Solar flares on September 12, 2001
The most powerful solar flare in 24 hours
C9.6 (normal) flare - September 12 at 4:49 PM
Solar activity index
Value as of the end of the day on September 12, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 11, 2001 to September 12, 2001
Time zone — UTC-05 (Topeka) — summer time
List of solar flares for September 12, 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 |
|---|---|---|---|---|
| C4.6 | 22:51 | 22:54 | 22:59 | 9608 |
| C6.6 | 21:00 | 21:07 | 21:17 | 9616 |
| C7.0 | 20:21 | 20:25 | 20:28 | — |
| C3.7 | 19:34 | 19:37 | 19:41 | — |
| C9.6 | 16:05 | 16:49 | 17:11 | — |
| C3.4 | 08:14 | 08:18 | 08:32 | — |
| C3.0 | 06:16 | 06:19 | 06:22 | — |
| C3.8 | 05:28 | 05:33 | 05:38 | — |
| C4.7 | 03:44 | 04:11 | 04:39 | — |
| C4.9 | 01:45 | 01:49 | 01:52 | 9608 |