Solar flares on October 20, 2001
The most powerful solar flare in 24 hours
M3.3 (strong) flare - October 20 at 6:25 AM
Solar activity index
Value as of the end of the day on October 20, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2001 to October 20, 2001
Time zone — UTC+07 (Barnaul)
List of solar flares for October 20, 2001
The total number of solar flares of class C and higher — 5 flares
C class — 4 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.1 | 14:00 | 14:09 | 14:25 | 9670 |
| C7.3 | 07:11 | 07:28 | 07:42 | — |
| M3.3 | 06:14 | 06:25 | 06:33 | 9658 |
| C3.9 | 04:36 | 05:02 | 05:09 | 9658 |
| C4.1 | 03:58 | 04:03 | 04:08 | 9658 |