Solar flares on August 21, 2023
The most powerful solar flare in 24 hours
C4.7 (normal) flare - August 21 at 5:43 PM
Solar activity index
Value as of the end of the day on August 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 20, 2023 to August 21, 2023
Time zone — UTC-06 (Cheyenne) — summer time
List of solar flares for August 21, 2023
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.7 | 17:23 | 17:43 | 17:47 | 3413 |
| C1.3 | 13:00 | 13:09 | 13:18 | — |
| C3.1 | 06:18 | 06:38 | 06:53 | 3403 |
| C4.3 | 01:35 | 01:53 | 02:11 | — |