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Auroral activity
X1.6 Coronal Mass Ejection impact!
It's here! The Coronal Mass Ejection launched by the X1.6 solar flare that occurred two days has arrived at the ACE satellite. It passed ACE at 15:31 UTC which means the CME arrived right on time! In this article we will keep you up to date on the events as they unfold.
M4.5 Coronal Mass Ejection impact caused a G1 geomagnetic storm
The M4.5 Coronal Mass Ejection has arrived at Earth yesterday around 23:00 UTC which was close to the anticipated impact time. A minor G1 geomagnetic storm developed after the impact. The X1.6 Coronal Mass Ejection has yet to come and could cause a strong G3 geomagnetic storm.
Latest news
X1.9 solar flare, Coronal hole faces Earth
X4.0 solar flare
X5.1 solar flare, G4 geomagnetic storm watch
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |