Solar flares on September 30, 2011
The most powerful solar flare in 24 hours
M1.0 (strong) flare - September 30 at 1:06 PM
Solar activity index
Value as of the end of the day on September 30, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 29, 2011 to September 30, 2011
Time zone — UTC-06 (El Paso) — summer time
List of solar flares for September 30, 2011
The total number of solar flares of class C and higher — 5 flares
C class — 4 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.1 | 22:44 | 22:50 | 22:53 | 1302 |
| C1.3 | 21:50 | 21:56 | 22:04 | 1305 |
| C1.1 | 14:37 | 14:42 | 14:48 | 1302 |
| M1.0 | 12:55 | 13:06 | 13:15 | 1305 |
| C3.4 | 12:42 | 12:47 | 12:53 | 1307 |