Solar flares on August 20, 2002
The most powerful solar flare in 24 hours
M5.0 (strong) flare - August 20 at 5:40 AM
Solar activity index
Value as of the end of the day on August 20, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 19, 2002 to August 20, 2002
Time zone — UTC+04 (Samara)
List of solar flares for August 20, 2002
The total number of solar flares of class C and higher — 20 flares
C class — 16 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.3 | 22:21 | 22:28 | 22:38 | 69 |
| C9.9 | 21:34 | 21:55 | 22:00 | 69 |
| C5.2 | 20:55 | 21:06 | 21:11 | 69 |
| C3.3 | 20:34 | 20:40 | 20:47 | 85 |
| C3.0 | 19:47 | 19:52 | 19:55 | 81 |
| C5.4 | 18:29 | 18:37 | 18:46 | 83 |
| C3.3 | 14:26 | 14:31 | 14:34 | 79 |
| C2.0 | 14:03 | 14:06 | 14:11 | 79 |
| C2.6 | 13:44 | 13:47 | 13:50 | 79 |
| C1.9 | 13:33 | 13:36 | 13:38 | — |
| M3.4 | 12:22 | 12:26 | 12:30 | 69 |
| C2.7 | 10:17 | 10:20 | 10:23 | 79 |
| C4.0 | 09:11 | 09:15 | 09:18 | 69 |
| C2.6 | 07:34 | 07:43 | 07:48 | 69 |
| M1.4 | 06:53 | 06:57 | 07:01 | 69 |
| C5.5 | 06:08 | 06:14 | 06:25 | 69 |
| M5.0 | 05:33 | 05:40 | 05:43 | 69 |
| C7.0 | 02:59 | 03:02 | 03:05 | — |
| M3.1 | 00:56 | 01:02 | 01:06 | 69 |
| C2.4 | 00:38 | 00:41 | 00:45 | — |