Solar flares on December 5, 2025
The most powerful solar flare in 24 hours
C7.3 (normal) flare - December 5 at 2:09 AM
Solar activity index
Value as of the end of the day on December 5, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 4, 2025 to December 5, 2025
Time zone — UTC+00 (London)
List of solar flares for December 5, 2025
The total number of solar flares of class C and higher — 13 flares
C class — 13 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.2 | 22:36 | 22:48 | 23:06 | 4296 |
| C2.3 | 21:11 | 21:16 | 21:19 | 4296 |
| C2.5 | 20:52 | 21:03 | 21:11 | 4296 |
| C3.8 | 20:01 | 20:11 | 20:17 | 4294 |
| C2.5 | 18:55 | 19:02 | 19:05 | 4294 |
| C2.4 | 18:40 | 18:51 | 18:55 | — |
| C2.4 | 18:27 | 18:33 | 18:35 | 4294 |
| C2.5 | 17:45 | 17:54 | 18:03 | 4294 |
| C4.3 | 16:15 | 16:26 | 16:38 | 4294 |
| C2.6 | 09:36 | 09:44 | 09:49 | 4299 |
| C2.7 | 07:39 | 07:45 | 07:50 | 4298 |
| C7.3 | 01:42 | 02:09 | 07:39 | 4299 |
| C3.9 | 00:02 | 00:11 | 00:26 | 4294 |