Solar flares on December 28, 2021
The most powerful solar flare in 24 hours
M1.6 (strong) flare - December 28 at 10:11 AM
Solar activity index
Value as of the end of the day on December 28, 2021
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 27, 2021 to December 28, 2021
Time zone — UTC-06 (Red Lake)
List of solar flares for December 28, 2021
The total number of solar flares of class C and higher — 5 flares
C class — 4 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.6 | 22:18 | 22:28 | 22:32 | 2916 |
| M1.6 | 09:59 | 10:11 | 10:20 | 2918 |
| C1.0 | 09:03 | 09:14 | 09:32 | 2918 |
| C7.0 | 01:29 | 01:44 | 01:57 | 2918 |
| C1.3 | 00:11 | 00:18 | 00:23 | — |