Solar flares on October 23, 2003
The most powerful solar flare in 24 hours
X5.4 (very strong) flare - October 23 at 12:35 AM
Solar activity index
Value as of the end of the day on October 23, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 22, 2003 to October 23, 2003
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for October 23, 2003
The total number of solar flares of class C and higher — 6 flares
C class — 1 | M class — 3 | X class — 2
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.5 | 22:03 | 22:07 | 22:12 | — |
| M4.2 | 21:04 | 21:10 | 21:16 | 486 |
| M7.6 | 18:27 | 18:54 | 19:14 | 486 |
| X1.1 | 11:50 | 12:04 | 12:14 | 486 |
| M2.7 | 02:49 | 02:53 | 02:55 | 484 |
| X5.4 | 00:19 | 00:35 | 00:49 | 486 |