Solar flares on December 18, 2001
The most powerful solar flare in 24 hours
C4.8 (normal) flare - December 18 at 10:54 AM
Solar activity index
Value as of the end of the day on December 18, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 17, 2001 to December 18, 2001
Time zone — UTC+03 (Stavropol)
List of solar flares for December 18, 2001
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.7 | 22:59 | 23:03 | 23:07 | 9742 |
| C4.8 | 10:49 | 10:54 | 11:07 | 9733 |
| C1.6 | 10:32 | 10:36 | 10:42 | — |
| C3.0 | 07:39 | 07:44 | 07:49 | 9733 |