Solar flares on September 11, 2004
The most powerful solar flare in 24 hours
M4.8 (strong) flare - September 11 at 6:56 PM
Solar activity index
Value as of the end of the day on September 11, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 10, 2004 to September 11, 2004
Time zone — UTC-06 (Lethbridge) — summer time
List of solar flares for September 11, 2004
The total number of solar flares of class C and higher — 3 flares
C class — 1 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M3.2 | 19:36 | 19:39 | 19:41 | 667 |
| M4.8 | 18:04 | 18:56 | 19:33 | 672 |
| C1.1 | 00:29 | 00:34 | 00:39 | 672 |