Solar flares on April 13, 2011
The most powerful solar flare in 24 hours
C2.5 (normal) flare - April 13 at 10:43 AM
Solar activity index
Value as of the end of the day on April 13, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 12, 2011 to April 13, 2011
Time zone — UTC-03 (Moncton) — summer time
List of solar flares for April 13, 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 |
|---|---|---|---|---|
| C2.0 | 23:49 | 23:58 | 00:23 | 1193 |
| C1.4 | 22:31 | 22:35 | 22:38 | 1193 |
| C1.5 | 21:41 | 21:48 | 21:57 | 1190 |
| C1.5 | 16:04 | 16:11 | 16:15 | — |
| C1.1 | 13:02 | 13:07 | 13:11 | 1190 |
| C2.5 | 10:12 | 10:43 | 10:49 | — |
| C1.4 | 07:37 | 07:41 | 07:45 | 1185 |
| C1.0 | 05:29 | 05:32 | 05:36 | 1193 |
| C1.2 | 04:55 | 04:59 | 05:03 | 1191 |
| C2.2 | 03:25 | 03:28 | 03:32 | — |
| C1.9 | 00:21 | 00:30 | 00:36 | 1191 |