Solar flares on July 20, 2004
The most powerful solar flare in 24 hours
M8.6 (strong) flare - July 20 at 6:32 AM
Solar activity index
Value as of the end of the day on July 20, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 19, 2004 to July 20, 2004
Time zone — UTC-06 (Lethbridge) — summer time
List of solar flares for July 20, 2004
The total number of solar flares of class C and higher — 7 flares
C class — 6 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.9 | 23:05 | 23:21 | 23:33 | 652 |
| C8.1 | 15:09 | 15:23 | 15:34 | 652 |
| C3.8 | 12:15 | 12:21 | 12:28 | 652 |
| M8.6 | 06:22 | 06:32 | 06:45 | 652 |
| C6.0 | 05:01 | 05:26 | 05:37 | 652 |
| C2.3 | 00:31 | 00:48 | 01:02 | — |
| C1.6 | 00:18 | 00:22 | 00:24 | — |