Solar flares on April 4, 2001
The most powerful solar flare in 24 hours
M2.0 (strong) flare - April 4 at 7:22 PM
Solar activity index
Value as of the end of the day on April 4, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 3, 2001 to April 4, 2001
Time zone — UTC+07 (Barnaul)
List of solar flares for April 4, 2001
The total number of solar flares of class C and higher — 12 flares
C class — 8 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M2.0 | 19:12 | 19:22 | 19:30 | — |
| M1.1 | 18:52 | 18:59 | 19:03 | 9401 |
| M1.6 | 16:41 | 17:27 | 18:11 | 9415 |
| C3.2 | 14:50 | 14:54 | 14:57 | — |
| C8.7 | 13:37 | 13:42 | 13:47 | 9393 |
| C5.6 | 12:05 | 12:33 | 13:17 | 9415 |
| C6.4 | 10:45 | 10:49 | 10:53 | — |
| C3.2 | 10:27 | 10:30 | 10:33 | — |
| M1.1 | 06:17 | 06:51 | 07:04 | — |
| C5.5 | 01:46 | 01:52 | 02:00 | — |
| C8.5 | 00:36 | 00:42 | 00:50 | 9401 |
| C7.1 | 23:47 | 00:03 | 00:13 | — |