Solar flares on October 23, 2001
The most powerful solar flare in 24 hours
C7.7 (normal) flare - October 23 at 5:33 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-02:30 (Saint john's) — summer time
List of solar flares for October 23, 2001
The total number of solar flares of class C and higher — 9 flares
C class — 9 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 21:47 | 21:51 | 21:55 | — |
| C2.3 | 12:35 | 12:42 | 12:48 | 9672 |
| C2.0 | 11:44 | 11:47 | 11:51 | 9672 |
| C6.7 | 09:55 | 09:59 | 10:02 | 9672 |
| C4.4 | 09:31 | 09:38 | 09:42 | 9672 |
| C2.6 | 06:01 | 06:05 | 06:09 | — |
| C7.7 | 05:26 | 05:33 | 05:38 | 9676 |
| C2.3 | 03:34 | 03:37 | 03:44 | 9678 |
| C2.5 | 02:35 | 02:40 | 02:50 | — |