Solar flares on December 4, 2025
The most powerful solar flare in 24 hours
C7.3 (normal) flare - December 4 at 8:09 PM
Solar activity index
Value as of the end of the day on December 4, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 3, 2025 to December 4, 2025
Time zone — UTC-06 (Saint Paul)
List of solar flares for December 4, 2025
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.3 | 19:42 | 20:09 | 01:39 | 4299 |
| C3.9 | 18:02 | 18:11 | 18:26 | 4294 |
| C6.8 | 17:18 | 17:24 | 17:31 | 4296 |
| C3.7 | 17:13 | 17:16 | 17:18 | 4296 |
| C3.6 | 13:15 | 13:20 | 13:23 | 4298 |
| C3.3 | 13:00 | 13:09 | 13:15 | 4298 |
| C3.4 | 12:12 | 12:19 | 12:27 | 4296 |
| C3.8 | 12:00 | 12:05 | 12:08 | 4294 |