Solar flares on August 25, 2025
The most powerful solar flare in 24 hours
M4.5 (strong) flare - August 25 at 7:24 AM
Solar activity index
Value as of the end of the day on August 25, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 24, 2025 to August 25, 2025
Time zone — UTC+02 (Brussels) — summer time
List of solar flares for August 25, 2025
The total number of solar flares of class C and higher — 14 flares
C class — 10 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.2 | 23:17 | 23:24 | 23:27 | 4199 |
| C4.6 | 18:50 | 18:55 | 19:01 | 4199 |
| C4.8 | 18:11 | 18:16 | 18:22 | 4199 |
| M1.1 | 17:30 | 17:38 | 17:41 | 4199 |
| M1.2 | 17:06 | 17:18 | 17:28 | 4199 |
| C4.5 | 16:52 | 16:59 | 17:05 | 4199 |
| C3.8 | 14:34 | 14:42 | 14:45 | 4199 |
| C5.5 | 12:30 | 12:42 | 12:51 | 4197 |
| M1.0 | 11:04 | 11:07 | 11:09 | 4197 |
| C9.9 | 10:45 | 10:55 | 11:04 | 4199 |
| M4.5 | 07:01 | 07:24 | 07:40 | 4199 |
| C4.3 | 04:29 | 04:35 | 04:40 | 4199 |
| C4.8 | 03:56 | 04:00 | 04:06 | 4199 |
| C4.0 | 00:25 | 00:34 | 00:42 | 4187 |