Solar flares on October 13, 2025
The most powerful solar flare in 24 hours
M2.7 (strong) flare - October 13 at 3:19 AM
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-06 (El Paso) — summer time
List of solar flares for October 13, 2025
The total number of solar flares of class C and higher — 22 flares
C class — 19 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.9 | 23:37 | 23:47 | 00:02 | 4246 |
| C3.4 | 22:03 | 22:14 | 22:24 | 4246 |
| C2.5 | 21:26 | 21:36 | 21:40 | 4246 |
| C4.2 | 20:58 | 21:04 | 21:19 | 4246 |
| M2.0 | 18:35 | 18:41 | 18:44 | 4246 |
| C1.5 | 15:14 | 15:21 | 15:27 | 4246 |
| C1.6 | 14:48 | 14:55 | 15:14 | 4246 |
| C8.0 | 13:01 | 13:08 | 13:13 | 4246 |
| C6.1 | 12:48 | 12:59 | 13:01 | 4246 |
| C3.0 | 12:04 | 12:14 | 12:26 | 4246 |
| C2.1 | 11:12 | 11:17 | 11:20 | 4246 |
| C7.2 | 10:39 | 10:53 | 10:59 | 4246 |
| C3.3 | 09:58 | 10:02 | 10:05 | 4246 |
| C2.6 | 09:36 | 09:43 | 09:56 | 4246 |
| M1.2 | 07:04 | 07:18 | 07:39 | 4246 |
| C3.5 | 06:53 | 07:02 | 07:04 | 4246 |
| C9.5 | 04:32 | 04:47 | 04:55 | 4248 |
| M2.7 | 02:55 | 03:19 | 03:31 | 4246 |
| C9.8 | 01:39 | 01:47 | 01:57 | 4246 |
| C5.7 | 01:21 | 01:30 | 01:36 | 4248 |
| C7.6 | 00:49 | 00:54 | 01:00 | 4246 |
| C4.1 | 00:42 | 00:46 | 00:49 | 4246 |