Solar flares on July 31, 2011
The most powerful solar flare in 24 hours
C1.9 (normal) flare - July 31 at 8:47 PM
Solar activity index
Value as of the end of the day on July 31, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 30, 2011 to July 31, 2011
Time zone — UTC+00
List of solar flares for July 31, 2011
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 23:36 | 23:40 | 23:44 | 1263 |
| C1.5 | 22:46 | 22:54 | 22:57 | — |
| C1.8 | 21:48 | 22:04 | 22:11 | 1261 |
| C1.9 | 20:41 | 20:47 | 20:50 | 1263 |
| C1.7 | 19:01 | 19:09 | 19:17 | 1265 |
| C1.4 | 18:43 | 18:50 | 18:52 | 1263 |
| C1.1 | 17:57 | 18:01 | 18:03 | 1263 |