Solar flares on December 11, 2001
The most powerful solar flare in 24 hours
X2.8 (very strong) flare - December 11 at 11:08 AM
Solar activity index
Value as of the end of the day on December 11, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 10, 2001 to December 11, 2001
Time zone — UTC+03 (Pskov)
List of solar flares for December 11, 2001
The total number of solar flares of class C and higher — 7 flares
C class — 5 | M class — 1 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.4 | 21:54 | 22:01 | 22:08 | — |
| M1.3 | 17:42 | 17:51 | 17:57 | 9727 |
| C4.6 | 13:06 | 13:19 | 13:29 | — |
| X2.8 | 10:58 | 11:08 | 11:14 | 9733 |
| C2.7 | 07:12 | 07:16 | 07:21 | — |
| C3.44 | 06:30 | 06:43 | 06:47 | — |
| C7.0 | 01:39 | 01:48 | 03:00 | 9733 |