Solar flares on September 12, 2004
The most powerful solar flare in 24 hours
M4.8 (strong) flare - September 12 at 12:56 AM
Solar activity index
Value as of the end of the day on September 12, 2004
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 11, 2004 to September 12, 2004
Time zone — UTC+00
List of solar flares for September 12, 2004
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 |
|---|---|---|---|---|
| C1.1 | 22:22 | 22:27 | 22:30 | 667 |
| C2.0 | 18:28 | 18:34 | 18:42 | 669 |
| M3.2 | 01:36 | 01:39 | 01:41 | 667 |
| M4.8 | 00:04 | 00:56 | 01:33 | 672 |