Solar flares on April 13, 2011
The most powerful solar flare in 24 hours
C2.5 (normal) flare - April 13 at 1:43 PM
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+00
List of solar flares for April 13, 2011
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 19:04 | 19:11 | 19:15 | — |
| C1.1 | 16:02 | 16:07 | 16:11 | 1190 |
| C2.5 | 13:12 | 13:43 | 13:49 | — |
| C1.4 | 10:37 | 10:41 | 10:45 | 1185 |
| C1.0 | 08:29 | 08:32 | 08:36 | 1193 |
| C1.2 | 07:55 | 07:59 | 08:03 | 1191 |
| C2.2 | 06:25 | 06:28 | 06:32 | — |
| C1.9 | 03:21 | 03:30 | 03:36 | 1191 |