Solar flares on October 20, 2002
The most powerful solar flare in 24 hours
M1.8 (strong) flare - October 20 at 10:28 AM
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-04 (Dover) — summer time
List of solar flares for October 20, 2002
The total number of solar flares of class C and higher — 14 flares
C class — 12 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.3 | 20:45 | 20:57 | 21:04 | 160 |
| C2.9 | 20:00 | 20:23 | 20:40 | — |
| C6.3 | 17:26 | 17:37 | 17:48 | — |
| C3.1 | 15:17 | 15:21 | 15:25 | 162 |
| C2.6 | 13:52 | 14:05 | 14:10 | 154 |
| M1.8 | 10:21 | 10:28 | 10:35 | 160 |
| C6.6 | 10:10 | 10:13 | 10:21 | 154 |
| C5.9 | 09:51 | 10:02 | 10:10 | 162 |
| C2.8 | 06:25 | 06:37 | 06:44 | — |
| C2.4 | 05:09 | 05:15 | 05:19 | 158 |
| C2.0 | 04:59 | 05:03 | 05:06 | 162 |
| C3.6 | 02:11 | 02:14 | 02:17 | 162 |
| C6.9 | 01:27 | 01:31 | 01:34 | 154 |
| M1.2 | 01:01 | 01:14 | 01:19 | 160 |