Solar flares on October 28, 2003
The most powerful solar flare in 24 hours
X17.2 (very strong) flare - October 28 at 3:10 AM
Solar activity index
Value as of the end of the day on October 28, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 27, 2003 to October 28, 2003
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for October 28, 2003
The total number of solar flares of class C and higher — 5 flares
C class — 2 | M class — 2 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M3.5 | 20:08 | 21:11 | 21:54 | 486 |
| C6.2 | 20:10 | 20:17 | 20:25 | — |
| M1.1 | 16:26 | 17:51 | 18:08 | 486 |
| X17.2 | 01:51 | 03:10 | 03:24 | 486 |
| C8.7 | 00:35 | 00:39 | 00:44 | 488 |