Solar flares on December 4, 2001
The most powerful solar flare in 24 hours
M1.3 (strong) flare - December 4 at 12:46 AM
Solar activity index
Value as of the end of the day on December 4, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 3, 2001 to December 4, 2001
Time zone — UTC-05 (Dover)
List of solar flares for December 4, 2001
The total number of solar flares of class C and higher — 4 flares
C class — 3 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.5 | 23:00 | 23:03 | 23:05 | 9716 |
| C4.3 | 03:55 | 04:00 | 04:05 | 9718 |
| C3.3 | 02:27 | 02:31 | 02:37 | 9718 |
| M1.3 | 00:37 | 00:46 | 00:58 | — |