Solar Cycle 23 - Top Solar Radiation Storms Help
On this page you will find an overview of the strongest solar radiation storms from Solar Cycle 23 together with links to more information in our archive.
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
Unexplained proton activity 4jsoc 61Filaments and prominences 594Changelog/Featurelog 162Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 1
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Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/21 | M1.9 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 100.9 -51.6 |
| Last 30 days | 116.1 -38.9 |