Solar flares on October 4, 2001
The most powerful solar flare in 24 hours
C3.1 (normal) flare - October 4 at 9:33 AM
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-03 (Halifax) — summer time
List of solar flares for October 4, 2001
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.0 | 18:12 | 18:16 | 18:20 | — |
| C1.9 | 16:50 | 16:58 | 17:04 | 9641 |
| C2.4 | 11:13 | 11:23 | 11:27 | 9644 |
| C3.1 | 08:53 | 09:33 | 10:12 | 9634 |
| C2.3 | 03:31 | 03:34 | 03:36 | 9645 |
| C2.7 | 03:05 | 03:11 | 03:16 | 9645 |
| C2.0 | 01:11 | 01:16 | 01:22 | — |
| C2.6 | 00:08 | 00:12 | 00:17 | 9636 |