Solar flares on October 21, 2000
The most powerful solar flare in 24 hours
M3.0 (strong) flare - October 21 at 2:31 PM
Solar activity index
Value as of the end of the day on October 21, 2000
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 20, 2000 to October 21, 2000
Time zone — UTC-04 (Augusta) — summer time
List of solar flares for October 21, 2000
The total number of solar flares of class C and higher — 6 flares
C class — 5 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.6 | 21:03 | 22:31 | 23:57 | 9203 |
| M3.0 | 14:13 | 14:31 | 14:46 | 9201 |
| C2.3 | 09:59 | 10:06 | 10:10 | 9201 |
| C5.6 | 05:51 | 05:56 | 06:03 | 9199 |
| C2.4 | 02:57 | 03:01 | 03:06 | 9201 |
| C1.6 | 01:00 | 01:26 | 02:13 | 9199 |