Solar flares on February 17, 2011
The most powerful solar flare in 24 hours
C6.1 (normal) flare - February 17 at 1:46 AM
Solar activity index
Value as of the end of the day on February 17, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 16, 2011 to February 17, 2011
Time zone — UTC+00
List of solar flares for February 17, 2011
The total number of solar flares of class C and higher — 13 flares
C class — 13 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 21:30 | 21:35 | 21:40 | 1158 |
| C1.3 | 15:49 | 15:54 | 16:04 | 1158 |
| C2.4 | 12:33 | 12:36 | 12:39 | 1158 |
| C2.2 | 10:38 | 10:44 | 10:49 | — |
| C2.6 | 10:25 | 10:28 | 10:32 | 1158 |
| C1.9 | 09:24 | 09:30 | 09:35 | 1158 |
| C1.2 | 08:09 | 08:13 | 08:18 | 1158 |
| C1.2 | 06:44 | 06:47 | 06:51 | 1158 |
| C1.0 | 05:33 | 05:36 | 05:40 | 1158 |
| C1.5 | 04:09 | 04:15 | 04:22 | 1158 |
| C2.3 | 02:46 | 03:08 | 03:21 | 1158 |
| C6.1 | 01:41 | 01:46 | 01:50 | 1158 |
| C2.8 | 23:02 | 00:25 | 01:07 | 1158 |