Sunspot region AR11731
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2013/04/25 | 4 | 270 | DKC | N07E61 | |
| 2013/04/26 | 10 | 300 | DKC | N09E51 | |
| 2013/04/27 | 17 | 420 | DKC | N09E37 | |
| 2013/04/28 | 25 | 420 | DKC | N09E25 | |
| 2013/04/29 | 31 | 350 | EKC | N09E11 | |
| 2013/04/30 | 38 | 380 | EKC | N09W03 | |
| 2013/05/01 | 36 | 350 | EKC | N09W17 | |
| 2013/05/02 | 33 | 320 | EKC | N09W31 | |
| 2013/05/03 | 31 | 150 | EAC | N10W43 | |
| 2013/05/04 | 20 | 90 | EAI | N10W56 | |
| 2013/05/05 | 8 | 140 | EAI | N09W71 | |
| 2013/05/06 | 1 | 10 | AXX | N09W85 | |
| 2013/05/07 | 1 | 10 | AXX | N09W99 |
2013/04/26
2013/04/27
2013/04/28
2013/04/29
2013/04/30
2013/05/01
2013/05/02
2013/05/03
2013/05/04
2013/05/05
2013/05/06
2013/05/07
|
2013/04/26
2013/04/27
2013/04/28
2013/04/29
2013/04/30
2013/05/01
2013/05/02
2013/05/03
2013/05/04
2013/05/05
2013/05/06
2013/05/07
|
| C | M |
|---|---|
| 32 | 2 |
The top 10 solar flares from sunspot region 11731
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.93 | 2013/05/03 | 16:39 | 16:55 | 17:22 | |
| 2 | M1.61 | 2013/05/02 | 04:58 | 05:10 | 05:19 | |
| 3 | C9.5 | 2013/05/01 | 14:07 | 14:14 | 14:25 | |
| 4 | C6.5 | 2013/05/01 | 20:29 | 20:32 | 20:38 | |
| 5 | C5.66 | 2013/04/29 | 21:55 | 22:01 | 22:03 | |
| 6 | C5.32 | 2013/04/28 | 15:52 | 15:55 | 15:58 | |
| 7 | C5.1 | 2013/04/28 | 18:00 | 18:04 | 18:06 | |
| 8 | C4.54 | 2013/04/28 | 23:27 | 23:31 | 23:33 | |
| 9 | C4.29 | 2013/04/29 | 03:10 | 03:17 | 03:21 | |
| 10 | C4.29 | 2013/04/29 | 05:51 | 05:55 | 06:00 |
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| 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 | 167.7 +75.9 |
| Last 30 days | 107.1 +13.7 |