Solar flares on September 30, 2012
The most powerful solar flare in 24 hours
C9.9 (normal) flare - September 30 at 6:39 PM
Solar activity index
Value as of the end of the day on September 30, 2012
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 29, 2012 to September 30, 2012
Time zone — UTC-05 (Pierre) — summer time
List of solar flares for September 30, 2012
The total number of solar flares of class C and higher — 13 flares
C class — 13 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.6 | 22:48 | 22:51 | 22:54 | 1575 |
| C4.8 | 20:42 | 20:47 | 20:50 | 1575 |
| C1.7 | 20:29 | 20:35 | 20:37 | 1575 |
| C9.9 | 18:17 | 18:39 | 18:44 | 1575 |
| C1.9 | 17:39 | 17:43 | 17:47 | — |
| C2.8 | 17:01 | 17:06 | 17:09 | — |
| C7.1 | 16:16 | 16:20 | 16:23 | — |
| C1.6 | 15:57 | 16:01 | 16:04 | — |
| C2.3 | 15:04 | 15:08 | 15:10 | — |
| C2.5 | 10:01 | 10:10 | 10:14 | 1575 |
| C2.3 | 09:21 | 09:26 | 09:33 | 1575 |
| C1.0 | 07:29 | 07:33 | 07:36 | 1584 |
| C2.9 | 01:34 | 01:45 | 02:10 | 1577 |