Solar flares on December 10, 2025
The most powerful solar flare in 24 hours
M4.4 (strong) flare - December 10 at 11:08 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+01 (Budapest)
List of solar flares for December 10, 2025
The total number of solar flares of class C and higher — 20 flares
C class — 14 | M class — 6 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M4.4 | 22:58 | 23:08 | 23:14 | 4294 |
| C2.7 | 21:19 | 21:24 | 21:34 | 4294 |
| C2.7 | 20:58 | 21:04 | 21:07 | 4294 |
| C3.7 | 20:18 | 20:28 | 20:36 | 4296 |
| C3.4 | 15:56 | 16:05 | 16:14 | 4305 |
| M1.6 | 14:32 | 14:43 | 14:49 | 4294 |
| C4.1 | 11:22 | 11:29 | 11:43 | 4294 |
| M1.0 | 10:46 | 10:55 | 11:02 | 4294 |
| M1.9 | 08:31 | 08:37 | 08:42 | 4294 |
| C2.5 | 08:23 | 08:29 | 08:31 | 4304 |
| C2.0 | 08:00 | 08:04 | 08:07 | 4294 |
| C3.6 | 07:15 | 07:26 | 07:34 | 4294 |
| C3.1 | 06:33 | 06:38 | 06:43 | 4294 |
| C4.1 | 05:57 | 06:03 | 06:07 | 4296 |
| M1.2 | 05:17 | 05:22 | 05:27 | 4294 |
| C9.5 | 04:17 | 04:24 | 04:30 | 4296 |
| C6.5 | 04:05 | 04:13 | 04:17 | 4304 |
| C8.0 | 03:31 | 03:47 | 03:54 | 4294 |
| C7.8 | 02:20 | 02:25 | 02:30 | 4294 |
| M1.5 | 00:13 | 00:27 | 00:36 | 4296 |