Solar flares on July 31, 2025
The most powerful solar flare in 24 hours
C2.4 (normal) flare - July 31 at 10:39 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-05 (Springfield) — summer time
List of solar flares for July 31, 2025
The total number of solar flares of class C and higher — 11 flares
C class — 11 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 23:32 | 23:47 | 23:51 | — |
| C2.4 | 22:23 | 22:39 | 22:54 | 4149 |
| C1.7 | 21:42 | 21:45 | 21:50 | 4167 |
| C2.0 | 20:52 | 20:54 | 21:02 | 4167 |
| C1.6 | 20:45 | 20:49 | 20:52 | 4167 |
| C1.9 | 16:55 | 16:59 | 17:04 | 4167 |
| C1.3 | 14:47 | 14:51 | 15:00 | — |
| C1.6 | 13:29 | 13:52 | 14:03 | 4153 |
| C1.7 | 10:30 | 10:43 | 10:53 | 4155 |
| C1.5 | 09:34 | 09:53 | 10:11 | 4153 |
| C1.4 | 05:11 | 05:20 | 05:25 | 4153 |