Solar flares on September 15, 2011
The most powerful solar flare in 24 hours
C4.6 (normal) flare - September 15 at 12:29 AM
Solar activity index
Value as of the end of the day on September 15, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 14, 2011 to September 15, 2011
Time zone — UTC+00
List of solar flares for September 15, 2011
The total number of solar flares of class C and higher — 11 flares
C class — 11 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 22:46 | 22:53 | 22:59 | — |
| C2.6 | 21:09 | 21:14 | 21:19 | 1297 |
| C1.3 | 20:32 | 20:38 | 20:43 | — |
| C1.0 | 18:27 | 18:32 | 18:38 | 1296 |
| C3.0 | 16:18 | 16:26 | 16:41 | — |
| C1.4 | 10:55 | 10:59 | 11:02 | — |
| C1.3 | 04:28 | 04:32 | 04:35 | — |
| C1.9 | 03:04 | 03:08 | 03:11 | — |
| C2.3 | 02:41 | 02:46 | 02:50 | 1297 |
| C1.5 | 01:59 | 02:08 | 02:20 | — |
| C4.6 | 00:24 | 00:29 | 00:32 | 1297 |