Sunspot region AR11271
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/08/16 | 3 | 120 | DSO | N17E74 | |
| 2011/08/17 | 4 | 240 | DSI | N15E63 | |
| 2011/08/18 | 9 | 240 | ESI | N16E50 | |
| 2011/08/19 | 16 | 290 | EHC | N16E38 | |
| 2011/08/20 | 12 | 240 | ESI | N16E25 | |
| 2011/08/21 | 22 | 260 | DHO | N16E10 | |
| 2011/08/22 | 15 | 240 | EAO | N16W01 | |
| 2011/08/23 | 28 | 280 | EKC | N17W16 | |
| 2011/08/24 | 21 | 270 | EKI | N17W29 | |
| 2011/08/25 | 25 | 180 | ESI | N17W42 | |
| 2011/08/26 | 15 | 140 | ESI | N17W56 | |
| 2011/08/27 | 6 | 80 | DSO | N17W69 | |
| 2011/08/28 | 4 | 60 | CSO | N16W82 |
| B | C |
|---|---|
| 15 | 17 |
The top 10 solar flares from sunspot region 11271
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C4.88 | 2011/08/17 | 10:19 | 10:42 | 11:08 | |
| 2 | C4.26 | 2011/08/20 | 22:54 | 22:58 | 23:00 | |
| 3 | C3.37 | 2011/08/26 | 13:04 | 13:13 | 13:17 | |
| 4 | C2.32 | 2011/08/18 | 00:23 | 00:30 | 00:36 | |
| 5 | C2 | 2011/08/15 | 04:42 | 04:54 | 05:20 | |
| 6 | C1.87 | 2011/08/16 | 23:54 | 00:25 | 00:59 | |
| 7 | C1.61 | 2011/08/22 | 15:15 | 16:04 | 16:38 | |
| 8 | C1.58 | 2011/08/18 | 14:59 | 15:15 | 15:31 | |
| 9 | C1.56 | 2011/08/24 | 16:31 | 16:33 | 16:34 | |
| 10 | C1.53 | 2011/08/26 | 03:29 | 03:34 | 03:36 |
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/25 | M2.4 |
| Last geomagnetic storm | 2026/03/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (5%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| March 2026 | 75 -37.6 |
| Last 30 days | 59.2 -65.5 |