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Bulletin on solar and geomagnetic activity Solar activity report
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A large sunspot region is about to rotate onto the earth-facing disk
Out of nowhere yesterday we were surprised by M-class solar activity. A sunspot region that is hiding behind the north-east limb started flaring and kept the X-ray flux above the M-class threshold for about three and a half hours! Three peaks were officially recorded: M1.2 M1.9 and M2.2. Multiple coronal mass ejections left the Sun following this activity but of course none are directed towards Earth.
Latest news
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/22 | M1.3 |
| Last geomagnetic storm | 2025/04/21 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 122.8 -11.4 |
| Last 30 days | 117.7 -15.6 |