Solar flares on September 15, 2011
The most powerful solar flare in 24 hours
C3.0 (normal) flare - September 15 at 12:26 PM
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-04 (Augusta) — summer time
List of solar flares for September 15, 2011
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 18:46 | 18:53 | 18:59 | — |
| C2.6 | 17:09 | 17:14 | 17:19 | 1297 |
| C1.3 | 16:32 | 16:38 | 16:43 | — |
| C1.0 | 14:27 | 14:32 | 14:38 | 1296 |
| C3.0 | 12:18 | 12:26 | 12:41 | — |
| C1.4 | 06:55 | 06:59 | 07:02 | — |
| C1.3 | 00:28 | 00:32 | 00:35 | — |