Solar flares on December 15, 2025
The most powerful solar flare in 24 hours
C3.9 (normal) flare - December 15 at 7:28 PM
Solar activity index
Value as of the end of the day on December 15, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 14, 2025 to December 15, 2025
Time zone — UTC+02 (Riga)
List of solar flares for December 15, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.9 | 19:20 | 19:28 | 19:49 | 4304 |
| C2.0 | 14:21 | 14:25 | 14:34 | 4304 |
| C1.3 | 13:52 | 14:05 | 14:15 | 4308 |
| C1.4 | 05:02 | 05:16 | 05:24 | 4307 |
| C1.8 | 03:40 | 03:48 | 03:56 | 4304 |
| C1.9 | 03:20 | 03:29 | 03:34 | 4307 |