Sunspot region AR12921
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/12/28 | 4 | 110 | DAO | N29W64 | |
| 2021/12/29 | 3 | 180 | DSO | N29W81 | |
| 2021/12/30 | 2 | 300 | DSO | N30W90 | |
| 2021/12/31 | 2 | 300 | DSO | N30W0* |
2021/12/28
2021/12/29
2021/12/30
2021/12/31
|
2021/12/28
2021/12/29
2021/12/30
2021/12/31
|
| B |
|---|
| 2 |
The top 2 solar flares from sunspot region 12921
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B7.8 | 2021/12/30 | 00:15 | 00:24 | 00:31 | |
| 2 | B5.5 | 2021/12/29 | 21:43 | 21:49 | 21:54 |
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Latest alerts
01:45 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:30 UTC
Tuesday, 15 April 2025
22:30 UTC - Geomagnetic activity
Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 22:23 UTC
22:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 22:00 UTC
20:00 UTC - Geomagnetic activity
Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 19:44 UTC
19:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 18:59 UTC
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/15 | M1.2 |
| Last geomagnetic storm | 2025/04/15 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 124.1 -10.1 |
| Last 30 days | 124.7 -16.6 |