Solar flares on July 31, 2025
The most powerful solar flare in 24 hours
C2.4 (normal) flare - July 31 at 9:39 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-06 (Cheyenne) — summer time
List of solar flares for July 31, 2025
The total number of solar flares of class C and higher — 12 flares
C class — 12 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 22:51 | 23:01 | 23:11 | 4155 |
| C1.5 | 22:32 | 22:47 | 22:51 | — |
| C2.4 | 21:23 | 21:39 | 21:54 | 4149 |
| C1.7 | 20:42 | 20:45 | 20:50 | 4167 |
| C2.0 | 19:52 | 19:54 | 20:02 | 4167 |
| C1.6 | 19:45 | 19:49 | 19:52 | 4167 |
| C1.9 | 15:55 | 15:59 | 16:04 | 4167 |
| C1.3 | 13:47 | 13:51 | 14:00 | — |
| C1.6 | 12:29 | 12:52 | 13:03 | 4153 |
| C1.7 | 09:30 | 09:43 | 09:53 | 4155 |
| C1.5 | 08:34 | 08:53 | 09:11 | 4153 |
| C1.4 | 04:11 | 04:20 | 04:25 | 4153 |