Solar flares on August 20, 2002
The most powerful solar flare in 24 hours
M3.4 (strong) flare - August 20 at 4:26 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 (Windsor) — summer time
List of solar flares for August 20, 2002
The total number of solar flares of class C and higher — 20 flares
C class — 17 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.4 | 21:35 | 21:41 | 21:45 | 69 |
| C3.3 | 20:57 | 21:01 | 21:06 | 69 |
| C6.4 | 19:08 | 19:13 | 19:17 | 69 |
| C5.4 | 18:42 | 18:45 | 18:47 | 69 |
| C6.2 | 18:21 | 18:28 | 18:30 | 69 |
| C3.5 | 18:06 | 18:11 | 18:13 | — |
| M1.2 | 16:53 | 17:14 | 17:24 | 85 |
| C3.3 | 14:21 | 14:28 | 14:38 | 69 |
| C9.9 | 13:34 | 13:55 | 14:00 | 69 |
| C5.2 | 12:55 | 13:06 | 13:11 | 69 |
| C3.3 | 12:34 | 12:40 | 12:47 | 85 |
| C3.0 | 11:47 | 11:52 | 11:55 | 81 |
| C5.4 | 10:29 | 10:37 | 10:46 | 83 |
| C3.3 | 06:26 | 06:31 | 06:34 | 79 |
| C2.0 | 06:03 | 06:06 | 06:11 | 79 |
| C2.6 | 05:44 | 05:47 | 05:50 | 79 |
| C1.9 | 05:33 | 05:36 | 05:38 | — |
| M3.4 | 04:22 | 04:26 | 04:30 | 69 |
| C2.7 | 02:17 | 02:20 | 02:23 | 79 |
| C4.0 | 01:11 | 01:15 | 01:18 | 69 |