Solar flares on August 25, 2025
The most powerful solar flare in 24 hours
M4.5 (strong) flare - August 25 at 5:24 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+00 (Reykjavik)
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 |
|---|---|---|---|---|
| C3.1 | 23:08 | 23:15 | 23:20 | 4197 |
| C3.2 | 21:17 | 21:24 | 21:27 | 4199 |
| C4.6 | 16:50 | 16:55 | 17:01 | 4199 |
| C4.8 | 16:11 | 16:16 | 16:22 | 4199 |
| M1.1 | 15:30 | 15:38 | 15:41 | 4199 |
| M1.2 | 15:06 | 15:18 | 15:28 | 4199 |
| C4.5 | 14:52 | 14:59 | 15:05 | 4199 |
| C3.8 | 12:34 | 12:42 | 12:45 | 4199 |
| C5.5 | 10:30 | 10:42 | 10:51 | 4197 |
| M1.0 | 09:04 | 09:07 | 09:09 | 4197 |
| C9.9 | 08:45 | 08:55 | 09:04 | 4199 |
| M4.5 | 05:01 | 05:24 | 05:40 | 4199 |
| C4.3 | 02:29 | 02:35 | 02:40 | 4199 |
| C4.8 | 01:56 | 02:00 | 02:06 | 4199 |