Solar flares on April 15, 2011
The most powerful solar flare in 24 hours
M1.3 (strong) flare - April 15 at 1:12 PM
Solar activity index
Value as of the end of the day on April 15, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 14, 2011 to April 15, 2011
Time zone — UTC-04 (Barrie) — summer time
List of solar flares for April 15, 2011
The total number of solar flares of class C and higher — 12 flares
C class — 11 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 22:31 | 23:12 | 23:30 | 1190 |
| C1.4 | 21:54 | 22:01 | 22:07 | 1193 |
| C5.2 | 20:34 | 20:57 | 21:08 | 1190 |
| C1.8 | 18:33 | 18:36 | 18:39 | 1190 |
| M1.3 | 13:02 | 13:12 | 13:28 | 1190 |
| C1.6 | 12:08 | 12:14 | 12:19 | 1190 |
| C2.0 | 10:42 | 10:49 | 10:57 | 1190 |
| C2.8 | 09:47 | 09:50 | 09:54 | 1190 |
| C1.9 | 07:29 | 07:36 | 07:48 | 1193 |
| C1.6 | 05:10 | 05:36 | 05:49 | 1190 |
| C1.1 | 04:09 | 04:11 | 04:12 | — |
| C1.3 | 00:37 | 00:41 | 00:44 | 1190 |