Solar flares on December 20, 2013
The most powerful solar flare in 24 hours
M1.6 (strong) flare - December 20 at 6:57 AM
Solar activity index
Value as of the end of the day on December 20, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 19, 2013 to December 20, 2013
Time zone — UTC-05 (Fermont)
List of solar flares for December 20, 2013
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.5 | 21:56 | 22:03 | 22:08 | 1928 |
| C3.0 | 19:06 | 19:13 | 19:18 | 1928 |
| C2.7 | 16:08 | 16:16 | 16:23 | — |
| C2.3 | 12:11 | 12:14 | 12:19 | 1928 |
| C5.4 | 11:23 | 11:30 | 11:34 | 1928 |
| C8.5 | 10:26 | 10:33 | 10:39 | 1928 |
| C3.2 | 09:52 | 10:04 | 10:15 | 1928 |
| M1.6 | 06:35 | 06:57 | 07:07 | 1934 |
| C2.2 | 06:05 | 06:11 | 06:18 | 1934 |