Solar flares on August 4, 2025
The most powerful solar flare in 24 hours
M2.0 (strong) flare - August 4 at 4:57 AM
Solar activity index
Value as of the end of the day on August 4, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 3, 2025 to August 4, 2025
Time zone — UTC+00
List of solar flares for August 4, 2025
The total number of solar flares of class C and higher — 8 flares
C class — 6 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 19:15 | 19:20 | 19:26 | 4168 |
| C1.8 | 14:56 | 15:05 | 15:13 | 4167 |
| C5.1 | 10:31 | 10:53 | 11:31 | — |
| M1.4 | 05:05 | 05:15 | 05:21 | 4168 |
| M2.0 | 04:52 | 04:57 | 05:05 | 4168 |
| C2.8 | 03:14 | 03:20 | 03:22 | 4168 |
| C8.7 | 01:24 | 01:30 | 01:34 | 4168 |
| C2.2 | 00:16 | 00:22 | 00:28 | — |