Solar flares on October 23, 2025
The most powerful solar flare in 24 hours
C3.2 (normal) flare - October 23 at 5:08 AM
Solar activity index
Value as of the end of the day on October 23, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 22, 2025 to October 23, 2025
Time zone — UTC+00 (Reykjavik)
List of solar flares for October 23, 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 |
|---|---|---|---|---|
| C2.1 | 15:02 | 15:06 | 15:41 | 4256 |
| C1.3 | 14:46 | 14:50 | 14:54 | 4267 |
| C1.2 | 14:33 | 14:43 | 14:46 | 4267 |
| C1.5 | 08:41 | 08:54 | 08:59 | 4267 |
| C3.2 | 04:56 | 05:08 | 05:15 | 4267 |
| C2.0 | 04:11 | 04:24 | 04:29 | — |
| C2.4 | 01:41 | 01:59 | 02:14 | — |