Solar flares on February 15, 2011
The most powerful solar flare in 24 hours
X2.2 (very strong) flare - February 15 at 1:56 AM
Solar activity index
Value as of the end of the day on February 15, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 14, 2011 to February 15, 2011
Time zone — UTC+00 (London)
List of solar flares for February 15, 2011
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 0 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 22:49 | 22:54 | 22:56 | 1158 |
| C6.6 | 19:30 | 20:33 | 20:53 | 1158 |
| C1.7 | 18:07 | 18:44 | 18:57 | 1158 |
| C4.8 | 14:32 | 14:44 | 14:51 | 1158 |
| C1.0 | 10:02 | 10:07 | 10:16 | — |
| C4.8 | 04:27 | 04:32 | 04:37 | — |
| X2.2 | 01:44 | 01:56 | 02:06 | 1158 |
| C2.7 | 00:31 | 00:38 | 00:48 | — |