Sunspot region AR13398
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2023/08/07 | 4 | 20 | CSO | S20W50 | |
| 2023/08/08 | 4 | 20 | CAO | S20W64 | |
| 2023/08/09 | 2 | 10 | AXX | S21W72 | |
| 2023/08/10 | 2 | 10 | AXX | S21W85 |
2023/08/07
2023/08/08
2023/08/09
2023/08/10
|
2023/08/07
2023/08/08
2023/08/09
2023/08/10
|
| C |
|---|
| 6 |
The top 6 solar flares from sunspot region 13398
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C7.6 | 2023/08/10 | 22:09 | 22:21 | 22:33 | |
| 2 | C5.4 | 2023/08/10 | 02:26 | 02:42 | 02:59 | |
| 3 | C5.0 | 2023/08/11 | 04:43 | 04:55 | 05:12 | |
| 4 | C3.2 | 2023/08/10 | 20:09 | 20:16 | 20:27 | |
| 5 | C2.5 | 2023/08/11 | 04:12 | 04:25 | 04:31 | |
| 6 | C2.3 | 2023/08/11 | 04:31 | 04:38 | 04:42 |
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
Current Farside Activity 389Solar Transit, Artifacts, or Radiation 82What, no CH/HSS thread? 54Changelog/Featurelog 178AR4374 20
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/16 | M2.4 |
| Last geomagnetic storm | 2026/02/16 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 106.5 -6.1 |
| Last 30 days | 123.7 +20 |