Solar flares on October 20, 2004
The most powerful solar flare in 24 hours
M2.6 (strong) flare - October 20 at 6:51 AM
Solar activity index
Value as of the end of the day on October 20, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2004 to October 20, 2004
Time zone — UTC-04 (Lansing) — summer time
List of solar flares for October 20, 2004
The total number of solar flares of class C and higher — 3 flares
C class — 2 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.3 | 22:10 | 22:15 | 22:18 | 687 |
| C7.8 | 20:18 | 20:40 | 20:52 | 687 |
| M2.6 | 06:43 | 06:51 | 06:56 | 687 |