Solar flares on February 13, 2011
The most powerful solar flare in 24 hours
M6.6 (strong) flare - February 13 at 5:38 PM
Solar activity index
Value as of the end of the day on February 13, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 12, 2011 to February 13, 2011
Time zone — UTC+00
List of solar flares for February 13, 2011
The total number of solar flares of class C and higher — 5 flares
C class — 4 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 21:17 | 21:20 | 21:22 | — |
| M6.6 | 17:28 | 17:38 | 17:47 | 1158 |
| C4.7 | 13:44 | 13:56 | 14:11 | 1158 |
| C1.1 | 12:29 | 12:36 | 12:46 | 1158 |
| C1.4 | 07:25 | 07:29 | 07:32 | 1160 |