Solar flares on February 28, 2011
The most powerful solar flare in 24 hours
M1.1 (strong) flare - February 28 at 5:52 AM
Solar activity index
Value as of the end of the day on February 28, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 27, 2011 to February 28, 2011
Time zone — UTC-07 (Cheyenne)
List of solar flares for February 28, 2011
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.0 | 19:30 | 21:13 | 21:40 | 1164 |
| C1.6 | 16:11 | 17:05 | 17:27 | — |
| C1.7 | 14:15 | 14:31 | 14:46 | 1164 |
| C1.0 | 08:44 | 08:52 | 08:59 | 1164 |
| M1.1 | 05:38 | 05:52 | 06:03 | 1164 |
| C1.2 | 05:02 | 05:07 | 05:18 | 1164 |
| C1.5 | 02:38 | 02:52 | 03:03 | 1164 |
| C2.4 | 00:34 | 00:38 | 00:40 | 1164 |
| C2.0 | 00:01 | 00:10 | 00:16 | 1164 |