Solar flares on September 4, 2011
The most powerful solar flare in 24 hours
M3.2 (strong) flare - September 4 at 2:45 PM
Solar activity index
Value as of the end of the day on September 4, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 3, 2011 to September 4, 2011
Time zone — UTC+03 (Riga)
List of solar flares for September 4, 2011
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.4 | 22:40 | 22:47 | 22:59 | — |
| C5.8 | 18:21 | 18:34 | 18:53 | 1286 |
| M3.2 | 14:21 | 14:45 | 14:50 | 1286 |
| C4.0 | 08:35 | 09:18 | 09:28 | 1286 |
| C9.0 | 07:36 | 07:53 | 08:03 | 1286 |
| C8.3 | 04:01 | 04:07 | 04:13 | 1286 |
| C1.7 | 02:02 | 02:08 | 02:11 | 1286 |
| C1.6 | 01:08 | 01:12 | 01:14 | 1287 |