Solar flares on October 22, 2001
The most powerful solar flare in 24 hours
X1.2 (very strong) flare - October 22 at 7:59 PM
Solar activity index
Value as of the end of the day on October 22, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 21, 2001 to October 22, 2001
Time zone — UTC+02 (Bern) — summer time
List of solar flares for October 22, 2001
The total number of solar flares of class C and higher — 9 flares
C class — 6 | M class — 2 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.9 | 22:57 | 23:06 | 23:14 | — |
| X1.2 | 19:44 | 19:59 | 20:14 | 9672 |
| M6.7 | 16:27 | 17:08 | 17:31 | 9672 |
| C7.5 | 14:05 | 14:17 | 14:30 | 9669 |
| C5.6 | 13:36 | 13:41 | 13:45 | 9672 |
| C4.3 | 11:53 | 11:56 | 12:00 | — |
| C4.3 | 07:05 | 07:08 | 07:10 | — |
| C6.8 | 05:44 | 05:59 | 06:23 | 9669 |
| M1.0 | 02:22 | 02:40 | 02:48 | 9658 |