Solar flares on October 31, 2011
The most powerful solar flare in 24 hours
M1.4 (strong) flare - October 31 at 2:08 PM
Solar activity index
Value as of the end of the day on October 31, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 30, 2011 to October 31, 2011
Time zone — UTC-04 (Ottawa) — summer time
List of solar flares for October 31, 2011
The total number of solar flares of class C and higher — 6 flares
C class — 4 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.7 | 20:22 | 20:28 | 20:33 | — |
| C5.2 | 19:16 | 19:22 | 19:28 | — |
| M1.4 | 13:21 | 14:08 | 14:50 | — |
| M1.1 | 10:55 | 11:08 | 11:27 | — |
| C1.3 | 03:54 | 03:59 | 04:10 | 1324 |
| C2.7 | 01:14 | 01:21 | 01:25 | 1334 |