Solar flares on September 22, 2011
The most powerful solar flare in 24 hours
X1.4 (very strong) flare - September 22 at 11:01 AM
Solar activity index
Value as of the end of the day on September 22, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 21, 2011 to September 22, 2011
Time zone — UTC+00
List of solar flares for September 22, 2011
The total number of solar flares of class C and higher — 7 flares
C class — 5 | M class — 1 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.1 | 23:51 | 23:56 | 00:02 | 1295 |
| C5.5 | 22:21 | 22:30 | 22:36 | 1295 |
| C4.0 | 20:14 | 20:20 | 20:33 | 1295 |
| X1.4 | 10:29 | 11:01 | 11:44 | 1302 |
| M1.1 | 09:53 | 10:00 | 10:09 | 1302 |
| C8.9 | 08:49 | 09:05 | 09:09 | 1302 |
| C6.6 | 04:20 | 04:28 | 04:41 | 1295 |