Solar flares on December 21, 2002
The most powerful solar flare in 24 hours
M1.1 (strong) flare - December 21 at 7:52 PM
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-07 (Hay River)
List of solar flares for December 21, 2002
The total number of solar flares of class C and higher — 4 flares
C class — 3 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.1 | 19:14 | 19:52 | 20:12 | 223 |
| C1.2 | 14:44 | 14:47 | 14:51 | — |
| C1.0 | 11:56 | 12:10 | 12:17 | 226 |
| C1.6 | 02:46 | 02:51 | 02:54 | 226 |