Solar flares on September 4, 2025
The most powerful solar flare in 24 hours
M1.0 (strong) flare - September 4 at 4:44 PM
Solar activity index
Value as of the end of the day on September 4, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 3, 2025 to September 4, 2025
Time zone — UTC+03 (Nalchik)
List of solar flares for September 4, 2025
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.0 | 16:36 | 16:44 | 16:49 | 4207 |
| C2.5 | 16:19 | 16:26 | 16:36 | 4211 |
| C2.8 | 13:48 | 13:55 | 13:59 | 4207 |
| C2.1 | 12:15 | 12:24 | 12:32 | 4199 |
| C9.2 | 08:22 | 08:32 | 08:37 | 4207 |
| C2.5 | 03:30 | 03:37 | 03:47 | 4199 |
| C3.4 | 02:49 | 03:01 | 03:12 | 4211 |
| C2.3 | 00:22 | 00:30 | 00:36 | 4211 |