Solar flares on October 4, 2002
The most powerful solar flare in 24 hours
M4.0 (strong) flare - October 4 at 10:38 AM
Solar activity index
Value as of the end of the day on October 4, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 3, 2002 to October 4, 2002
Time zone — UTC+05 (Astana)
List of solar flares for October 4, 2002
The total number of solar flares of class C and higher — 10 flares
C class — 7 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.2 | 17:00 | 17:03 | 17:07 | — |
| M3.5 | 15:54 | 16:05 | 16:09 | 137 |
| C6.2 | 15:19 | 15:31 | 15:46 | 139 |
| C8.0 | 13:56 | 14:11 | 14:18 | 137 |
| C2.0 | 13:42 | 13:46 | 13:48 | 139 |
| M4.0 | 10:34 | 10:38 | 10:41 | 137 |
| C5.3 | 09:57 | 10:01 | 10:03 | — |
| C4.1 | 09:17 | 09:31 | 09:55 | 137 |
| C7.0 | 06:51 | 06:55 | 06:57 | — |
| M1.0 | 05:39 | 05:43 | 05:53 | 137 |