Solar flares on July 31, 2025
The most powerful solar flare in 24 hours
C1.9 (normal) flare - July 31 at 11:59 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+02 (Prague) — summer time
List of solar flares for July 31, 2025
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.9 | 23:55 | 23:59 | 00:04 | 4167 |
| C1.3 | 21:47 | 21:51 | 22:00 | — |
| C1.6 | 20:29 | 20:52 | 21:03 | 4153 |
| C1.7 | 17:30 | 17:43 | 17:53 | 4155 |
| C1.5 | 16:34 | 16:53 | 17:11 | 4153 |
| C1.4 | 12:11 | 12:20 | 12:25 | 4153 |
| C1.4 | 04:36 | 04:42 | 04:46 | 4154 |