Solar flares on April 28, 2013
The most powerful solar flare in 24 hours
C4.4 (normal) flare - April 28 at 9:17 PM
Solar activity index
Value as of the end of the day on April 28, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 27, 2013 to April 28, 2013
Time zone — UTC+01 (London) — summer time
List of solar flares for April 28, 2013
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 22:32 | 22:40 | 22:43 | 1731 |
| C1.5 | 21:59 | 22:03 | 22:07 | 1731 |
| C4.4 | 21:10 | 21:17 | 21:26 | 1733 |
| C3.6 | 19:00 | 19:04 | 19:06 | 1731 |
| C1.8 | 17:58 | 18:02 | 18:04 | 1731 |
| C3.7 | 16:52 | 16:55 | 16:58 | 1731 |
| C1.8 | 16:38 | 16:44 | 16:49 | 1731 |
| C1.9 | 15:53 | 15:56 | 15:59 | 1731 |
| C1.1 | 15:35 | 15:38 | 15:41 | 1731 |
| C2.1 | 07:07 | 07:13 | 07:17 | 1731 |