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
Wednesday, 29 November 2023
M9.8 solar flare with earth-directed CME
Friday, 10 November 2023
Coronal mass ejection impact expected on 11 November
Monday, 6 November 2023
Strong geomagnetic storm sparks aurora all over Europe
Latest forum messages
D-RAP and Gamma Ray Bursts 8AR 3500 102Brightest Ever Gamma Ray Burst October 2022 13practical details about very strong solar events? 10Regions 3490/3492/3495/3497 Cluster 30
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Space weather facts
| Last X-flare | 2023/08/07 | X1.51 |
| Last M-flare | 2023/11/28 | M9.8 |
| Last geomagnetic storm | 2023/11/25 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2023 | 99.4 -34.2 |