Solar flares on August 11, 2025
The most powerful solar flare in 24 hours
M2.2 (strong) flare - August 11 at 1:07 AM
Solar activity index
Value as of the end of the day on August 11, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 10, 2025 to August 11, 2025
Time zone — UTC+10 (Komsomolsk-on-Amur)
List of solar flares for August 11, 2025
The total number of solar flares of class C and higher — 14 flares
C class — 11 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.9 | 23:49 | 23:56 | 00:00 | 4168 |
| C3.2 | 23:40 | 23:46 | 23:49 | 4168 |
| C7.2 | 22:24 | 22:39 | 22:57 | 4168 |
| C7.9 | 21:38 | 21:45 | 21:47 | 4174 |
| C7.6 | 20:51 | 20:54 | 20:56 | 4168 |
| C6.1 | 20:25 | 20:37 | 20:51 | 4168 |
| C6.1 | 19:02 | 19:11 | 19:14 | 4173 |
| C8.9 | 18:34 | 18:43 | 19:02 | 4168 |
| C7.5 | 16:01 | 16:10 | 16:15 | 4173 |
| C7.3 | 15:26 | 15:35 | 15:45 | 4168 |
| M1.3 | 13:42 | 13:52 | 13:59 | 4173 |
| C9.9 | 13:01 | 13:05 | 13:08 | 4168 |
| M1.7 | 08:51 | 09:04 | 09:15 | 4168 |
| M2.2 | 00:57 | 01:07 | 01:10 | 4168 |
Diary
- 18.08.2026 A magnetic storm has begun on Earth quite unexpectedly
- 17.08.2026 Space weather on August 17, 2026
- 12.08.2026 VIDEO: Solar eclipse of August 12, 2026, in real time