Solar flares on October 21, 2013
The most powerful solar flare in 24 hours
C2.4 (normal) flare - October 21 at 9:10 PM
Solar activity index
Value as of the end of the day on October 21, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 20, 2013 to October 21, 2013
Time zone — UTC+05 (Tashkent)
List of solar flares for October 21, 2013
The total number of solar flares of class C and higher — 6 flares
C class — 6 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.4 | 20:40 | 21:10 | 21:16 | 1875 |
| C1.1 | 19:33 | 19:44 | 20:36 | 1877 |
| C1.0 | 14:19 | 14:22 | 14:25 | 1877 |
| C1.6 | 13:09 | 13:13 | 13:17 | 1875 |
| C1.7 | 12:06 | 12:14 | 12:18 | — |
| C1.0 | 03:51 | 03:57 | 04:01 | 1875 |