| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/10/18 | 2 | 90 | HAX | N11E80 | |
| 2011/10/19 | 12 | 110 | EAI | N10E63 | |
| 2011/10/20 | 26 | 340 | FKC | N12E55 | |
| 2011/10/21 | 27 | 360 | EKC | N11E40 | |
| 2011/10/22 | 34 | 290 | EAC | N10E27 | |
| 2011/10/23 | 28 | 280 | EAC | N10E14 | |
| 2011/10/24 | 26 | 150 | EAI | N12W00 | |
| 2011/10/25 | 31 | 140 | EAI | N12W13 | |
| 2011/10/26 | 30 | 140 | EAI | N12W26 | |
| 2011/10/27 | 16 | 30 | DSO | N12W38 | |
| 2011/10/28 | 3 | 50 | CSO | N12W52 | |
| 2011/10/29 | 7 | 70 | DSO | N12W62 | |
| 2011/10/30 | 1 | 70 | HSX | N12W72 | |
| 2011/10/31 | 2 | 20 | CSO | N13W83 |
| C |
|---|
| 17 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C7.88 | 2011/10/19 | 04:49 | 04:55 | 05:00 | |
| 2 | C7.79 | 2011/10/20 | 15:33 | 15:39 | 15:45 | |
| 3 | C5.89 | 2011/10/22 | 15:14 | 15:20 | 15:29 | |
| 4 | C4.91 | 2011/10/19 | 18:45 | 18:49 | 18:51 | |
| 5 | C4.36 | 2011/10/29 | 14:44 | 14:52 | 15:01 | |
| 6 | C3.62 | 2011/10/23 | 11:42 | 11:47 | 11:53 | |
| 7 | C3.55 | 2011/10/21 | 08:53 | 08:57 | 09:02 | |
| 8 | C3.49 | 2011/10/19 | 16:31 | 16:34 | 16:37 | |
| 9 | C2.73 | 2011/10/17 | 18:05 | 18:09 | 18:13 | |
| 10 | C2.45 | 2011/10/28 | 11:48 | 12:17 | 12:42 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/16 | M2.4 |
| Last geomagnetic storm | 2026/02/16 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 94.2 -18.4 |
| Last 30 days | 108.9 -4.7 |