Sunspot region AR11421
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2012/02/19 | 2 | 10 | AXX | N17E59 | |
| 2012/02/20 | 2 | 10 | AXX | N18E46 | |
| 2012/02/21 | 2 | 30 | CRO | N18E32 | |
| 2012/02/22 | 4 | 20 | BXO | N14E19 | |
| 2012/02/24 | 1 | 0 | AXX | N14W06 |
| C |
|---|
| 3 |
The top 3 solar flares from sunspot region 11421
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C5.87 | 2012/02/20 | 04:41 | 05:09 | 05:35 | |
| 2 | C3.3 | 2012/02/26 | 21:35 | 21:41 | 21:49 | |
| 3 | C1.97 | 2012/02/26 | 11:19 | 11:25 | 11:34 |
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
AR4374 21Current Farside Activity 398Incoming & Unnumbered Active Regions 170Solar Transit, Artifacts, or Radiation 85What, no CH/HSS thread? 54
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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 | 103.9 -8.7 |
| Last 30 days | 120.3 +12.4 |