Solar flares on January 21, 2010
The most powerful solar flare in 24 hours
C4.9 (normal) flare - January 21 at 1:20 AM
Solar activity index
Value as of the end of the day on January 21, 2010
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 20, 2010 to January 21, 2010
Time zone — UTC+00
List of solar flares for January 21, 2010
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 10:42 | 10:49 | 10:53 | 1041 |
| C2.3 | 03:49 | 03:54 | 03:58 | 1041 |
| C4.9 | 01:16 | 01:20 | 01:24 | 1041 |