Solar flares on April 28, 2025
The most powerful solar flare in 24 hours
C2.2 (normal) flare - April 28 at 1:02 PM
Solar activity index
Value as of the end of the day on April 28, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 27, 2025 to April 28, 2025
Time zone — UTC+07 (Norilsk)
List of solar flares for April 28, 2025
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.2 | 12:46 | 13:02 | 13:21 | 4069 |
| C2.1 | 05:38 | 05:44 | 05:46 | 4064 |
| C1.5 | 05:20 | 05:29 | 05:38 | — |
| C2.1 | 01:37 | 01:49 | 02:04 | 4064 |
| C1.4 | 00:17 | 00:24 | 00:30 | 4070 |