Solar flares on October 27, 2001
The most powerful solar flare in 24 hours
C9.1 (normal) flare - October 27 at 9:52 PM
Solar activity index
Value as of the end of the day on October 27, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 26, 2001 to October 27, 2001
Time zone — UTC+00
List of solar flares for October 27, 2001
The total number of solar flares of class C and higher — 11 flares
C class — 11 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.1 | 21:44 | 21:52 | 22:00 | 9682 |
| C3.5 | 20:40 | 20:42 | 20:45 | 9678 |
| C3.5 | 19:30 | 19:45 | 20:00 | — |
| C4.2 | 18:41 | 18:46 | 18:51 | 9672 |
| C3.8 | 16:30 | 16:35 | 16:41 | 9678 |
| C7.2 | 15:20 | 15:28 | 15:34 | 9682 |
| C5.4 | 13:06 | 13:11 | 13:19 | — |
| C3.6 | 12:23 | 12:27 | 12:29 | 9672 |
| C4.3 | 09:28 | 09:31 | 09:35 | — |
| C6.3 | 08:05 | 08:21 | 08:58 | 9678 |
| C3.5 | 00:34 | 00:39 | 00:45 | — |