Solar flares on December 3, 2025
The most powerful solar flare in 24 hours
C5.4 (normal) flare - December 3 at 12:52 PM
Solar activity index
Value as of the end of the day on December 3, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 2, 2025 to December 3, 2025
Time zone — UTC+00 (Reykjavik)
List of solar flares for December 3, 2025
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.0 | 22:40 | 22:48 | 22:52 | 4298 |
| C3.6 | 22:16 | 22:22 | 22:29 | — |
| C3.9 | 21:23 | 21:31 | 21:34 | — |
| C3.0 | 19:57 | 20:03 | 20:07 | 4294 |
| C3.0 | 16:23 | 16:30 | 16:33 | 4294 |
| C3.3 | 15:52 | 16:02 | 16:23 | 4294 |
| C3.8 | 14:04 | 14:09 | 14:11 | — |
| C5.4 | 12:29 | 12:52 | 13:37 | — |
| C2.8 | 03:47 | 03:55 | 04:00 | 4299 |
| C2.7 | 02:16 | 02:23 | 02:26 | 4297 |