| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2015/09/10 | 1 | 10 | AXX | S10E07 | |
| 2015/09/11 | 1 | 10 | AXX | S10W09 | |
| 2015/09/12 | 10 | 80 | DAI | S10W20 | |
| 2015/09/13 | 12 | 180 | DAI | S11W34 | |
| 2015/09/14 | 12 | 180 | DAI | S11W34 | |
| 2015/09/15 | 5 | 170 | ESO | S10W61 | |
| 2015/09/16 | 4 | 170 | ESO | S10W75 | |
| 2015/09/17 | 1 | 120 | HSX | S12W84 | |
| 2015/09/18 | 1 | 120 | HSX | S12W98 |
| B | C |
|---|---|
| 3 | 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.86 | 2015/09/11 | 21:30 | 21:37 | 21:43 | |
| 2 | C1.83 | 2015/09/16 | 04:20 | 05:44 | 05:58 | |
| 3 | C1.83 | 2015/09/16 | 05:29 | 05:44 | 05:56 | |
| 4 | B8.83 | 2015/09/13 | 04:15 | 04:20 | 04:29 | |
| 5 | B8.47 | 2015/09/13 | 05:20 | 05:24 | 05:33 | |
| 6 | B5.84 | 2015/09/11 | 16:43 | 16:46 | 16:49 |
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/04 | M1.8 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 133 +9 |
| Last 30 days | 120.6 +10.9 |