Solar flares on October 27, 2021
The most powerful solar flare in 24 hours
C8.5 (normal) flare - October 27 at 12:08 AM
Solar activity index
Value as of the end of the day on October 27, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 26, 2021 to October 27, 2021
Time zone — UTC-06 (Lethbridge) — summer time
List of solar flares for October 27, 2021
The total number of solar flares of class C and higher — 16 flares
C class — 16 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 19:32 | 19:38 | 19:45 | 2887 |
| C1.1 | 16:35 | 16:44 | 17:00 | 2887 |
| C1.6 | 16:07 | 16:22 | 16:27 | 2887 |
| C1.1 | 15:53 | 15:59 | 16:05 | — |
| C2.1 | 14:44 | 14:50 | 14:58 | 2891 |
| C2.1 | 12:48 | 12:58 | 13:04 | 2891 |
| C1.4 | 11:57 | 12:05 | 12:13 | 2891 |
| C2.1 | 10:21 | 10:36 | 10:44 | 2891 |
| C1.1 | 07:35 | 07:42 | 07:48 | 2887 |
| C2.3 | 06:11 | 06:19 | 06:25 | 2889 |
| C1.6 | 05:49 | 05:59 | 06:08 | 2889 |
| C1.5 | 04:14 | 04:29 | 04:36 | — |
| C2.8 | 03:50 | 03:54 | 03:59 | 2887 |
| C1.7 | 02:44 | 02:49 | 02:56 | — |
| C1.5 | 01:01 | 01:10 | 01:14 | 2887 |
| C8.5 | 23:47 | 00:08 | 00:19 | 2887 |