Solar flares on April 28, 2013
The most powerful solar flare in 24 hours
C4.4 (normal) flare - April 28 at 5:47 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-02:30 (Saint john's) — summer time
List of solar flares for April 28, 2013
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 |
|---|---|---|---|---|
| C1.2 | 23:25 | 23:31 | 23:37 | — |
| C1.7 | 21:25 | 21:35 | 21:43 | 1731 |
| C3.1 | 20:57 | 21:01 | 21:03 | 1731 |
| C1.3 | 19:02 | 19:10 | 19:13 | 1731 |
| C1.5 | 18:29 | 18:33 | 18:37 | 1731 |
| C4.4 | 17:40 | 17:47 | 17:56 | 1733 |
| C3.6 | 15:30 | 15:34 | 15:36 | 1731 |
| C1.8 | 14:28 | 14:32 | 14:34 | 1731 |
| C3.7 | 13:22 | 13:25 | 13:28 | 1731 |
| C1.8 | 13:08 | 13:14 | 13:19 | 1731 |
| C1.9 | 12:23 | 12:26 | 12:29 | 1731 |
| C1.1 | 12:05 | 12:08 | 12:11 | 1731 |
| C2.1 | 03:37 | 03:43 | 03:47 | 1731 |