Solar flares on October 4, 2003
The most powerful solar flare in 24 hours
M1.0 (strong) flare - October 4 at 9:17 PM
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+05:30 (Aligarh)
List of solar flares for October 4, 2003
The total number of solar flares of class C and higher — 7 flares
C class — 6 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 23:52 | 23:56 | 23:59 | 471 |
| C1.6 | 23:23 | 23:27 | 23:33 | 471 |
| M1.0 | 21:12 | 21:17 | 21:19 | 471 |
| C1.7 | 20:45 | 20:53 | 21:00 | 471 |
| C2.5 | 18:39 | 18:47 | 19:11 | — |
| C1.7 | 10:24 | 10:31 | 10:37 | — |
| C2.7 | 04:31 | 04:44 | 04:58 | — |