Sunspot region AR12820
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/04/24 | 11 | 70 | DAI | S21E05 | |
| 2021/04/25 | 12 | 80 | DSO | S22W05 | |
| 2021/04/26 | 15 | 110 | DSI | S21W18 | |
| 2021/04/27 | 11 | 70 | ESI | S21W32 | |
| 2021/04/28 | 6 | 30 | DAO | S21W46 | |
| 2021/04/29 | 5 | 30 | CRO | S23W57 | |
| 2021/04/30 | 3 | 20 | BXO | S22W71 | |
| 2021/05/01 | 1 | 10 | AXX | S20W82 |
2021/04/24
2021/04/25
2021/04/26
2021/04/27
2021/04/28
2021/04/29
2021/04/30
2021/05/01
|
2021/04/24
2021/04/25
2021/04/26
2021/04/27
2021/04/28
2021/04/29
2021/04/30
2021/05/01
|
| B |
|---|
| 42 |
The top 10 solar flares from sunspot region 12820
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | B7.3 | 2021/04/26 | 01:53 | 02:11 | 02:17 | |
| 2 | B6.6 | 2021/04/24 | 16:44 | 16:53 | 16:58 | |
| 3 | B4.8 | 2021/04/25 | 16:43 | 16:55 | 17:04 | |
| 4 | B4.5 | 2021/04/24 | 14:49 | 14:55 | 14:59 | |
| 5 | B4.4 | 2021/04/24 | 04:42 | 05:07 | 05:17 | |
| 6 | B4.3 | 2021/04/24 | 04:44 | 05:02 | 05:16 | |
| 7 | B3.8 | 2021/04/24 | 18:42 | 18:49 | 18:55 | |
| 8 | B3.5 | 2021/04/26 | 02:51 | 02:56 | 03:00 | |
| 9 | B3.4 | 2021/04/28 | 07:39 | 07:45 | 07:49 | |
| 10 | B3.3 | 2021/04/25 | 00:00 | 00:05 | 00:11 |
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/08 | M2.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 162.7 +70.9 |
| Last 30 days | 108 +13.3 |