Solar flares on December 10, 2025
The most powerful solar flare in 24 hours
M4.4 (strong) flare - December 10 at 5:08 PM
Solar activity index
Value as of the end of the day on December 10, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 9, 2025 to December 10, 2025
Time zone — UTC-05 (Quebec)
List of solar flares for December 10, 2025
The total number of solar flares of class C and higher — 16 flares
C class — 12 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.0 | 21:48 | 21:51 | 21:55 | 4294 |
| C4.8 | 17:58 | 18:05 | 18:07 | 4294 |
| M4.4 | 16:58 | 17:08 | 17:14 | 4294 |
| C2.7 | 15:19 | 15:24 | 15:34 | 4294 |
| C2.7 | 14:58 | 15:04 | 15:07 | 4294 |
| C3.7 | 14:18 | 14:28 | 14:36 | 4296 |
| C3.4 | 09:56 | 10:05 | 10:14 | 4305 |
| M1.6 | 08:32 | 08:43 | 08:49 | 4294 |
| C4.1 | 05:22 | 05:29 | 05:43 | 4294 |
| M1.0 | 04:46 | 04:55 | 05:02 | 4294 |
| M1.9 | 02:31 | 02:37 | 02:42 | 4294 |
| C2.5 | 02:23 | 02:29 | 02:31 | 4304 |
| C2.0 | 02:00 | 02:04 | 02:07 | 4294 |
| C3.6 | 01:15 | 01:26 | 01:34 | 4294 |
| C3.1 | 00:33 | 00:38 | 00:43 | 4294 |
| C4.1 | 23:57 | 00:03 | 00:07 | 4296 |