Solar flares on September 25, 2011
The most powerful solar flare in 24 hours
M7.4 (strong) flare - September 25 at 5:50 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+01 (London) — summer time
List of solar flares for September 25, 2011
The total number of solar flares of class C and higher — 11 flares
C class — 4 | M class — 7 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.6 | 23:29 | 23:32 | 23:36 | 1303 |
| C8.6 | 23:14 | 23:19 | 23:29 | — |
| M2.2 | 17:51 | 17:58 | 18:09 | 1302 |
| M3.7 | 16:26 | 16:33 | 16:38 | 1302 |
| C5.7 | 12:26 | 12:29 | 12:34 | 1302 |
| M1.5 | 10:25 | 10:35 | 10:53 | 1303 |
| M3.1 | 09:46 | 09:49 | 09:52 | 1302 |
| M7.4 | 05:31 | 05:50 | 06:05 | 1302 |
| C7.9 | 04:27 | 04:32 | 04:38 | 1302 |
| M4.4 | 03:27 | 03:33 | 03:37 | 1302 |
| M1.0 | 00:45 | 00:58 | 01:09 | 1303 |