Solar flares on September 24, 2011
The most powerful solar flare in 24 hours
X1.9 (very strong) flare - September 24 at 10:40 AM
Solar activity index
Value as of the end of the day on September 24, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 23, 2011 to September 24, 2011
Time zone — UTC+01 (London) — summer time
List of solar flares for September 24, 2011
The total number of solar flares of class C and higher — 13 flares
C class — 4 | M class — 8 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.2 | 22:23 | 22:27 | 22:32 | 1303 |
| M5.8 | 21:29 | 21:36 | 21:42 | 1302 |
| M3.0 | 20:09 | 20:21 | 20:41 | 1302 |
| M2.8 | 18:59 | 19:15 | 19:24 | 1302 |
| M3.1 | 18:19 | 18:25 | 18:31 | 1302 |
| M1.7 | 17:36 | 17:59 | 18:15 | 1295 |
| M7.1 | 13:33 | 14:20 | 15:10 | 1302 |
| C2.7 | 12:25 | 12:31 | 12:37 | 1302 |
| X1.9 | 10:21 | 10:40 | 10:48 | 1302 |
| C2.2 | 09:38 | 09:43 | 09:55 | 1295 |
| C3.1 | 08:20 | 08:23 | 08:27 | — |
| C5.9 | 08:01 | 08:04 | 08:08 | 1295 |
| M1.9 | 00:48 | 00:56 | 01:04 | 1302 |