Solar flares on December 30, 2011
The most powerful solar flare in 24 hours
M1.2 (strong) flare - December 30 at 3:09 AM
Solar activity index
Value as of the end of the day on December 30, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 29, 2011 to December 30, 2011
Time zone — UTC+00 (London)
List of solar flares for December 30, 2011
The total number of solar flares of class C and higher — 13 flares
C class — 12 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.6 | 23:28 | 23:33 | 23:38 | 1389 |
| C3.9 | 20:57 | 21:09 | 21:20 | 1389 |
| C4.4 | 20:13 | 20:24 | 20:31 | — |
| C1.8 | 18:16 | 18:23 | 18:42 | 1389 |
| C1.8 | 13:36 | 13:41 | 13:49 | 1389 |
| C1.3 | 11:52 | 12:20 | 12:33 | — |
| C8.4 | 10:27 | 10:32 | 10:37 | 1389 |
| C1.6 | 09:59 | 10:06 | 10:10 | 1389 |
| C3.4 | 08:19 | 08:25 | 08:30 | 1389 |
| C1.8 | 05:03 | 05:07 | 05:11 | — |
| C1.9 | 04:04 | 04:36 | 04:45 | — |
| C1.1 | 03:50 | 03:57 | 04:02 | — |
| M1.2 | 03:03 | 03:09 | 03:13 | 1389 |