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
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Latest forum messages
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Space weather facts
| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/04/27 | M1.0 |
| Last geomagnetic storm | 2026/04/20 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 85 -0.9 |
| Last 30 days | 90.9 +8.3 |
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