Solar flares on December 16, 2021
The most powerful solar flare in 24 hours
C3.3 (normal) flare - December 16 at 3:27 PM
Solar activity index
Value as of the end of the day on December 16, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 15, 2021 to December 16, 2021
Time zone — UTC+00
List of solar flares for December 16, 2021
The total number of solar flares of class C and higher — 9 flares
C class — 9 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.0 | 23:35 | 23:39 | 23:43 | 2909 |
| C2.9 | 20:29 | 20:44 | 21:06 | 2911 |
| C2.3 | 19:58 | 20:09 | 20:20 | 2911 |
| C3.3 | 15:19 | 15:27 | 15:31 | 2909 |
| C2.0 | 13:34 | 13:41 | 13:45 | 2911 |
| C1.4 | 13:23 | 13:32 | 13:34 | — |
| C1.5 | 05:06 | 05:21 | 05:36 | 2907 |
| C1.3 | 03:44 | 03:54 | 04:04 | 2909 |
| C1.4 | 03:26 | 03:34 | 03:41 | 2909 |