Solar flares on October 1, 2011
The most powerful solar flare in 24 hours
M3.9 (strong) flare - October 1 at 7:50 PM
Solar activity index
Value as of the end of the day on October 1, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 30, 2011 to October 1, 2011
Time zone — UTC-05 (Arviat) — summer time
List of solar flares for October 1, 2011
The total number of solar flares of class C and higher — 4 flares
C class — 2 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.5 | 22:10 | 22:49 | 23:13 | 1302 |
| M3.9 | 19:37 | 19:50 | 19:59 | 1305 |
| C1.0 | 07:35 | 07:39 | 07:42 | 1302 |
| M1.2 | 03:56 | 04:59 | 05:17 | 1305 |