Solar flares on October 31, 2025
The most powerful solar flare in 24 hours
C7.1 (normal) flare - October 31 at 9:43 PM
Solar activity index
Value as of the end of the day on October 31, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 30, 2025 to October 31, 2025
Time zone — UTC+01 (Valletta)
List of solar flares for October 31, 2025
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.1 | 20:37 | 21:43 | 22:40 | — |
| C3.7 | 17:39 | 17:53 | 18:23 | — |
| C1.1 | 09:25 | 09:38 | 09:56 | — |
| C1.8 | 02:44 | 03:01 | 03:30 | — |