Viewing archive of Monday, 15 December 2014
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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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Thursday, 16 January 2025
Coronal hole faces Earth
Saturday, 4 January 2025
Sunspot region 3947, X-class solar flares
Monday, 30 December 2024
Two earth-directed coronal mass ejections
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Space weather facts
| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/01/21 | M3.3 |
| Last geomagnetic storm | 2025/01/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2024 | 154.5 +2 |
| January 2025 | 145.2 -9.3 |
| Last 30 days | 163.2 +45.8 |