Solar flares on December 10, 2025
The most powerful solar flare in 24 hours
M4.4 (strong) flare - December 10 at 3:08 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-07 (Red deer)
List of solar flares for December 10, 2025
The total number of solar flares of class C and higher — 14 flares
C class — 10 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 23:09 | 23:15 | 23:18 | — |
| C2.0 | 19:48 | 19:51 | 19:55 | 4294 |
| C4.8 | 15:58 | 16:05 | 16:07 | 4294 |
| M4.4 | 14:58 | 15:08 | 15:14 | 4294 |
| C2.7 | 13:19 | 13:24 | 13:34 | 4294 |
| C2.7 | 12:58 | 13:04 | 13:07 | 4294 |
| C3.7 | 12:18 | 12:28 | 12:36 | 4296 |
| C3.4 | 07:56 | 08:05 | 08:14 | 4305 |
| M1.6 | 06:32 | 06:43 | 06:49 | 4294 |
| C4.1 | 03:22 | 03:29 | 03:43 | 4294 |
| M1.0 | 02:46 | 02:55 | 03:02 | 4294 |
| M1.9 | 00:31 | 00:37 | 00:42 | 4294 |
| C2.5 | 00:23 | 00:29 | 00:31 | 4304 |
| C2.0 | 00:00 | 00:04 | 00:07 | 4294 |