Solar flares on February 28, 2011
The most powerful solar flare in 24 hours
M1.1 (strong) flare - February 28 at 12:52 PM
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+00
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 |
|---|---|---|---|---|
| C1.7 | 21:15 | 21:31 | 21:46 | 1164 |
| C1.0 | 15:44 | 15:52 | 15:59 | 1164 |
| M1.1 | 12:38 | 12:52 | 13:03 | 1164 |
| C1.2 | 12:02 | 12:07 | 12:18 | 1164 |
| C1.5 | 09:38 | 09:52 | 10:03 | 1164 |
| C2.4 | 07:34 | 07:38 | 07:40 | 1164 |
| C2.0 | 07:01 | 07:10 | 07:16 | 1164 |
| C1.1 | 06:30 | 06:38 | 06:49 | 1164 |
| C1.7 | 05:24 | 05:33 | 05:40 | 1164 |