Solar flares on October 4, 2001
The most powerful solar flare in 24 hours
C3.1 (normal) flare - October 4 at 1:33 PM
Solar activity index
Value as of the end of the day on October 4, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 3, 2001 to October 4, 2001
Time zone — UTC+01 (Dublin) — summer time
List of solar flares for October 4, 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 |
|---|---|---|---|---|
| C2.0 | 22:12 | 22:16 | 22:20 | — |
| C1.9 | 20:50 | 20:58 | 21:04 | 9641 |
| C2.4 | 15:13 | 15:23 | 15:27 | 9644 |
| C3.1 | 12:53 | 13:33 | 14:12 | 9634 |
| C2.3 | 07:31 | 07:34 | 07:36 | 9645 |
| C2.7 | 07:05 | 07:11 | 07:16 | 9645 |
| C2.0 | 05:11 | 05:16 | 05:22 | — |
| C2.6 | 04:08 | 04:12 | 04:17 | 9636 |
| C2.7 | 03:04 | 03:09 | 03:13 | — |
| C2.2 | 02:44 | 02:49 | 03:02 | — |