Solar flares on September 11, 2011
The most powerful solar flare in 24 hours
C6.6 (normal) flare - September 11 at 9:51 AM
Solar activity index
Value as of the end of the day on September 11, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 10, 2011 to September 11, 2011
Time zone — UTC+01 (London) — summer time
List of solar flares for September 11, 2011
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 22:19 | 22:25 | 22:35 | 1283 |
| C1.7 | 20:45 | 20:49 | 20:52 | 1283 |
| C1.9 | 14:18 | 14:26 | 14:36 | 1283 |
| C6.6 | 09:41 | 09:51 | 10:27 | 1283 |