Sunspot region AR12657
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2017/05/17 | 2 | 10 | AXX | N07E21 |
2017/05/17
|
2017/05/17
|
| B | C |
|---|---|
| 1 | 1 |
The top 2 solar flares from sunspot region 12657
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.17 | 2016/07/17 | 18:59 | 19:15 | 19:26 | |
| 2 | B1.34 | 2017/05/16 | 18:06 | 18:09 | 18:13 |
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
New video about STEVE 1AR4366 1033What, no CH/HSS thread? 55Unspecified geomagnetic activity 74AR4374 23
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Space weather facts
| 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 | 100.6 -12 |
| Last 30 days | 115.9 +4.8 |