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Bulletin on solar and geomagnetic activity Solar activity report
Geophysical report
Sunspot regions
Coronal holes
Kp values
Solar flares
Radiation storms
Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
G3 geomagnetic storm
What a show! The M1.7 coronal mass ejection arrived ahead of schedule yesterday (3 November) around 19:30 UTC. That is faster than pretty much every forecast that was out there! She must have had a clear run trough space as the cloud impacted our planet with an average speed of about 700km/s.
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
Latest forum messages
Unspecified geomagnetic activity 2377AR 14079 68Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 33Short PBS episode on Aurora sounds 5New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 54
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/30 | M2.03 |
| Last geomagnetic storm | 2025/05/01 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 59 -81.6 |
| Last 30 days | 119.8 -10.8 |