Solar flares on October 21, 2014
The most powerful solar flare in 24 hours
M8.7 (strong) flare - October 21 at 8:59 PM
Solar activity index
Value as of the end of the day on October 21, 2014
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 20, 2014 to October 21, 2014
Time zone — UTC-05 (Winnipeg) — summer time
List of solar flares for October 21, 2014
The total number of solar flares of class C and higher — 10 flares
C class — 8 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M8.7 | 20:16 | 20:59 | 21:28 | 2192 |
| C3.4 | 16:54 | 17:04 | 17:14 | 2192 |
| C6.5 | 15:11 | 15:20 | 15:25 | 2192 |
| C4.0 | 14:03 | 14:10 | 14:16 | 2192 |
| M1.2 | 08:35 | 08:38 | 08:40 | — |
| C4.4 | 07:25 | 07:28 | 07:30 | — |
| C6.3 | 05:46 | 05:58 | 06:13 | — |
| C3.1 | 03:08 | 03:10 | 03:12 | 2192 |
| C2.9 | 01:53 | 01:57 | 02:02 | 2192 |
| C5.7 | 01:05 | 01:14 | 01:21 | 2192 |