Solar flares on December 8, 2025
The most powerful solar flare in 24 hours
X1.1 (very strong) flare - December 8 at 6:01 AM
Solar activity index
Value as of the end of the day on December 8, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 7, 2025 to December 8, 2025
Time zone — UTC+01 (Brussels)
List of solar flares for December 8, 2025
The total number of solar flares of class C and higher — 19 flares
C class — 12 | M class — 6 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.2 | 23:04 | 23:28 | 23:45 | 4299 |
| M3.1 | 22:13 | 22:17 | 22:25 | 4294 |
| C3.7 | 21:59 | 22:06 | 22:13 | 4294 |
| C2.4 | 18:58 | 19:11 | 19:22 | 4304 |
| C4.7 | 16:47 | 16:54 | 16:57 | 4294 |
| C3.7 | 16:00 | 16:05 | 16:09 | 4294 |
| C4.8 | 14:57 | 15:06 | 15:14 | 4304 |
| M1.0 | 13:42 | 14:05 | 14:21 | 4294 |
| C5.2 | 13:19 | 13:28 | 13:36 | 4294 |
| C8.0 | 09:50 | 09:57 | 10:06 | 4294 |
| M1.8 | 07:40 | 07:54 | 08:04 | 4304 |
| C3.5 | 06:20 | 06:26 | 06:30 | 4304 |
| X1.1 | 05:49 | 06:01 | 06:04 | 4298 |
| C6.2 | 05:17 | 05:27 | 05:32 | 4296 |
| C4.1 | 04:40 | 04:46 | 04:51 | 4294 |
| C3.6 | 03:47 | 03:57 | 04:05 | 4296 |
| C2.7 | 02:40 | 02:44 | 02:48 | 4294 |
| M2.0 | 01:33 | 01:36 | 01:39 | 4294 |
| M2.4 | 00:56 | 01:12 | 01:23 | 4299 |