Solar flares on August 13, 2025
The most powerful solar flare in 24 hours
C4.1 (normal) flare - August 13 at 11:03 PM
Solar activity index
Value as of the end of the day on August 13, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 12, 2025 to August 13, 2025
Time zone — UTC+03 (Riga)
List of solar flares for August 13, 2025
The total number of solar flares of class C and higher — 14 flares
C class — 14 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.1 | 22:57 | 23:03 | 23:05 | 4172 |
| C3.2 | 21:11 | 21:19 | 21:25 | 4172 |
| C1.8 | 20:55 | 21:01 | 21:04 | 4172 |
| C1.5 | 18:58 | 19:01 | 19:04 | — |
| C1.7 | 18:38 | 18:42 | 18:58 | — |
| C2.6 | 17:46 | 17:56 | 17:59 | 4172 |
| C1.8 | 17:28 | 17:35 | 17:46 | — |
| C1.8 | 13:30 | 13:39 | 13:43 | 4180 |
| C1.7 | 13:17 | 13:21 | 13:30 | 4172 |
| C2.1 | 07:26 | 07:35 | 07:39 | 4178 |
| C2.3 | 06:23 | 06:30 | 06:32 | 4178 |
| C2.9 | 04:29 | 04:42 | 04:44 | 4178 |
| C2.4 | 01:49 | 01:53 | 01:56 | — |
| C2.1 | 00:32 | 00:35 | 00:37 | 4178 |