Solar flares on December 13, 2011
The most powerful solar flare in 24 hours
C4.8 (normal) flare - December 13 at 11:36 PM
Solar activity index
Value as of the end of the day on December 13, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 12, 2011 to December 13, 2011
Time zone — UTC+00 (London)
List of solar flares for December 13, 2011
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.1 | 23:53 | 23:57 | 00:00 | 1367 |
| C4.8 | 23:31 | 23:36 | 23:46 | 1367 |
| C1.0 | 21:59 | 22:02 | 22:04 | 1376 |
| C1.1 | 14:11 | 14:14 | 14:17 | 1367 |
| C1.4 | 07:46 | 08:00 | 08:07 | 1367 |