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