Solar flares on September 1, 2025
The most powerful solar flare in 24 hours
C4.8 (normal) flare - September 1 at 5:25 AM
Solar activity index
Value as of the end of the day on September 1, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 31, 2025 to September 1, 2025
Time zone — UTC+02 (Vienna) — summer time
List of solar flares for September 1, 2025
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.4 | 22:55 | 23:01 | 23:09 | 4207 |
| C3.9 | 21:14 | 21:22 | 21:29 | 4197 |
| C4.8 | 05:03 | 05:25 | 05:46 | 4197 |
| C3.7 | 00:39 | 00:53 | 01:11 | 4197 |