Solar flares on April 22, 2011
The most powerful solar flare in 24 hours
M1.8 (strong) flare - April 22 at 5:57 AM
Solar activity index
Value as of the end of the day on April 22, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 21, 2011 to April 22, 2011
Time zone — UTC+01 (London) — summer time
List of solar flares for April 22, 2011
The total number of solar flares of class C and higher — 14 flares
C class — 12 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.6 | 20:30 | 20:35 | 20:40 | 1195 |
| C4.2 | 18:41 | 18:54 | 19:07 | 1195 |
| C5.5 | 17:56 | 18:07 | 18:14 | 1195 |
| M1.2 | 16:47 | 16:53 | 17:11 | 1195 |
| C1.4 | 15:55 | 15:59 | 16:02 | 1195 |
| C1.3 | 15:42 | 15:47 | 15:49 | 1195 |
| C1.3 | 15:04 | 15:07 | 15:09 | 1195 |
| C3.0 | 13:29 | 13:36 | 13:39 | 1195 |
| C7.7 | 12:07 | 12:25 | 12:37 | 1195 |
| C2.6 | 10:40 | 10:46 | 10:59 | 1195 |
| C2.5 | 09:04 | 09:09 | 09:12 | 1195 |
| C1.8 | 08:08 | 08:32 | 08:35 | 1195 |
| M1.8 | 05:35 | 05:57 | 06:14 | 1195 |
| C1.5 | 01:13 | 01:20 | 01:26 | 1195 |