Solar flares on October 27, 2001
The most powerful solar flare in 24 hours
C9.1 (normal) flare - October 27 at 11:52 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+02 (Monaco) — summer time
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 | 23:44 | 23:52 | 00:00 | 9682 |
| C3.5 | 22:40 | 22:42 | 22:45 | 9678 |
| C3.5 | 21:30 | 21:45 | 22:00 | — |
| C4.2 | 20:41 | 20:46 | 20:51 | 9672 |
| C3.8 | 18:30 | 18:35 | 18:41 | 9678 |
| C7.2 | 17:20 | 17:28 | 17:34 | 9682 |
| C5.4 | 15:06 | 15:11 | 15:19 | — |
| C3.6 | 14:23 | 14:27 | 14:29 | 9672 |
| C4.3 | 11:28 | 11:31 | 11:35 | — |
| C6.3 | 10:05 | 10:21 | 10:58 | 9678 |
| C3.5 | 02:34 | 02:39 | 02:45 | — |