Solar flares on October 20, 2011
The most powerful solar flare in 24 hours
M1.6 (strong) flare - October 20 at 9:25 AM
Solar activity index
Value as of the end of the day on October 20, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2011 to October 20, 2011
Time zone — UTC+06 (Omsk)
List of solar flares for October 20, 2011
The total number of solar flares of class C and higher — 6 flares
C class — 5 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.4 | 21:33 | 21:39 | 21:45 | 1324 |
| M1.6 | 09:10 | 09:25 | 09:44 | — |
| C1.5 | 08:00 | 08:03 | 08:05 | — |
| C3.5 | 02:31 | 02:37 | 02:39 | 1314 |
| C1.7 | 01:55 | 01:58 | 02:00 | 1324 |
| C3.4 | 00:45 | 00:49 | 00:51 | 1324 |