Sunspot region AR13931
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2024/12/20 | 3 | 10 | BXO | N23E32 | |
| 2024/12/21 | 3 | 40 | BXO | N26E17 | |
| 2024/12/22 | 1 | 10 | AXX | N25E05 | |
| 2024/12/23 | 1 | 10 | AXX | N25W09 | |
| 2024/12/24 | 2 | 20 | AXX | N18W30 |
2024/12/20
2024/12/21
2024/12/22
2024/12/23
2024/12/24
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2024/12/20
2024/12/21
2024/12/22
2024/12/23
2024/12/24
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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
AR4436 29CMEs From AR4436 1AR 4432 24Upper atmosphere phenomena Red sprites and Blue jets 48Filaments and prominences 552
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Space weather facts
| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/05/07 | M2.6 |
| Last geomagnetic storm | 2026/05/05 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| May 2026 | 112.3 +33 |
| Last 30 days | 92.5 -8.1 |
