Sunspot region AR13999
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/02/16 | 5 | 20 | CRO | N05E53 | |
| 2025/02/17 | 7 | 30 | CRO | N05E38 | |
| 2025/02/18 | 9 | 30 | CRO | N06E23 | |
| 2025/02/19 | 3 | 20 | CRO | N06E08 | |
| 2025/02/20 | 3 | 20 | CRO | N06W05 | |
| 2025/02/21 | 3 | 20 | CRO | N06W20 | |
| 2025/02/22 | 3 | 10 | BXO | N06W35 | |
| 2025/02/23 | 3 | 10 | BXO | N04W48 | |
| 2025/02/24 | 2 | 20 | CRO | N11W61 | |
| 2025/02/25 | 2 | 10 | BXO | N11W75 | |
| 2025/02/26 | 2 | 10 | BXO | N11W89 |
2025/02/16
2025/02/17
2025/02/18
2025/02/19
2025/02/20
2025/02/21
2025/02/22
2025/02/23
2025/02/24
2025/02/25
2025/02/26
|
2025/02/16
2025/02/17
2025/02/18
2025/02/19
2025/02/20
2025/02/21
2025/02/22
2025/02/23
2025/02/24
2025/02/25
2025/02/26
|
Latest news
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Latest forum messages
AR4405 18AR4401 65Incoming & Unnumbered Active Regions 256Photographing auroras 234SDO Imagery is not updated? 6
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/26 | M4.0 |
| Last geomagnetic storm | 2026/03/25 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 81.4 +3.2 |
| Last 30 days | 81.4 +3.6 |