Solar flares on December 20, 2002
The most powerful solar flare in 24 hours
M6.8 (strong) flare - December 20 at 8:18 AM
Solar activity index
Value as of the end of the day on December 20, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 19, 2002 to December 20, 2002
Time zone — UTC-05 (Washington)
List of solar flares for December 20, 2002
The total number of solar flares of class C and higher — 15 flares
C class — 14 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.6 | 23:48 | 23:53 | 23:57 | 226 |
| C2.2 | 23:38 | 23:41 | 23:45 | — |
| C2.9 | 22:39 | 22:49 | 22:56 | 229 |
| C2.4 | 21:46 | 21:52 | 21:57 | 226 |
| C1.7 | 18:58 | 19:02 | 19:08 | 226 |
| C2.0 | 18:17 | 18:21 | 18:24 | 226 |
| C1.7 | 18:01 | 18:04 | 18:07 | 226 |
| C7.2 | 15:10 | 15:14 | 15:16 | 226 |
| C3.5 | 13:57 | 14:04 | 14:06 | — |
| M6.8 | 08:13 | 08:18 | 08:20 | 226 |
| C4.2 | 07:47 | 07:53 | 07:57 | — |
| C2.7 | 06:25 | 06:28 | 06:30 | — |
| C8.5 | 03:20 | 03:33 | 03:45 | 226 |
| C1.9 | 02:57 | 03:02 | 03:07 | 226 |
| C1.6 | 00:36 | 00:41 | 00:55 | 230 |