What an exciting two days we are having, sunspot regions 2978 and especially 2975 are really delivering with the latter group producing countless of C-class solar flares and even a couple of M-class solar flares. Yesterday's M4.0 solar flare of course being the strongest thus far. This M4.0 solar flare and a smaller M1 solar flare launched two coronal mass ejections into space, both of which have an earth-directed component. Sunspot region 2975 remains a very complex Beta-Gamma-Delta sunspot region which is capable of more M-class activity, and perhaps even a low X-class flare.
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| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.4 +13.7 |