Solar flares on April 4, 2001
The most powerful solar flare in 24 hours
M3.1 (strong) flare - April 4 at 6:20 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-08 (Dillingham) — summer time
List of solar flares for April 4, 2001
The total number of solar flares of class C and higher — 6 flares
C class — 1 | M class — 5 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.1 | 21:10 | 21:18 | 21:27 | — |
| M3.1 | 18:00 | 18:20 | 19:11 | 9418 |
| C4.4 | 17:29 | 17:34 | 17:43 | — |
| M2.0 | 04:12 | 04:22 | 04:30 | — |
| M1.1 | 03:52 | 03:59 | 04:03 | 9401 |
| M1.6 | 01:41 | 02:27 | 03:11 | 9415 |