Solar flares on December 15, 2021
The most powerful solar flare in 24 hours
C8.1 (normal) flare - December 15 at 11:44 AM
Solar activity index
Value as of the end of the day on December 15, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 14, 2021 to December 15, 2021
Time zone — UTC+01 (Rome)
List of solar flares for December 15, 2021
The total number of solar flares of class C and higher — 17 flares
C class — 17 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.4 | 15:27 | 15:34 | 15:38 | 2907 |
| C1.5 | 15:09 | 15:13 | 15:21 | 2907 |
| C2.6 | 13:08 | 13:17 | 13:26 | 2907 |
| C8.1 | 11:31 | 11:44 | 11:48 | 2907 |
| C2.2 | 11:13 | 11:22 | 11:31 | 2907 |
| C1.7 | 11:04 | 11:10 | 11:13 | 2907 |
| C1.5 | 10:05 | 10:22 | 10:34 | 2907 |
| C1.6 | 09:38 | 09:52 | 10:05 | 2907 |
| C1.6 | 07:08 | 07:12 | 07:16 | 2907 |
| C1.7 | 06:48 | 06:58 | 07:08 | 2907 |
| C2.8 | 05:48 | 05:54 | 05:58 | 2907 |
| C4.5 | 05:07 | 05:21 | 05:32 | 2907 |
| C1.9 | 04:38 | 04:46 | 04:51 | 2907 |
| C2.8 | 03:57 | 04:04 | 04:09 | 2907 |
| C2.1 | 02:36 | 02:46 | 02:55 | 2907 |
| C6.0 | 00:44 | 00:49 | 00:56 | 2907 |
| C3.0 | 00:12 | 00:25 | 00:44 | 2907 |