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.
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Fairbanks, AKLatest news
Thursday, 11 September 2025
Coronal hole faces Earth
Sunday, 31 August 2025
M2.7 solar flare with earth-directed CME!
Tuesday, 5 August 2025
M4.4 solar flare from sunspot region 4168
Latest forum messages
Returning Carrington 9Coronal Hole 80 21Sunspot Latitudes at or near Solar Maximum 105Filaments and prominences 333Are these K-H waves? 8
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Space weather facts
| Last X-flare | 2025/06/19 | X1.9 |
| Last M-flare | 2025/09/19 | M1.5 |
| Last geomagnetic storm | 2025/09/16 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| August 2025 | 133.5 +7.9 |
| September 2025 | 118.2 -15.3 |
| Last 30 days | 134.2 +12.7 |