Solar flares on December 11, 2025
The most powerful solar flare in 24 hours
M4.4 (strong) flare - December 11 at 1:08 AM
Solar activity index
Value as of the end of the day on December 11, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 10, 2025 to December 11, 2025
Time zone — UTC+03 (Cheboksary)
List of solar flares for December 11, 2025
The total number of solar flares of class C and higher — 11 flares
C class — 10 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.4 | 20:08 | 20:11 | 20:14 | 4294 |
| C9.7 | 18:39 | 18:46 | 18:51 | 4294 |
| C4.5 | 18:16 | 18:21 | 18:25 | 4294 |
| C2.3 | 15:06 | 15:12 | 15:14 | 4299 |
| C2.4 | 13:16 | 13:22 | 13:38 | 4294 |
| C5.0 | 12:34 | 12:38 | 12:40 | 4299 |
| C2.4 | 12:19 | 12:29 | 12:32 | 4294 |
| C1.7 | 09:09 | 09:15 | 09:18 | — |
| C2.0 | 05:48 | 05:51 | 05:55 | 4294 |
| C4.8 | 01:58 | 02:05 | 02:07 | 4294 |
| M4.4 | 00:58 | 01:08 | 01:14 | 4294 |