Solar flares on April 21, 2024
The most powerful solar flare in 24 hours
M3.4 (strong) flare - April 21 at 4:52 PM
Solar activity index
Value as of the end of the day on April 21, 2024
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 20, 2024 to April 21, 2024
Time zone — UTC-05 (Memphis) — summer time
List of solar flares for April 21, 2024
The total number of solar flares of class C and higher — 9 flares
C class — 6 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.5 | 22:20 | 22:25 | 22:29 | — |
| C4.9 | 22:05 | 22:17 | 22:20 | 3636 |
| C6.5 | 19:30 | 19:39 | 20:13 | 3647 |
| C3.7 | 18:37 | 18:45 | 18:49 | — |
| C4.0 | 18:06 | 18:15 | 18:37 | 3655 |
| M3.4 | 16:44 | 16:52 | 16:57 | 3638 |
| C5.3 | 15:42 | 15:55 | 16:10 | 3647 |
| M2.2 | 10:07 | 10:14 | 10:20 | 3638 |
| M1.0 | 07:39 | 07:59 | 08:34 | 3645 |