Solar flares on October 13, 2025
The most powerful solar flare in 24 hours
M2.7 (strong) flare - October 13 at 5:19 PM
Solar activity index
Value as of the end of the day on October 13, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 12, 2025 to October 13, 2025
Time zone — UTC+08 (Ulan-Ude)
List of solar flares for October 13, 2025
The total number of solar flares of class C and higher — 21 flares
C class — 18 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 23:36 | 23:43 | 23:56 | 4246 |
| M1.2 | 21:04 | 21:18 | 21:39 | 4246 |
| C3.5 | 20:53 | 21:02 | 21:04 | 4246 |
| C9.5 | 18:32 | 18:47 | 18:55 | 4248 |
| M2.7 | 16:55 | 17:19 | 17:31 | 4246 |
| C9.8 | 15:39 | 15:47 | 15:57 | 4246 |
| C5.7 | 15:21 | 15:30 | 15:36 | 4248 |
| C7.6 | 14:49 | 14:54 | 15:00 | 4246 |
| C4.1 | 14:42 | 14:46 | 14:49 | 4246 |
| M1.9 | 12:59 | 13:26 | 13:45 | 4246 |
| C5.8 | 12:04 | 12:13 | 12:19 | 4248 |
| C2.3 | 11:53 | 12:02 | 12:04 | 4248 |
| C9.3 | 08:17 | 08:36 | 08:51 | 4246 |
| C6.4 | 08:02 | 08:13 | 08:17 | 4248 |
| C3.5 | 07:23 | 07:31 | 07:40 | 4246 |
| C4.4 | 05:18 | 05:37 | 05:51 | 4246 |
| C2.4 | 04:50 | 05:02 | 05:10 | 4246 |
| C2.4 | 03:56 | 04:01 | 04:04 | 4246 |
| C2.3 | 03:43 | 03:52 | 03:56 | 4246 |
| C2.0 | 03:33 | 03:39 | 03:43 | 4250 |
| C2.7 | 01:31 | 01:39 | 01:45 | 4246 |