Solar flares on September 5, 2025
The most powerful solar flare in 24 hours
C4.5 (normal) flare - September 5 at 10:52 PM
Solar activity index
Value as of the end of the day on September 5, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 4, 2025 to September 5, 2025
Time zone — UTC-06 (Fort Smith) — summer time
List of solar flares for September 5, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.5 | 22:44 | 22:52 | 22:58 | 4207 |
| C3.5 | 22:06 | 22:14 | 22:18 | 4202 |
| C2.0 | 21:52 | 22:03 | 22:06 | 4207 |
| C2.3 | 19:34 | 19:42 | 19:47 | 4207 |
| C2.4 | 18:39 | 18:46 | 18:48 | — |
| C2.2 | 04:05 | 04:14 | 04:22 | 4197 |