Solar flares on October 4, 2003
The most powerful solar flare in 24 hours
M1.0 (strong) flare - October 4 at 7:47 AM
Solar activity index
Value as of the end of the day on October 4, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 3, 2003 to October 4, 2003
Time zone — UTC-08 (Anchorage) — summer time
List of solar flares for October 4, 2003
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 18:56 | 19:12 | 19:17 | 473 |
| C1.5 | 17:26 | 17:39 | 17:53 | 471 |
| C1.0 | 16:30 | 16:37 | 16:43 | 471 |
| C1.7 | 11:08 | 11:17 | 11:22 | — |
| C1.3 | 10:22 | 10:26 | 10:29 | 471 |
| C1.6 | 09:53 | 09:57 | 10:03 | 471 |
| M1.0 | 07:42 | 07:47 | 07:49 | 471 |
| C1.7 | 07:15 | 07:23 | 07:30 | 471 |
| C2.5 | 05:09 | 05:17 | 05:41 | — |