Solar flares on December 15, 2001
The most powerful solar flare in 24 hours
M1.5 (strong) flare - December 15 at 9:24 PM
Solar activity index
Value as of the end of the day on December 15, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 14, 2001 to December 15, 2001
Time zone — UTC-04 (Saint john)
List of solar flares for December 15, 2001
The total number of solar flares of class C and higher — 10 flares
C class — 8 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.0 | 23:09 | 23:28 | 23:48 | 9733 |
| M1.5 | 21:14 | 21:24 | 21:29 | 9733 |
| C3.5 | 19:11 | 19:15 | 19:18 | 9733 |
| C3.3 | 17:24 | 17:29 | 17:32 | — |
| C3.3 | 15:50 | 15:53 | 15:58 | — |
| C2.9 | 14:21 | 14:24 | 14:26 | 9733 |
| C4.3 | 13:28 | 13:33 | 13:35 | 9733 |
| C5.0 | 12:56 | 12:59 | 13:01 | — |
| C9.4 | 08:39 | 08:53 | 09:03 | — |
| C4.9 | 06:05 | 06:10 | 06:19 | 9733 |