Solar flares on February 21, 2013
The most powerful solar flare in 24 hours
C2.5 (normal) flare - February 21 at 8:05 AM
Solar activity index
Value as of the end of the day on February 21, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 20, 2013 to February 21, 2013
Time zone — UTC+03 (Moscow)
List of solar flares for February 21, 2013
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 |
|---|---|---|---|---|
| C2.5 | 07:56 | 08:05 | 08:17 | 1678 |
| C2.0 | 07:01 | 07:09 | 07:16 | 1678 |
| C1.9 | 06:07 | 06:10 | 06:12 | 1678 |
| C1.7 | 00:50 | 00:58 | 01:12 | 1678 |