Solar flares on February 20, 2011
The most powerful solar flare in 24 hours
C4.6 (normal) flare - February 20 at 7:24 PM
Solar activity index
Value as of the end of the day on February 20, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 19, 2011 to February 20, 2011
Time zone — UTC-07 (Santa Fe)
List of solar flares for February 20, 2011
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.3 | 23:02 | 23:10 | 23:14 | — |
| C4.1 | 22:00 | 22:06 | 22:08 | 1158 |
| C1.5 | 21:04 | 21:10 | 21:13 | 1158 |
| C1.8 | 20:10 | 20:15 | 20:18 | 1158 |
| C4.6 | 19:13 | 19:24 | 19:27 | 1158 |