Solar flares on December 4, 2021
The most powerful solar flare in 24 hours
C7.1 (normal) flare - December 4 at 6:59 PM
Solar activity index
Value as of the end of the day on December 4, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 3, 2021 to December 4, 2021
Time zone — UTC-05 (Indianapolis)
List of solar flares for December 4, 2021
The total number of solar flares of class C and higher — 14 flares
C class — 14 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.9 | 22:13 | 22:23 | 22:35 | 2898 |
| C3.9 | 20:04 | 20:09 | 20:14 | 2898 |
| C1.1 | 19:54 | 19:57 | 20:02 | 2898 |
| C7.1 | 18:21 | 18:59 | 19:14 | 2898 |
| C1.6 | 17:07 | 17:15 | 17:25 | 2898 |
| C1.3 | 14:30 | 14:41 | 14:51 | 2898 |
| C1.8 | 10:48 | 10:59 | 11:12 | 2898 |
| C1.8 | 10:04 | 10:34 | 10:48 | 2898 |
| C1.0 | 05:05 | 05:09 | 05:15 | 2898 |
| C1.2 | 03:19 | 03:26 | 03:34 | 2898 |
| C2.3 | 02:34 | 02:54 | 03:00 | 2898 |
| C1.4 | 02:14 | 02:24 | 02:31 | 2898 |
| C2.5 | 01:44 | 01:52 | 01:56 | 2898 |
| C4.2 | 23:43 | 00:15 | 00:34 | 2898 |