Solar flares on April 28, 2026
The most powerful solar flare in 24 hours
M1.5 (strong) flare - April 28 at 1:53 PM
Solar activity index
Value as of the end of the day on April 28, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 27, 2026 to April 28, 2026
Time zone — UTC+00
List of solar flares for April 28, 2026
The total number of solar flares of class C and higher — 19 flares
C class — 16 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.0 | 22:39 | 22:47 | 23:04 | 4425 |
| C3.1 | 22:02 | 22:05 | 22:07 | 4420 |
| C2.5 | 19:49 | 19:53 | 19:55 | 4428 |
| C8.1 | 18:43 | 18:49 | 18:53 | 4425 |
| C2.7 | 16:01 | 16:08 | 16:11 | 4420 |
| C4.2 | 15:49 | 15:53 | 15:55 | 4420 |
| C2.6 | 14:30 | 14:33 | 14:36 | 4420 |
| M1.1 | 14:03 | 14:07 | 14:09 | 4420 |
| M1.5 | 13:49 | 13:53 | 13:55 | 4420 |
| M1.0 | 12:17 | 12:23 | 12:29 | 4420 |
| C7.7 | 12:00 | 12:14 | 12:17 | 4420 |
| C9.3 | 11:41 | 11:46 | 11:48 | 4420 |
| C3.1 | 11:12 | 11:18 | 11:21 | 4420 |
| C7.1 | 09:28 | 09:32 | 09:41 | 4420 |
| C9.0 | 09:14 | 09:23 | 09:26 | 4420 |
| C6.0 | 08:09 | 08:17 | 08:22 | 4420 |
| C1.6 | 04:58 | 05:06 | 05:10 | 4424 |
| C2.7 | 01:22 | 01:32 | 01:49 | 4425 |
| C2.3 | 00:54 | 01:03 | 01:10 | 4425 |