Solar flares on September 25, 2011
The most powerful solar flare in 24 hours
M7.4 (strong) flare - September 25 at 4:50 AM
Solar activity index
Value as of the end of the day on September 25, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 24, 2011 to September 25, 2011
Time zone — UTC+00
List of solar flares for September 25, 2011
The total number of solar flares of class C and higher — 10 flares
C class — 4 | M class — 6 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.6 | 22:29 | 22:32 | 22:36 | 1303 |
| C8.6 | 22:14 | 22:19 | 22:29 | — |
| M2.2 | 16:51 | 16:58 | 17:09 | 1302 |
| M3.7 | 15:26 | 15:33 | 15:38 | 1302 |
| C5.7 | 11:26 | 11:29 | 11:34 | 1302 |
| M1.5 | 09:25 | 09:35 | 09:53 | 1303 |
| M3.1 | 08:46 | 08:49 | 08:52 | 1302 |
| M7.4 | 04:31 | 04:50 | 05:05 | 1302 |
| C7.9 | 03:27 | 03:32 | 03:38 | 1302 |
| M4.4 | 02:27 | 02:33 | 02:37 | 1302 |