Solar flares on October 31, 2001
The most powerful solar flare in 24 hours
M3.2 (strong) flare - October 31 at 4:09 AM
Solar activity index
Value as of the end of the day on October 31, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 30, 2001 to October 31, 2001
Time zone — UTC-04 (Concord) — summer time
List of solar flares for October 31, 2001
The total number of solar flares of class C and higher — 7 flares
C class — 4 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.6 | 23:46 | 23:50 | 23:57 | — |
| C3.3 | 20:34 | 20:39 | 20:44 | — |
| C2.4 | 19:14 | 19:19 | 19:26 | — |
| M1.0 | 17:02 | 17:42 | 17:55 | 9687 |
| C5.6 | 12:01 | 12:05 | 12:08 | 9682 |
| M1.5 | 06:39 | 06:51 | 07:00 | — |
| M3.2 | 03:34 | 04:09 | 04:19 | 9682 |