Solar flares on January 21, 2011
The most powerful solar flare in 24 hours
C2.2 (normal) flare - January 21 at 12:12 PM
Solar activity index
Value as of the end of the day on January 21, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from January 20, 2011 to January 21, 2011
Time zone — UTC-05 (Columbus)
List of solar flares for January 21, 2011
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 |
|---|---|---|---|---|
| C1.3 | 15:14 | 15:31 | 15:39 | 1149 |
| C1.1 | 13:57 | 14:10 | 14:30 | — |
| C2.2 | 11:38 | 12:12 | 12:17 | 1149 |
| C1.1 | 10:17 | 10:21 | 10:25 | 1147 |
| C1.4 | 09:24 | 09:38 | 09:49 | 1149 |
| C1.0 | 07:05 | 07:15 | 07:20 | 1149 |