Solar flares on April 23, 2001
The most powerful solar flare in 24 hours
M4.0 (strong) flare - April 23 at 1:30 PM
Solar activity index
Value as of the end of the day on April 23, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 22, 2001 to April 23, 2001
Time zone — UTC-07 (Nanaimo) — summer time
List of solar flares for April 23, 2001
The total number of solar flares of class C and higher — 7 flares
C class — 5 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M2.1 | 22:33 | 22:42 | 22:47 | 9433 |
| C3.4 | 20:46 | 20:57 | 21:22 | 9433 |
| C5.3 | 17:15 | 17:22 | 17:30 | 9433 |
| C3.2 | 16:36 | 16:40 | 16:44 | 9433 |
| M4.0 | 13:15 | 13:30 | 13:43 | 9433 |
| C2.8 | 05:06 | 05:23 | 05:36 | 9431 |
| C9.1 | 03:06 | 03:18 | 03:23 | 9433 |