Solar flares on September 13, 2025
The most powerful solar flare in 24 hours
C1.5 (normal) flare - September 13 at 11:14 AM
Solar activity index
Value as of the end of the day on September 13, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 12, 2025 to September 13, 2025
Time zone — UTC+03 (Simferopol)
List of solar flares for September 13, 2025
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 21:57 | 22:05 | 22:12 | — |
| C1.5 | 10:33 | 11:14 | 11:44 | 4207 |
| C1.1 | 08:03 | 08:09 | 08:19 | 4207 |
| C1.1 | 02:38 | 02:44 | 03:17 | 4213 |
| C1.4 | 01:49 | 02:00 | 02:12 | 4207 |