Sunspot region AR13309
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2023/05/17 | 4 | 20 | CRO | S20W53 | |
| 2023/05/18 | 1 | 10 | AXX | S19W64 | |
| 2023/05/19 | 3 | 10 | BXO | S17W73 | |
| 2023/05/20 | 3 | 10 | BXO | S18W91 |
2023/05/17
2023/05/18
2023/05/19
2023/05/20
|
2023/05/17
2023/05/18
2023/05/19
2023/05/20
|
| C |
|---|
| 1 |
The top 1 solar flares from sunspot region 13309
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.3 | 2023/05/17 | 15:19 | 15:30 | 15:53 |
Latest news
Sunday, 7 December 2025
M8.1 solar flare with earth-directed CME
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Latest forum messages
AR4299 M8.1 CME 2025/12/06 466Photographing auroras 213AR4294 / 4296 / 4298 451Sporadic E and Flare activity 37Notification bug 1
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/10 | M4.4 |
| Last geomagnetic storm | 2025/12/10 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 155.3 +63.5 |
| Last 30 days | 109 +10.8 |