| Sunspot number | New regions | Background flux | C | M | X |
|---|---|---|---|---|---|
| 100 | 0 | C1.6 | 12 | 6 | 2 |
| Region | Start | Maximum | End | |
|---|---|---|---|---|
| 0720 | X1.2 | 00:22 | 00:43 | 01:02 |
| 0720 | C2.9 | 02:34 | 02:39 | 02:44 |
| 0720 | C4.2 | 03:16 | 03:40 | 03:57 |
| 0720 | M1.3 | 04:09 | 04:16 | 04:22 |
| 0720 | M8.4 | 04:26 | 04:31 | 04:36 |
| 0720 | M8.6 | 05:54 | 06:38 | 07:17 |
| 0720 | M1.2 | 11:41 | 11:48 | 11:50 |
| 0720 | C7.4 | 12:27 | 12:31 | 12:34 |
| 0720 | C5.5 | 13:52 | 13:57 | 13:59 |
| 0718 | M3.2 | 14:08 | 14:23 | 14:39 |
| 0720 | C8.0 | 16:50 | 16:57 | 17:02 |
| 0720 | C7.2 | 17:03 | 17:07 | 17:09 |
| 0720 | C2.9 | 17:57 | 18:02 | 18:05 |
| - | C4.4 | 18:12 | 18:15 | 18:18 |
| 0720 | C4.2 | 17:49 | 18:16 | 18:24 |
| 0720 | C8.8 | 18:42 | 18:53 | 19:01 |
| 0720 | C3.5 | 19:44 | 19:49 | 19:54 |
| 0720 | C5.4 | 20:08 | 20:22 | 20:27 |
| 0720 | M1.0 | 22:01 | 22:08 | 22:16 |
| 0720 | X2.6 Play | 22:25 | 23:02 | 23:31 |
| Auroral activity | Minor | Severe |
|---|---|---|
| High latitude | 20% | 15% |
| Middle latitude | 1% | 1% |
| Predicted Kp max | 2 |
| Solar activity | |
|---|---|
| M-class solar flare | 1% |
| X-class solar flare | 1% |
| Moon phase |
|---|
| New Moon |
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| Last X-flare: | 2017/09/10 | X8.2 |
| Last M-flare: | 2017/09/09 | M1.1 |
| Last geomagnetic storm: | 2017/09/18 | Kp5 (G1) |
| Number of spotless days in 2017: | 56 | |
| Last spotless day: | 2017/08/01 | |
