Sunspot region AR13921
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2024/12/09 | 1 | 20 | HRX | S07E12 | |
| 2024/12/10 | 1 | 10 | HRX | S07W01 | |
| 2024/12/11 | 1 | 10 | AXX | S05W11 | |
| 2024/12/12 | 1 | 10 | AXX | S06W28 |
2024/12/09
2024/12/10
2024/12/11
2024/12/12
|
2024/12/09
2024/12/10
2024/12/11
2024/12/12
|
| C |
|---|
| 1 |
The top 1 solar flares from sunspot region 13921
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.2 | 2024/12/15 | 04:55 | 05:07 | 05:13 |
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
X1.9 CME 1350AR4366 570New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 68Anomalous sunspots on the sun ? 5JHelioviewer Tips and Settings 39
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Space weather facts
| Last X-flare | 2026/02/02 | X1.6 |
| Last M-flare | 2026/02/02 | M2.4 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 97 -27 |
| Last 30 days | 118.3 +3.5 |