Solar flares on December 20, 2002
The most powerful solar flare in 24 hours
M6.8 (strong) flare - December 20 at 6:18 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-07 (Fort Smith)
List of solar flares for December 20, 2002
The total number of solar flares of class C and higher — 14 flares
C class — 13 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.6 | 21:48 | 21:53 | 21:57 | 226 |
| C2.2 | 21:38 | 21:41 | 21:45 | — |
| C2.9 | 20:39 | 20:49 | 20:56 | 229 |
| C2.4 | 19:46 | 19:52 | 19:57 | 226 |
| C1.7 | 16:58 | 17:02 | 17:08 | 226 |
| C2.0 | 16:17 | 16:21 | 16:24 | 226 |
| C1.7 | 16:01 | 16:04 | 16:07 | 226 |
| C7.2 | 13:10 | 13:14 | 13:16 | 226 |
| C3.5 | 11:57 | 12:04 | 12:06 | — |
| M6.8 | 06:13 | 06:18 | 06:20 | 226 |
| C4.2 | 05:47 | 05:53 | 05:57 | — |
| C2.7 | 04:25 | 04:28 | 04:30 | — |
| C8.5 | 01:20 | 01:33 | 01:45 | 226 |
| C1.9 | 00:57 | 01:02 | 01:07 | 226 |