Solar flares on September 12, 2001
The most powerful solar flare in 24 hours
M1.0 (strong) flare - September 12 at 4:44 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+00
List of solar flares for September 12, 2001
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.6 | 21:05 | 21:49 | 22:11 | — |
| C3.4 | 13:14 | 13:18 | 13:32 | — |
| C3.0 | 11:16 | 11:19 | 11:22 | — |
| C3.8 | 10:28 | 10:33 | 10:38 | — |
| C4.7 | 08:44 | 09:11 | 09:39 | — |
| C4.9 | 06:45 | 06:49 | 06:52 | 9608 |
| M1.0 | 04:35 | 04:44 | 04:52 | — |
| C3.5 | 00:52 | 00:56 | 00:59 | — |