Solar flares on October 23, 2001
The most powerful solar flare in 24 hours
C7.7 (normal) flare - October 23 at 5:03 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-03 (Halifax) — 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 | 23:35 | 23:38 | 23:45 | — |
| C1.7 | 21:17 | 21:21 | 21:25 | — |
| C2.3 | 12:05 | 12:12 | 12:18 | 9672 |
| C2.0 | 11:14 | 11:17 | 11:21 | 9672 |
| C6.7 | 09:25 | 09:29 | 09:32 | 9672 |
| C4.4 | 09:01 | 09:08 | 09:12 | 9672 |
| C2.6 | 05:31 | 05:35 | 05:39 | — |
| C7.7 | 04:56 | 05:03 | 05:08 | 9676 |
| C2.3 | 03:04 | 03:07 | 03:14 | 9678 |
| C2.5 | 02:05 | 02:10 | 02:20 | — |