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Bulletin on solar and geomagnetic activity Solar activity report
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Kp values
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Expanding sunspot region 2242
Solar activity was low today with only a couple of C-class solar flares to report. The strongest of these solar flares was an C7.0 solar flare at 01:40 UTC from sunspot region 2242. Sunspot region 2242 continue to expand today and is now the most threatening sunspot region on the earth-facing solar disk. What can we expect from it in the days ahead?
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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
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/03/30 | M1.0 |
| 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 | 127 -27.6 |
| Last 30 days | 127 -25.7 |