Solar flares on December 31, 2003
The most powerful solar flare in 24 hours
M1.0 (strong) flare - December 31 at 9:24 AM
Solar activity index
Value as of the end of the day on December 31, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 30, 2003 to December 31, 2003
Time zone — UTC-09 (Anchorage)
List of solar flares for December 31, 2003
The total number of solar flares of class C and higher — 10 flares
C class — 9 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C8.0 | 21:04 | 21:54 | 22:00 | — |
| C2.5 | 20:35 | 20:40 | 20:47 | 534 |
| C6.4 | 18:16 | 18:21 | 18:23 | 528 |
| C3.7 | 16:41 | 16:46 | 16:49 | — |
| C4.0 | 16:22 | 16:33 | 16:41 | — |
| C8.3 | 12:31 | 13:17 | 14:27 | — |
| C1.0 | 11:10 | 11:19 | 11:29 | — |
| M1.0 | 09:21 | 09:24 | 09:26 | 528 |
| C2.2 | 08:59 | 09:08 | 09:16 | — |
| C2.3 | 08:25 | 08:33 | 08:36 | — |