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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)
M2.1 solar flare and a partial halo CME
As you might have noticed... there has been a lot of M-class activity the past few days. Unfortunately the M3.9 solar flare that took place yesterday did not produce an earth-directed eruption as the halo outline was determined to come from another far side eruption. So we are going to ignore all of these solar flares except for one: the M2.1 flare that peaked at 08:01 UTC 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
AR4064 182025/04/12-13 Filament CMEs 2025/04/16 G3 Watch 545Incoming & Unnumbered Active Regions 1765Line chart of indicators on the auror video, animated graph trace 23Coronal holes 71
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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 | 120.1 -14.1 |
| Last 30 days | 116.4 -25.9 |