Solar flares on January 20, 2003
The most powerful solar flare in 24 hours
C8.1 (normal) flare - January 20 at 9:28 PM
Solar activity index
Value as of the end of the day on January 20, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 19, 2003 to January 20, 2003
Time zone — UTC-05 (Granby)
List of solar flares for January 20, 2003
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.1 | 21:23 | 21:28 | 21:33 | — |
| C2.0 | 20:21 | 20:34 | 20:40 | — |
| C1.5 | 18:53 | 18:58 | 19:01 | — |
| C1.6 | 18:22 | 18:27 | 18:35 | 260 |
| C1.5 | 16:43 | 16:46 | 16:49 | 267 |
| C1.7 | 13:30 | 14:21 | 14:33 | — |
| C4.3 | 02:04 | 02:10 | 02:16 | 260 |