Solar flares on December 21, 2002
The most powerful solar flare in 24 hours
C4.6 (normal) flare - December 21 at 4:53 AM
Solar activity index
Value as of the end of the day on December 21, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 20, 2002 to December 21, 2002
Time zone — UTC+00 (London)
List of solar flares for December 21, 2002
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 21:44 | 21:47 | 21:51 | — |
| C1.0 | 18:56 | 19:10 | 19:17 | 226 |
| C1.6 | 09:46 | 09:51 | 09:54 | 226 |
| C4.6 | 04:48 | 04:53 | 04:57 | 226 |
| C2.2 | 04:38 | 04:41 | 04:45 | — |
| C2.9 | 03:39 | 03:49 | 03:56 | 229 |
| C2.4 | 02:46 | 02:52 | 02:57 | 226 |
| C1.7 | 23:58 | 00:02 | 00:08 | 226 |