Solar flares on October 4, 2001
The most powerful solar flare in 24 hours
C3.1 (normal) flare - October 4 at 12:33 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+00
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 | 21:12 | 21:16 | 21:20 | — |
| C1.9 | 19:50 | 19:58 | 20:04 | 9641 |
| C2.4 | 14:13 | 14:23 | 14:27 | 9644 |
| C3.1 | 11:53 | 12:33 | 13:12 | 9634 |
| C2.3 | 06:31 | 06:34 | 06:36 | 9645 |
| C2.7 | 06:05 | 06:11 | 06:16 | 9645 |
| C2.0 | 04:11 | 04:16 | 04:22 | — |
| C2.6 | 03:08 | 03:12 | 03:17 | 9636 |
| C2.7 | 02:04 | 02:09 | 02:13 | — |
| C2.2 | 01:44 | 01:49 | 02:02 | — |