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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)
More solar flares from sunspot region 2403
Sunspot region 2403 remains the most complex sunspot region on the earth-facing solar disk and is producing M-class solar flares. It has been the source of two M-class events today: M1.2 and M2.2.
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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Current Farside Activity 8Growth of Cycle 25 866Space Weather Memes 715Incoming & Unnumbered Active Regions 1874Solar filters and telescopes 27
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/05/12 | M1.9 |
| Last geomagnetic storm | 2025/05/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 77.8 -62.8 |
| Last 30 days | 101.4 -34 |