Solar flares on October 20, 2003
The most powerful solar flare in 24 hours
M1.9 (strong) flare - October 20 at 2:22 AM
Solar activity index
Value as of the end of the day on October 20, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2003 to October 20, 2003
Time zone — UTC-05 (Montgomery) — summer time
List of solar flares for October 20, 2003
The total number of solar flares of class C and higher — 11 flares
C class — 10 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.0 | 23:51 | 23:59 | 00:09 | 484 |
| C7.9 | 22:19 | 22:45 | 23:13 | 484 |
| C2.5 | 21:49 | 21:53 | 22:00 | 484 |
| C6.2 | 17:00 | 18:18 | 17:13 | 484 |
| C4.5 | 15:30 | 15:46 | 16:02 | 484 |
| C5.9 | 14:55 | 15:02 | 15:12 | 484 |
| C2.4 | 13:21 | 13:24 | 13:26 | 484 |
| C3.2 | 10:51 | 10:55 | 10:58 | 484 |
| C3.3 | 09:45 | 09:49 | 09:52 | 484 |
| M1.9 | 01:45 | 02:22 | 02:43 | 484 |
| C1.8 | 00:34 | 00:41 | 00:44 | — |