Solar flares on September 11, 2025
The most powerful solar flare in 24 hours
C7.6 (normal) flare - September 11 at 6:21 PM
Solar activity index
Value as of the end of the day on September 11, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 10, 2025 to September 11, 2025
Time zone — UTC+03 (Cheboksary)
List of solar flares for September 11, 2025
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 22:37 | 22:48 | 23:03 | 4216 |
| C1.0 | 22:16 | 22:24 | 22:28 | 4213 |
| C1.2 | 21:58 | 22:03 | 22:07 | 4207 |
| C1.9 | 20:03 | 20:07 | 20:10 | 4207 |
| C7.6 | 18:09 | 18:21 | 18:33 | 4207 |
| C1.0 | 07:04 | 07:09 | 07:11 | 4207 |
| C1.1 | 06:17 | 06:27 | 07:04 | 4207 |