Solar flares on April 28, 2011
The most powerful solar flare in 24 hours
C2.4 (normal) flare - April 28 at 12:58 PM
Solar activity index
Value as of the end of the day on April 28, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 27, 2011 to April 28, 2011
Time zone — UTC+01 (London) — summer time
List of solar flares for April 28, 2011
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 13:39 | 13:47 | 13:51 | — |
| C2.4 | 12:51 | 12:58 | 13:03 | 1199 |
| C1.0 | 03:32 | 03:40 | 03:46 | 1196 |