Solar flares on July 31, 2025
The most powerful solar flare in 24 hours
C2.4 (normal) flare - July 31 at 8:39 PM
Solar activity index
Value as of the end of the day on July 31, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 30, 2025 to July 31, 2025
Time zone — UTC-07 (Seattle) — summer time
List of solar flares for July 31, 2025
The total number of solar flares of class C and higher — 13 flares
C class — 13 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.4 | 23:45 | 23:54 | 00:14 | 4157 |
| C1.7 | 21:51 | 22:01 | 22:11 | 4155 |
| C1.5 | 21:32 | 21:47 | 21:51 | — |
| C2.4 | 20:23 | 20:39 | 20:54 | 4149 |
| C1.7 | 19:42 | 19:45 | 19:50 | 4167 |
| C2.0 | 18:52 | 18:54 | 19:02 | 4167 |
| C1.6 | 18:45 | 18:49 | 18:52 | 4167 |
| C1.9 | 14:55 | 14:59 | 15:04 | 4167 |
| C1.3 | 12:47 | 12:51 | 13:00 | — |
| C1.6 | 11:29 | 11:52 | 12:03 | 4153 |
| C1.7 | 08:30 | 08:43 | 08:53 | 4155 |
| C1.5 | 07:34 | 07:53 | 08:11 | 4153 |
| C1.4 | 03:11 | 03:20 | 03:25 | 4153 |