Solar flares on December 9, 2025
The most powerful solar flare in 24 hours
M1.9 (strong) flare - December 9 at 10:37 PM
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-09 (Anchorage)
List of solar flares for December 9, 2025
The total number of solar flares of class C and higher — 27 flares
C class — 23 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.9 | 22:31 | 22:37 | 22:42 | 4294 |
| C2.5 | 22:23 | 22:29 | 22:31 | 4304 |
| C2.0 | 22:00 | 22:04 | 22:07 | 4294 |
| C3.6 | 21:15 | 21:26 | 21:34 | 4294 |
| C3.1 | 20:33 | 20:38 | 20:43 | 4294 |
| C4.1 | 19:57 | 20:03 | 20:07 | 4296 |
| M1.2 | 19:17 | 19:22 | 19:27 | 4294 |
| C9.5 | 18:17 | 18:24 | 18:30 | 4296 |
| C6.5 | 18:05 | 18:13 | 18:17 | 4304 |
| C8.0 | 17:31 | 17:47 | 17:54 | 4294 |
| C7.8 | 16:20 | 16:25 | 16:30 | 4294 |
| M1.5 | 14:13 | 14:27 | 14:36 | 4296 |
| C3.7 | 13:32 | 13:38 | 13:43 | 4305 |
| C5.0 | 12:30 | 12:42 | 13:03 | 4294 |
| C3.4 | 11:53 | 12:09 | 12:21 | 4294 |
| C3.9 | 09:51 | 10:12 | 10:31 | 4294 |
| C3.8 | 08:18 | 08:24 | 08:27 | 4294 |
| C3.8 | 08:10 | 08:15 | 08:18 | 4294 |
| C3.7 | 07:52 | 08:02 | 08:10 | 4294 |
| M1.5 | 06:00 | 06:14 | 06:20 | 4294 |
| C5.6 | 04:27 | 04:35 | 04:43 | 4294 |
| C4.8 | 04:15 | 04:25 | 04:27 | 4294 |
| C3.9 | 03:35 | 03:41 | 03:55 | 4294 |
| C6.0 | 02:58 | 03:06 | 03:10 | 4294 |
| C4.0 | 02:48 | 02:55 | 02:58 | 4294 |
| C2.7 | 02:29 | 02:42 | 02:48 | 4294 |
| C4.2 | 00:56 | 01:04 | 01:08 | 4294 |