Solar flares on October 22, 2011
The most powerful solar flare in 24 hours
M1.3 (strong) flare - October 22 at 12:10 PM
Solar activity index
Value as of the end of the day on October 22, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 21, 2011 to October 22, 2011
Time zone — UTC+01 (London) — summer time
List of solar flares for October 22, 2011
The total number of solar flares of class C and higher — 4 flares
C class — 3 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 21:39 | 21:43 | 21:47 | 1325 |
| C2.2 | 20:11 | 20:17 | 20:23 | 1325 |
| C4.1 | 16:14 | 16:20 | 16:29 | 1324 |
| M1.3 | 11:00 | 12:10 | 14:09 | 1314 |