Solar flares on September 22, 2011
The most powerful solar flare in 24 hours
X1.4 (very strong) flare - September 22 at 8:01 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-03 (Halifax) — summer time
List of solar flares for September 22, 2011
The total number of solar flares of class C and higher — 9 flares
C class — 6 | M class — 2 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.6 | 22:47 | 22:59 | 23:10 | 1295 |
| C9.6 | 21:29 | 21:33 | 21:37 | — |
| C4.1 | 20:51 | 20:56 | 21:02 | 1295 |
| C5.5 | 19:21 | 19:30 | 19:36 | 1295 |
| C4.0 | 17:14 | 17:20 | 17:33 | 1295 |
| X1.4 | 07:29 | 08:01 | 08:44 | 1302 |
| M1.1 | 06:53 | 07:00 | 07:09 | 1302 |
| C8.9 | 05:49 | 06:05 | 06:09 | 1302 |
| C6.6 | 01:20 | 01:28 | 01:41 | 1295 |