Solar flares on September 21, 2010
The most powerful solar flare in 24 hours
C1.4 (normal) flare - September 21 at 9:53 AM
Solar activity index
Value as of the end of the day on September 21, 2010
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 20, 2010 to September 21, 2010
Time zone — UTC+02 (Brussels) — summer time
List of solar flares for September 21, 2010
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.4 | 09:38 | 09:53 | 10:09 | 1109 |
| C1.0 | 00:19 | 00:25 | 00:27 | 1109 |