Solar flares on February 13, 2011
The most powerful solar flare in 24 hours
M6.6 (strong) flare - February 13 at 7:38 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+02 (Riga)
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 | 23:17 | 23:20 | 23:22 | — |
| M6.6 | 19:28 | 19:38 | 19:47 | 1158 |
| C4.7 | 15:44 | 15:56 | 16:11 | 1158 |
| C1.1 | 14:29 | 14:36 | 14:46 | 1158 |
| C1.4 | 09:25 | 09:29 | 09:32 | 1160 |