Solar flares on June 28, 2026
The most powerful solar flare in 24 hours
C9.5 (normal) flare - June 28 at 3:44 PM
Solar activity index
Value as of the end of the day on June 28, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 27, 2026 to June 28, 2026
Time zone — UTC-06 (Calgary) — summer time
List of solar flares for June 28, 2026
The total number of solar flares of class C and higher — 11 flares
C class — 11 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.8 | 21:07 | 21:17 | 21:22 | 4479 |
| C3.0 | 20:43 | 20:50 | 20:56 | 4475 |
| C3.1 | 20:26 | 20:32 | 20:35 | 4479 |
| C5.1 | 18:32 | 18:41 | 18:49 | 4479 |
| C8.7 | 15:55 | 15:59 | 16:05 | 4479 |
| C9.5 | 15:38 | 15:44 | 15:52 | — |
| C3.3 | 14:50 | 14:59 | 15:03 | 4477 |
| C2.8 | 14:38 | 14:46 | 14:50 | 4479 |
| C2.7 | 09:01 | 09:09 | 09:15 | 4478 |
| C2.2 | 01:03 | 01:07 | 01:09 | 4475 |
| C2.4 | 00:46 | 00:54 | 01:03 | 4475 |