Solar flares on December 21, 2002
The most powerful solar flare in 24 hours
C4.6 (normal) flare - December 21 at 7:53 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+03 (Murmansk)
List of solar flares for December 21, 2002
The total number of solar flares of class C and higher — 9 flares
C class — 9 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 21:56 | 22:10 | 22:17 | 226 |
| C1.6 | 12:46 | 12:51 | 12:54 | 226 |
| C4.6 | 07:48 | 07:53 | 07:57 | 226 |
| C2.2 | 07:38 | 07:41 | 07:45 | — |
| C2.9 | 06:39 | 06:49 | 06:56 | 229 |
| C2.4 | 05:46 | 05:52 | 05:57 | 226 |
| C1.7 | 02:58 | 03:02 | 03:08 | 226 |
| C2.0 | 02:17 | 02:21 | 02:24 | 226 |
| C1.7 | 02:01 | 02:04 | 02:07 | 226 |