC
Begin Time: 07/10/2025 20:07 UTC Estimated Velocity: 755km/sec.
Active geomagnetic conditions (Kp4) Threshold Reached: 13:43 UTC
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 08:46 UTC
Last X-flare | 2025/06/19 | X1.9 |
Last M-flare | 2025/10/03 | M1.2 |
Last geomagnetic storm | 2025/10/03 | Kp5 (G1) |
Spotless days | |
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Last spotless day | 2022/06/08 |
Monthly mean Sunspot Number | |
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September 2025 | 129.8 -3.7 |
October 2025 | 140.1 +10.3 |
Last 30 days | 132.5 +1.1 |