Solar flares on October 23, 2001
The most powerful solar flare in 24 hours
C7.7 (normal) flare - October 23 at 4:03 AM
Solar activity index
Value as of the end of the day on October 23, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 22, 2001 to October 23, 2001
Time zone — UTC-04 (Barrie) — summer time
List of solar flares for October 23, 2001
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.9 | 22:35 | 22:38 | 22:45 | — |
| C1.7 | 20:17 | 20:21 | 20:25 | — |
| C2.3 | 11:05 | 11:12 | 11:18 | 9672 |
| C2.0 | 10:14 | 10:17 | 10:21 | 9672 |
| C6.7 | 08:25 | 08:29 | 08:32 | 9672 |
| C4.4 | 08:01 | 08:08 | 08:12 | 9672 |
| C2.6 | 04:31 | 04:35 | 04:39 | — |
| C7.7 | 03:56 | 04:03 | 04:08 | 9676 |
| C2.3 | 02:04 | 02:07 | 02:14 | 9678 |
| C2.5 | 01:05 | 01:10 | 01:20 | — |