Solar flares on April 4, 2002
The most powerful solar flare in 24 hours
M6.1 (strong) flare - April 4 at 12:32 PM
Solar activity index
Value as of the end of the day on April 4, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 3, 2002 to April 4, 2002
Time zone — UTC-03 (Halifax) — summer time
List of solar flares for April 4, 2002
The total number of solar flares of class C and higher — 9 flares
C class — 7 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.0 | 20:02 | 20:06 | 20:08 | — |
| C2.0 | 18:53 | 18:58 | 19:03 | 9893 |
| M6.1 | 12:24 | 12:32 | 12:38 | — |
| C3.0 | 11:33 | 11:36 | 11:40 | 9885 |
| C2.9 | 11:13 | 11:18 | 11:22 | — |
| M1.4 | 07:41 | 07:48 | 07:54 | — |
| C3.0 | 03:51 | 03:54 | 03:56 | 9888 |
| C9.8 | 01:23 | 01:41 | 01:57 | 9893 |
| C2.8 | 00:33 | 00:36 | 00:39 | 9893 |