Solar flares on April 28, 2011
The most powerful solar flare in 24 hours
C3.8 (normal) flare - April 28 at 8:26 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-04 (Moosonee) — 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 |
|---|---|---|---|---|
| C3.8 | 20:17 | 20:26 | 20:33 | 1203 |
| C1.1 | 08:39 | 08:47 | 08:51 | — |
| C2.4 | 07:51 | 07:58 | 08:03 | 1199 |