Sunspot region AR13420
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2023/09/03 | 4 | 30 | CSO | S20E16 | |
| 2023/09/04 | 1 | 20 | CRO | S20E02 | |
| 2023/09/05 | 3 | 10 | AXX | S19W11 | |
| 2023/09/06 | 3 | 10 | AXX | S21W25 |
2023/09/03
2023/09/04
2023/09/05
2023/09/06
|
2023/09/03
2023/09/04
2023/09/05
2023/09/06
|
| C |
|---|
| 1 |
The top 1 solar flares from sunspot region 13420
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.9 | 2023/09/05 | 22:13 | 22:22 | 22:46 |
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
X1.5 CME (2026-03-30) 150AR4405 87Space Weather Watch App 6Comet C/2026 A1 (MAPS) for the southern hemisphere 26Photographing auroras 239
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Space weather facts
| Last X-flare | 2026/03/30 | X1.4 |
| Last M-flare | 2026/03/28 | M1.3 |
| 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 | 88.4 +10.2 |
| Last 30 days | 88.4 +14.9 |
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