Solar flares on August 28, 2025
The most powerful solar flare in 24 hours
M1.5 (strong) flare - August 28 at 4:40 PM
Solar activity index
Value as of the end of the day on August 28, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 27, 2025 to August 28, 2025
Time zone — UTC-04 (Fermont) — summer time
List of solar flares for August 28, 2025
The total number of solar flares of class C and higher — 15 flares
C class — 11 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.3 | 22:00 | 22:04 | 22:07 | 4197 |
| C5.3 | 21:32 | 21:43 | 22:00 | 4197 |
| C6.9 | 20:38 | 20:44 | 20:57 | 4203 |
| C6.5 | 20:17 | 20:28 | 20:38 | 4195 |
| C7.0 | 18:35 | 18:42 | 18:45 | 4201 |
| C5.5 | 17:45 | 17:54 | 18:13 | 4204 |
| M1.5 | 16:30 | 16:40 | 16:46 | 4203 |
| C6.0 | 16:13 | 16:27 | 16:30 | 4197 |
| M1.0 | 14:48 | 15:03 | 15:09 | 4197 |
| C3.6 | 14:10 | 14:17 | 14:23 | — |
| M1.2 | 13:00 | 13:11 | 13:17 | 4203 |
| C4.9 | 11:13 | 11:20 | 11:34 | 4203 |
| M1.1 | 10:11 | 10:16 | 10:22 | 4197 |
| C8.5 | 10:00 | 10:07 | 10:11 | 4197 |
| C4.8 | 06:23 | 06:28 | 06:33 | 4203 |