Solar flares on October 20, 2002
The most powerful solar flare in 24 hours
M1.8 (strong) flare - October 20 at 5:28 PM
Solar activity index
Value as of the end of the day on October 20, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2002 to October 20, 2002
Time zone — UTC+03 (Cherkessk)
List of solar flares for October 20, 2002
The total number of solar flares of class C and higher — 16 flares
C class — 12 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.1 | 22:17 | 22:21 | 22:25 | 162 |
| C2.6 | 20:52 | 21:05 | 21:10 | 154 |
| M1.8 | 17:21 | 17:28 | 17:35 | 160 |
| C6.6 | 17:10 | 17:13 | 17:21 | 154 |
| C5.9 | 16:51 | 17:02 | 17:10 | 162 |
| C2.8 | 13:25 | 13:37 | 13:44 | — |
| C2.4 | 12:09 | 12:15 | 12:19 | 158 |
| C2.0 | 11:59 | 12:03 | 12:06 | 162 |
| C3.6 | 09:11 | 09:14 | 09:17 | 162 |
| C6.9 | 08:27 | 08:31 | 08:34 | 154 |
| M1.2 | 08:01 | 08:14 | 08:19 | 160 |
| M1.5 | 06:31 | 06:39 | 07:00 | 162 |
| C7.5 | 05:19 | 05:23 | 05:27 | 160 |
| M1.8 | 03:32 | 03:45 | 04:11 | 162 |
| C7.9 | 01:46 | 02:01 | 02:14 | — |
| C5.0 | 00:11 | 00:16 | 00:21 | 154 |