Solar flares on January 21, 2011
The most powerful solar flare in 24 hours
C3.3 (normal) flare - January 21 at 12:17 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-04 (Moncton)
List of solar flares for January 21, 2011
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 16:14 | 16:31 | 16:39 | 1149 |
| C1.1 | 14:57 | 15:10 | 15:30 | — |
| C2.2 | 12:38 | 13:12 | 13:17 | 1149 |
| C1.1 | 11:17 | 11:21 | 11:25 | 1147 |
| C1.4 | 10:24 | 10:38 | 10:49 | 1149 |
| C1.0 | 08:05 | 08:15 | 08:20 | 1149 |
| C3.3 | 00:12 | 00:17 | 00:20 | 1149 |