Solar flares on December 4, 2025
The most powerful solar flare in 24 hours
C7.3 (normal) flare - December 4 at 9:09 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-05 (Providence)
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 | 20:42 | 21:09 | 02:39 | 4299 |
| C3.9 | 19:02 | 19:11 | 19:26 | 4294 |
| C6.8 | 18:18 | 18:24 | 18:31 | 4296 |
| C3.7 | 18:13 | 18:16 | 18:18 | 4296 |
| C3.6 | 14:15 | 14:20 | 14:23 | 4298 |
| C3.3 | 14:00 | 14:09 | 14:15 | 4298 |
| C3.4 | 13:12 | 13:19 | 13:27 | 4296 |
| C3.8 | 13:00 | 13:05 | 13:08 | 4294 |