Sunspot region AR11640
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2012/12/31 | 2 | 40 | DSO | N28E20 | |
| 2013/01/01 | 11 | 80 | CAO | N28E06 | |
| 2013/01/02 | 23 | 180 | DAI | N28W06 | |
| 2013/01/03 | 18 | 220 | EAI | N28W21 | |
| 2013/01/04 | 28 | 240 | EAI | N28W35 | |
| 2013/01/05 | 24 | 320 | EKI | N28W48 | |
| 2013/01/06 | 11 | 330 | EKI | N28W62 | |
| 2013/01/07 | 4 | 360 | EHO | N28W75 | |
| 2013/01/08 | 5 | 300 | EHO | N28W87 |
| B | C |
|---|---|
| 4 | 10 |
The top 10 solar flares from sunspot region 11640
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C5.78 | 2013/01/08 | 19:04 | 19:12 | 19:19 | |
| 2 | C4.5 | 2013/01/07 | 08:44 | 08:52 | 08:57 | |
| 3 | C3.18 | 2013/01/07 | 23:44 | 23:57 | 00:04 | |
| 4 | C2.43 | 2013/01/03 | 21:27 | 21:38 | 21:45 | |
| 5 | C1.79 | 2013/01/04 | 00:45 | 00:53 | 01:09 | |
| 6 | C1.72 | 2013/01/01 | 08:47 | 09:06 | 09:13 | |
| 7 | C1.53 | 2013/01/07 | 06:35 | 06:39 | 06:46 | |
| 8 | C1.33 | 2013/01/03 | 21:01 | 21:08 | 21:17 | |
| 9 | C1.26 | 2012/12/31 | 22:12 | 22:17 | 22:22 | |
| 10 | C1.16 | 2013/01/04 | 02:06 | 02:12 | 02:17 |
Latest news
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Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| 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 |
| Last 30 days | 90 +16.9 |
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