Solar flares on April 21, 2012
The most powerful solar flare in 24 hours
C2.4 (normal) flare - April 21 at 4:32 AM
Solar activity index
Value as of the end of the day on April 21, 2012
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 20, 2012 to April 21, 2012
Time zone — UTC+03 (Murmansk)
List of solar flares for April 21, 2012
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.8 | 23:10 | 23:14 | 23:19 | 1459 |
| C1.0 | 14:00 | 14:14 | 14:24 | 1462 |
| C2.4 | 04:27 | 04:32 | 04:34 | 1460 |
| C1.4 | 01:25 | 01:35 | 01:44 | 1465 |