Solar flares on December 9, 2025
The most powerful solar flare in 24 hours
M3.1 (strong) flare - December 9 at 4:17 AM
Solar activity index
Value as of the end of the day on December 9, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 8, 2025 to December 9, 2025
Time zone — UTC+07 (Barnaul)
List of solar flares for December 9, 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 |
|---|---|---|---|---|
| M1.5 | 22:00 | 22:14 | 22:20 | 4294 |
| C5.6 | 20:27 | 20:35 | 20:43 | 4294 |
| C4.8 | 20:15 | 20:25 | 20:27 | 4294 |
| C3.9 | 19:35 | 19:41 | 19:55 | 4294 |
| C6.0 | 18:58 | 19:06 | 19:10 | 4294 |
| C4.0 | 18:48 | 18:55 | 18:58 | 4294 |
| C2.7 | 18:29 | 18:42 | 18:48 | 4294 |
| C4.2 | 16:56 | 17:04 | 17:08 | 4294 |
| M1.6 | 14:41 | 14:47 | 14:51 | 4294 |
| C3.1 | 12:32 | 12:39 | 12:43 | — |
| C2.5 | 09:34 | 09:36 | 09:39 | — |
| C8.0 | 08:47 | 08:52 | 08:55 | 4294 |
| M1.1 | 08:34 | 08:38 | 08:42 | 4294 |
| M2.0 | 07:37 | 07:58 | 08:17 | 4299 |
| C4.6 | 07:19 | 07:30 | 07:37 | 4299 |
| C2.6 | 06:48 | 06:59 | 07:03 | 4298 |
| M1.2 | 05:04 | 05:28 | 05:45 | 4299 |
| M3.1 | 04:13 | 04:17 | 04:25 | 4294 |
| C3.7 | 03:59 | 04:06 | 04:13 | 4294 |
| C2.4 | 00:58 | 01:11 | 01:22 | 4304 |