Sunspot region AR13866
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2024/10/21 | 6 | 30 | CAI | S08E58 | |
| 2024/10/22 | 11 | 40 | CAO | S03E45 | |
| 2024/10/23 | 11 | 20 | BXI | S12E31 | |
| 2024/10/24 | 7 | 10 | BXO | S06E21 | |
| 2024/10/25 | 3 | 10 | BXO | S11E06 | |
| 2024/10/26 | 2 | 10 | BXO | S12W08 | |
| 2024/10/27 | 2 | 10 | BXO | S12W22 | |
| 2024/10/28 | 4 | 10 | BXO | S12W36 | |
| 2024/10/29 | 4 | 10 | BXO | S12W50 |
2024/10/21
2024/10/22
2024/10/23
2024/10/24
2024/10/25
2024/10/26
2024/10/27
2024/10/28
2024/10/29
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2024/10/21
2024/10/22
2024/10/23
2024/10/24
2024/10/25
2024/10/26
2024/10/27
2024/10/28
2024/10/29
|
| C |
|---|
| 3 |
The top 3 solar flares from sunspot region 13866
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.5 | 2024/10/23 | 11:11 | 11:20 | 11:26 | |
| 2 | C3.5 | 2024/10/23 | 10:19 | 10:22 | 10:28 | |
| 3 | C2.8 | 2024/10/25 | 06:52 | 06:59 | 07:05 |
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
What, no CH/HSS thread? 28Filaments and prominences 488Current Farside Activity 376AR4377 5AR4374 16
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/13 | M1.0 |
| Last geomagnetic storm | 2026/02/15 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 112.1 -0.5 |
| Last 30 days | 128.2 +28 |