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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)
CME impact, X1.5 solar flare
The anticipated M9.3 coronal mass ejection has arrived at our planet. As expected, it looks like a glancing blow with the solar wind speed increasing to a modest 430km/s with the interplanetary magnetic field strength (Bt) increasing to about 15nT. A minor G1 geomagnetic storm watch is in effect for the remainder of today.
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
Incoming & Unnumbered Active Regions 17622025/04/12-13 Filament CMEs 2025/04/16 G3 Watch 539AR4064 16AR4062 45GLE. Ground Level Enhancements 12
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/18 | M4.4 |
| Last geomagnetic storm | 2025/04/16 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 120.5 -13.7 |
| Last 30 days | 116.6 -25.7 |