Solar flares on January 21, 2011
The most powerful solar flare in 24 hours
C2.2 (normal) flare - January 21 at 11:12 AM
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-06 (Austin)
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 | 14:14 | 14:31 | 14:39 | 1149 |
| C1.1 | 12:57 | 13:10 | 13:30 | — |
| C2.2 | 10:38 | 11:12 | 11:17 | 1149 |
| C1.1 | 09:17 | 09:21 | 09:25 | 1147 |
| C1.4 | 08:24 | 08:38 | 08:49 | 1149 |
| C1.0 | 06:05 | 06:15 | 06:20 | 1149 |