Solar flares on February 28, 2011
The most powerful solar flare in 24 hours
M1.1 (strong) flare - February 28 at 1:52 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+01 (Oslo)
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 | 22:15 | 22:31 | 22:46 | 1164 |
| C1.0 | 16:44 | 16:52 | 16:59 | 1164 |
| M1.1 | 13:38 | 13:52 | 14:03 | 1164 |
| C1.2 | 13:02 | 13:07 | 13:18 | 1164 |
| C1.5 | 10:38 | 10:52 | 11:03 | 1164 |
| C2.4 | 08:34 | 08:38 | 08:40 | 1164 |
| C2.0 | 08:01 | 08:10 | 08:16 | 1164 |
| C1.1 | 07:30 | 07:38 | 07:49 | 1164 |
| C1.7 | 06:24 | 06:33 | 06:40 | 1164 |