Solar flares on December 12, 2025
The most powerful solar flare in 24 hours
M2.0 (strong) flare - December 12 at 8:05 AM
Solar activity index
Value as of the end of the day on December 12, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 11, 2025 to December 12, 2025
Time zone — UTC+03 (Cheboksary)
List of solar flares for December 12, 2025
The total number of solar flares of class C and higher — 10 flares
C class — 8 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.2 | 20:22 | 20:57 | 21:29 | 4294 |
| C3.5 | 18:43 | 18:58 | 19:12 | 4294 |
| C2.8 | 17:37 | 17:47 | 17:51 | 4296 |
| C2.2 | 16:43 | 16:48 | 16:52 | 4294 |
| C2.6 | 12:10 | 12:19 | 12:29 | 4294 |
| M1.1 | 08:27 | 08:44 | 08:53 | 4294 |
| M2.0 | 07:50 | 08:05 | 08:14 | 4296 |
| C2.4 | 02:35 | 02:45 | 02:53 | 4305 |
| C2.3 | 01:26 | 01:32 | 01:35 | 4294 |
| C1.8 | 00:35 | 00:46 | 00:53 | 4296 |