Viewing archive of Tuesday, 16 November 1999
| Sunspot number | New regions | Background flux | Maximum flux | C | M |
|---|---|---|---|---|---|
| 231 18 | 1 | C1.9 | M3.85 | 5 | 7 |
Solar flares
| Region | Start | Maximum | End | |
|---|---|---|---|---|
| - | C2.8 | 02:00 | 02:03 | 02:10 |
| 8766 | M3.8 | 02:36 | 02:46 | 02:54 |
| 8760 | M3.0 | 04:05 | 04:10 | 04:13 |
| 8766 | M1.8 | 04:47 | 05:12 | 05:45 |
| 8765 | M2.3 | 06:06 | 07:10 | 07:39 |
| 8768 | M1 | 09:15 | 09:23 | 09:28 |
| - | C9.4 | 10:03 | 10:35 | 10:50 |
| 8765 | M1.4 | 13:47 | 14:11 | 14:36 |
| 8765 | C5.3 | 15:41 | 16:03 | 16:13 |
| 8765 | C6.8 | 16:27 | 16:51 | 17:02 |
| 8765 | M2.0 | 21:18 | 21:24 | 21:43 |
| 8765 | C3.8 | 23:31 | 23:35 | 23:38 |
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Space weather facts
| Last X-flare: | 2017/09/10 | X8.2 |
| Last M-flare: | 2017/10/20 | M1.0 |
| Last geomagnetic storm: | 2019/09/28 | Kp5 (G1) |
| Number of spotless days in 2019: | 215 | |
| Current stretch spotless days: | 17 | |