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Solar activity report
Geophysical report
Sunspot regions
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Kp values
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Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
X4.5 solar flare with a fast coronal mass ejection
Sunspot region 3825 which is close to the east limb and slowly rotating into an earth-facing position has produced a long-duration X4.5 class solar flare (R3-strong) today that peaked at 15:29 UTC. This is the fifth largest solar flare of the current Solar Cycle.
Latest news
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
AR4043 37AR4046 63The multiple event last week. 3Incoming & Unnumbered Active Regions 1653Filaments and prominences 748
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/03/27 | M2.0 |
| Last geomagnetic storm | 2025/03/27 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 130 -24.6 |
| Last 30 days | 130 -22.2 |