Solar flares on August 12, 2025
The most powerful solar flare in 24 hours
C8.3 (normal) flare - August 12 at 11:43 AM
Solar activity index
Value as of the end of the day on August 12, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 11, 2025 to August 12, 2025
Time zone — UTC-07 (Seattle) — summer time
List of solar flares for August 12, 2025
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 21:26 | 21:35 | 21:39 | 4178 |
| C2.3 | 20:23 | 20:30 | 20:32 | 4178 |
| C2.9 | 18:29 | 18:42 | 18:44 | 4178 |
| C2.4 | 15:49 | 15:53 | 15:56 | — |
| C2.1 | 14:32 | 14:35 | 14:37 | 4178 |
| C8.3 | 11:09 | 11:43 | 12:09 | 4172 |
| C4.0 | 09:13 | 09:24 | 09:37 | 4172 |
| C5.0 | 05:51 | 05:55 | 05:58 | 4172 |
| C6.1 | 05:03 | 05:18 | 05:39 | — |
| C7.7 | 04:47 | 04:53 | 04:55 | — |