Solar flares on September 11, 2001
The most powerful solar flare in 24 hours
M4.5 (strong) flare - September 11 at 11:36 PM
Solar activity index
Value as of the end of the day on September 11, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 10, 2001 to September 11, 2001
Time zone — UTC+03 (Cherkessk)
List of solar flares for September 11, 2001
The total number of solar flares of class C and higher — 12 flares
C class — 9 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M4.5 | 23:25 | 23:36 | 23:43 | 9616 |
| C4.6 | 22:50 | 22:54 | 22:58 | — |
| C3.2 | 17:00 | 17:37 | 18:08 | 9615 |
| C2.9 | 15:30 | 15:33 | 15:35 | — |
| C3.3 | 12:47 | 12:51 | 12:55 | — |
| C9.7 | 12:33 | 12:37 | 12:39 | — |
| M1.2 | 09:53 | 10:04 | 10:22 | — |
| C5.1 | 06:32 | 06:49 | 07:05 | — |
| M2.6 | 03:49 | 04:11 | 04:23 | — |
| C9.5 | 03:28 | 03:33 | 03:37 | 9608 |
| C3.9 | 03:11 | 03:17 | 03:22 | 9608 |
| C3.6 | 02:45 | 02:48 | 02:51 | 9608 |