Solar flares on September 12, 2001
The most powerful solar flare in 24 hours
M4.5 (strong) flare - September 12 at 4:36 AM
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+08 (Ulan-Ude)
List of solar flares for September 12, 2001
The total number of solar flares of class C and higher — 10 flares
C class — 8 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.4 | 21:14 | 21:18 | 21:32 | — |
| C3.0 | 19:16 | 19:19 | 19:22 | — |
| C3.8 | 18:28 | 18:33 | 18:38 | — |
| C4.7 | 16:44 | 17:11 | 17:39 | — |
| C4.9 | 14:45 | 14:49 | 14:52 | 9608 |
| M1.0 | 12:35 | 12:44 | 12:52 | — |
| C3.5 | 08:52 | 08:56 | 08:59 | — |
| C4.8 | 06:31 | 06:35 | 06:37 | 9610 |
| M4.5 | 04:25 | 04:36 | 04:43 | 9616 |
| C4.6 | 03:50 | 03:54 | 03:58 | — |